Introduction

In biblical myths, the apple is a symbol of the beginning of life. By eating the fruit, Eve became the ancestor of us all. In fairy tales and folk legends, this extraordinary fruit is often mentioned: “Rejuvenating apples...”, “Juvenir apples...”, etc. Why is so much attention paid to this particular fruit? Is it really so useful and necessary for us in life? We tried to answer this question.

Goal and tasks:
Expand the range of knowledge about apples;
To study the effect of the chemical composition of apples on the human body;
Examine the chemical composition of apples for the presence of vitamin C, malic acid, Fe 2+, Fe 3+ ions and iodine ions

Apple breeding

Among fruit plants, the apple tree ranks first in terms of planting area. The homeland of the apple tree is considered to be the Caucasus, Central Asia and China.

Cultivated varieties of apple trees belong to one species - the domestic apple tree.
There are special varieties of ornamental apple trees. They are planted in parks, squares, and streets are landscaped with them not for the sake of fruit, but for decoration. One of the founders of the science of fruit crop selection was the outstanding Russian scientist Ivan Vladimirovich Michurin. He created more than 300 varieties of fruit plants. Its variety, Pepin saffron, decorates our gardens today.

Scientists and breeders are working to create new varieties of apple trees for different climatic zones.

The work of breeders in the Saratov region

Having studied special literature on the selection of apple trees in our region, we learned that the garden should consist of economically profitable and environmentally plastic (with high adaptive potential) varieties: drought-resistant, winter-hardy, resistant to scab and powdery mildew, productive, with fruits High Quality. In 2000–2007 In various horticultural zones of the Middle Volga region, a variety study was carried out on 44 new varieties of apple trees obtained from different crossing options. Most of the varieties studied under these conditions showed high adaptive potential. Rtishchev's firstborn (1995), Khvalynskoye and Paschalnoye (2008) are included in the State Register for the Saratov region. The firstborn of Rtishchev and Sovkhoznoe were recommended for inclusion in the State Register for the Volgograd region.

On this moment in our region the best economic indicators are apple tree varieties: Berkutovskoye, Pervenets Rtishcheva (winter consumption period), from the group of summer varieties on the market: Malt Bagaevsky.

Medicinal properties of apples

Apple is often used as a dietary and medicinal product. They are useful for people with mental work and people leading a sedentary lifestyle.

An apple contains up to 80% water, the remaining 20% ​​is mass. useful substances: potassium, sodium, calcium, magnesium, phosphorus, iron, iodine, as well as vitamins A, B1, B6, PP, C, etc. The phytoncides of these fruits have a detrimental effect on the causative agents of dysentery and influenza A virus. Vitamin C increases the body’s immunity, has bactericidal properties.

It is best to consume fresh fruits in in kind or grated on a coarse grater. Fresh apples cause abundant secretion of gastric juice, so it is useful to eat an apple during lunch for those who are in a hurry and do not chew their food very thoroughly.
Apples normalize the amount of cholesterol in the liver. In this case, it is enough to eat 2-3 apples a day. This effect of apples is explained by the fact that the pectins they contain are favorably combined with other substances with a similar effect: ascorbic acid, fructose, magnesium.
For long-term treatment of atherosclerosis, it is recommended to eat 3-4 apples or drink 1 glass of apple juice daily. Reduce and regulate blood sugar levels by eating 2 apples at night. They also have a beneficial effect on sleep and aid digestion.
Fresh and baked apples are used to improve digestion and metabolism. Raw, boiled or baked apples are consumed on an empty stomach for sluggish digestion, gastrointestinal disorders, especially in children and for long-term, so-called habitual constipation. Applesauce also has a positive effect.
Including 2-3 apples in your daily diet will help prevent colds.
Fresh apples are recommended for headaches.
American dentists suggested using an apple instead of toothpaste after meals, and especially at night, and then rinsing your mouth. Apples eliminate 96.7% of bacteria in the mouth.
Apples facilitate the absorption of calcium salts and are good for the skin.
Apples ripened in the sun contain more vitamins than apples grown in the shade.
Raw, baked and boiled apples are used as a diuretic for edema of both cardiovascular and renal origin.
Apples are recommended to be consumed for diseases of the kidneys, bladder and kidney stones. Apples have the property of removing oxalate urinary stones from the body.

experimental part

An apple is a storehouse of chemicals necessary for humans. To confirm these words, we conducted research work on the detection of chemicals in apples.

First, we got apple juice from different varieties of apples (from my dacha, Antonovka variety, Cortland variety, and a store-bought apple (unknown variety)). Empirically, we want to prove the presence of different varieties apples presence: vitamin C, malic acid, Fe 2+ ions, Fe 3+ and iodine ions.

Proof of malic acid.

Everyone knows that apples can be sour, sweet and sour and sweet. Is it possible to chemically determine which apple will have a more pronounced sweet taste?

Let's take a universal indicator and dip it in apple juice. From experience it is clear that the indicator is painted in a different color; the more intense the color, the more malic acid there is in the apple, i.e. it tastes sour.

The result of the experiment showed:
Garden apple “Antonovka” has an acidic environment, pH is 3
The Cortland apple has a medium pH of 5
Apple “Purchased” has a medium pH of 4
It follows that the content of malic acid is found in the Antonovka apple.

Proof of ascorbic acid (vitamin C)

Ascorbic acid is a famous vitamin C that improves human immunity. To determine ascorbic acid, we first added a little starch paste to apple juice, and then added a solution of iodine drop by drop. At first, the solution did not turn blue because ascorbic acid is easily oxidized by iodine, and as soon as iodine oxidized all the acid, our solution turned blue because starch began to react with iodine.

Ascorbic acid is vitamin C above the vitamin, the only one directly related to protein metabolism. There is a rule. Little ascorbic acid - you need a lot of protein. If there is a lot of vitamin C, you can get by with less protein.
Vitamin C not only improves immunity and performance, but also has a beneficial effect on vascular system.

This is a complex consisting of vitamin C, vitamin P and carotene.

By depriving the body of this three, we shift the exchange in an unfavorable direction towards greater body weight and increased nervousness. This complex also has a beneficial effect on the vascular system and serves as a prophylactic agent.
Vitamins C, P and carotene are most fully represented in vegetables, berries, and fruits (see table).

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100 grams of fruit contains vitamins:

Strawberries: C - 60 mg, P - 150g
- Orange: C - 60 mg, P - 500g
- Apple: C - 30 mg, P - 10–70g
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There is no doubt that strawberries and oranges contain more of this vitamin, but strawberries are present in our diet for a limited time, oranges are a rather expensive product, but apples are a cheap fruit that can and should be eaten all year round.

Evidence of the presence of Fe +2 ions

Iron II and III valence salts can be determined using sodium hydroxide. By adding NaOH to solutions of iron (II) and (III) salts, we obtain different precipitates.
We conducted experiments both with a chemical reagent and with a solution of apple juice.

Experience No. 1

FeSO 4 + 2 NaOH = Fe (OH) 2 + NaSO 4
Fe 2+ + 2OH – = Fe(OH) 2 – White precipitate that quickly turns green in air.

Experience No. 2

FeCl 3 + 3 NaOH = Fe(OH) 3 + 3 NaCl
Fe 3+ + 3OH – = Fe(OH) 3 – brown precipitate

Fe 2+ ions are easily oxidized in air to Fe 3+ ions, so the green precipitate of Fe(OH) 2, after some time, turns into brown – Fe(OH) 3.

Experience No. 3

Apple juice + NaOH – a green precipitate of Fe(OH) 2 appears, this proves the presence of iron ions (2). After 30 minutes, our green precipitate turned brown, i.e. iron turned into iron state (3). Therefore, our advice is to drink the juice immediately after preparing it.

Quantitative content of iron ions in apples.

We cut the apples and left them in the air for two hours. Those apples that darken faster contain more iron ions. In our case, these were apples grown in our dacha.

The presence of iodine in apple seeds

The reagent for iodine is starch. We poured starch paste onto crushed apple seeds, the solution turned blue.
Therefore, we give advice: two apples a day, eaten along with seeds, is enough to provide a daily dose of iodine per day.

Project activity is one of the sources of self-knowledge and self-development of every student. For us it is also to show our creative abilities, to explore our own capabilities. In the course of the work done, we expanded our knowledge in the field of biology and chemistry. When studying varieties of apple trees, we found out what varieties of apple trees are grown in our region. When performing the experimental part of the work, we learned that apples contain a lot of iron, iodine, and ascorbic acid and proved this.

Information sources

1. Book for reading on botany: For students of grades 5 - 6. Comp. D.I. Traitak. – 2nd ed., revised. – M.: Education, 1985. – 223 p., ill.
2. Chemistry. 9th grade: educational. for general education institutions/O.S. Gabrielyan. – 13th ed., stereotype. – M.: Bustard, 2008.
3. Chemistry. 10: textbook. for general education institutions/ X46 O.S. Gabrielyan, F.N. Maskaev, S.Yu. Ponomarev, V.I. Terenin - 4th ed., stereotype. - M. Drofa, 2003
4. www.yabloko.ru
5. www.cofe.ru/apple/
6. www.wikipedia.org/wiki/Apple
7. www.apple.com/ru/

Leaders:
biology teacher Grankina Lyudmila Vasilievna,
Chemistry teacher Tatyana Vasilievna Nadobnykh,
Geography teacher Natalya Nikolaevna Solenkova

How to prove that the husband did not support his grandmother?

Your question:

My husband died. I am the only heir of the first stage. There is an apartment left. Which he also inherited at one time. Now his grandmother has filed a lawsuit to recognize her as a dependent (allegedly he has been supporting her for the last few years. Although this is not so) and is claiming 1/2 of the apartment .what should I do in such a situation? Allegedly, he gave her 3000 thousand rubles once a month and bought food twice a month. What are her chances based on your practice?

Lawyer's response:
Hello.
grandmother filed a claim to be recognized as a dependent
Olga
Since the grandmother filed such a claim, the burden of proving it lies with her. If your spouse in reality did not support his grandmother, then she will not be able to justify the contrary, because the court makes a decision on the basis of written evidence. In addition, if the grandmother receives a pension or has other income, then she cannot be recognized as a dependent, because judicial practice we can come to the conclusion that the legislator means that a person is dependent on the full support of the breadwinner or receives such assistance from him, which is his constant and main source of livelihood.

How to prove that an apartment purchased during marriage was purchased with funds received from the sale of another apartment owned by the parents of one of the spouses?

Your question:

More than 10 years ago, when we were married, my ex-husband took the money received from the sale of my mother’s apartment to purchase an apartment and registered it in his name. I didn’t take any receipts from him, I didn’t draw up any other documents, relying on his integrity. He worked irregularly, did not pay taxes, i.e. confirm the purchase of the premises for own funds can not.
Now he threatens that when the housing is divided, I will still not be able to sell my share, nor rent it out, nor use it, as he calls it “welcome to ownership on paper.”
Question: How can one move away from the equal division of this apartment when dividing property, or how can one prove that he did not actually purchase this apartment with his own money and money from the family budget? I have a child, he also did not support the child and does not support it.

Lawyer's response:
In court, it is necessary to justify, not with words of course, but with documents, that the funds for this apartment specifically came from the sale of the mother’s apartment. Pick up the documents for the sale of that apartment. Where the funds from e1 sales were in a bank account or at home or were immediately transferred for the purchase of a new apartment. This will all be revealed in court.
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How can I prove that I supported a child?

Your question: how to prove that a ripe apple contains glucose

Good evening! Please tell me, I gave money to my common-law wife for the maintenance of our child for 10 months from the moment of his birth. She plans to apply for child support for the entire period from the birth of the child. How can I prove that for these 10 months I supported the child and we had a common household with my common-law wife? Thank you.

Lawyer's response:
Hello.
In accordance with Part 2 of Art. 107 of the RF IC, alimony is awarded from the moment of appeal to the court. Alimony for the past period can be recovered within a 3-year period from the date of appeal to the court, if the court establishes that before the appeal to the court, measures were taken to obtain funds for maintenance, but alimony was not received due to the evasion of the person obliged to pay alimony, from paying them.
In accordance with Art. 56 of the Code of Civil Procedure of the Russian Federation, any party substantiates those incidents to which it refers as the basis for its own claims and objections, unless otherwise provided by federal law.
In this way, you essentially don’t need to justify anything. It is only necessary to refute the plaintiff’s reasons.
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How to confirm that the husband does not support the child for 5 months

Your question:

The child is 5 months old. The husband insists on divorce, there are scandals every day. I want to move in with my mother, but she won’t let me live together. He is rude, rude, may not come home, I don’t know how he lives and what he does, he doesn’t answer questions. Officially not working. He doesn’t give money for the maintenance of the child, he buys for the child at my request only with scandal. He doesn’t buy me anything at all, not even groceries. He said that he was not obliged to support me. My mother transfers money to me for food. I live in St. Petersburg. Is there a chance to apply for child support and child support indicating a fixed amount per month? How much can I expect? How can I prove that my husband is not helping me?

Lawyer's response:
Hello, Natalia.
You have the right to count on alimony payments in the amount of 1/4 of your spouse’s total income. Submit your application. The court issues an order. The accounting department of the organization where your spouse works holds the funds and transfers them to you.
You also have the right to seek alimony to support yourself. These amounts will be paid to you until your child reaches 3 years of age.
The documents are submitted to the arbiter.
Good luck to you.
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Will I be able to prove that my daughter-in-law slandered me?

Your question:

Hello!
My name is Maria Nikolaevna, 60 years old. I have an unpleasant family situation. Three years ago my son got married. His wife did not work and still does not work. All this time he fully supported his family. My son bought an apartment with a mortgage while he was already married. This year their second child was born and in the process of registering maternity capital and others like it, problems began. Maternity capital was contributed to the mortgage debt, and the daughter-in-law hid the rest of the benefits from my son. But I wasn’t particularly interested in their financial affairs, but my daughter-in-law began accusing me of the fact that, according to her, my son didn’t want to live with her and was cheating on her. For my part, I tried to reconcile them, but my attempts were unsuccessful. Our son moved to live with us at his parents’ house and has been living with us for 2 months. And at this time my daughter-in-law is slandering both him and me to all people we know and don’t know, even if you don’t go out into the street (our town is small, everyone knows each other). I have a bunch of diseases, including hypertension. Due to nervousness, all my ailments worsened.
Lawyer's response:
Dear Maria Nikolaevna! Good evening! Were there rude insults on social networks?
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How can a grandmother prove that her grandson supported her during the last year of his life?

Your question:

My husband died. I am the only heir in the first place. But my grandmother filed a lawsuit. Allegedly he Last year in my life (I just didn’t live with him this year) I supported her. But I know for sure that this is not so. How can she supposedly prove this and how can I prove that this is a lie?

Lawyer's response:
Dear Olga!
Grandma wants to be recognized as a dependent, or what? Doesn't she get a pension?
How can I prove that this is heresy?
Olga
You will be able to explain in court that your spouse did not support his grandmother because he did not have the means to do so. And the grandmother must justify that she received maintenance from her grandson, and this maintenance was the main source of her income.
V)
a person who received from
died more than a year before his death - regardless of similar
relations - full maintenance or such periodic assistance as was
for him the constant and main source of livelihood, regardless of
receiving them own earnings, pensions, scholarships and other payments. At
assessing the evidence presented to prove the existence of a dependent,
the ratio of assistance provided by the testator and other
income of the disabled person.
…
PLENATURE OF THE SUPREME COURT OF THE RUSSIAN FEDERATION
RESOLUTION
dated May 29, 2012
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How to correctly draw up an appeal to the magistrates' court for the assignment of alimony without divorce?

Your question:

Good evening. My husband has a child from his first marriage and pays alimony in the amount of 25% of his salary. Our daughter was born. I don’t receive maternity benefits, we live in a rented apartment and our child actually has less than the subsistence level.
I decided to apply for alimony so that my child would not be disadvantaged compared to my husband’s first child. My parents buy almost everything my child needs. We only have money left for food.
Please tell me how to properly file an appeal to the magistrates' court to prove that the husband does not support the child?
My husband and I are registered in different living spaces.
If my husband and I actually live together, will there be enough grounds to assign alimony?
I don’t want to get a divorce for alimony.

Lawyer's response:
Hello! File a claim with your spouse. The third party should be the spouse's first spouse. Write that the spouse does not provide child support. Demand to recover 1/6 of the earnings and other income, which corresponds to Article 81 of the House Code of the Russian Federation. There is no need to justify anything.
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How to properly file a claim against the actions of the executor

Your question:

My salary card has been seized, but children's money comes to it every month. I had a fine of 5,000. I couldn’t pay it yet, because I support my family alone (myself, my child and my mother), the salary is small - 25,000, from which I have to pay rent, garden, food, and clothe my daughter. Of course there are not enough of them. There was about 500 rubles left on my card, when I went to check the balance it turned out to be minus 8000 rubles on the card. At Sberbank they told me that there was an arrest on the card and gave me the name of the bailiff - Khegai Yu. A. Izmailovsky ROSP UFSPP.
The bailiff could not explain why there was minus 8000 on the card, he said that he only wanted to get 4500. He also did not explain why 4500. Refers to a bank error. At the bank they send me to the bailiff. I said that his actions were illegal, because the bailiff has the right to only 50% of the amount that is on my card, but there was practically no money on the card. In addition, the child benefit is not my money, but the child’s. That is, when I receive an advance in the amount of 10,000 rubles, they will immediately withdraw 8,000 from me and I will have nothing to feed my child.
Lawyer's response:
You Liana do not need to go to court statement of claim, and a complaint against the actions of the bailiff, ask the court to cancel the seizure of the bank card, on the grounds you stated above.
Please note that the complaint against the decision official of the bailiff service, his actions (inaction) are submitted within 10 days from the date the bailiff issued a decision, committed the act, established the fact of his inaction or refused to challenge. A person who was not notified of the time and place of action shall file a complaint within 10 days from the date on which this person found out or should have found out about the adoption of a decision or the commission of actions (inaction).
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How to prove in court that it was the second owner of the property who actually entered into the inheritance?

Your question:

The apartment was privatized in 1995 for 2 people - my mother and her nephew, both were registered in the apartment. In 2003, the nephew died, and his heirs were his wife and son. The wife submitted an application for acceptance of the inheritance within the established time frame, but the property right has not yet been registered, although the son of the deceased nephew has long since reached adulthood. The mother has been maintaining housing all these years: she pays rent in full, makes repairs, etc. Is it possible to establish in court that it was she who actually accepted the inheritance.

Lawyer's response:
the fact that the right is not written down is one thing, perhaps they have a notary certificate in their hands
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How to prove in court that the child support provider has unconfirmed income and increase the amount of alimony?

Your question:

Hello! I have this situation ex-husband has two registered non-profit organizations in St. Petersburg (which, of course, is not prohibited from engaging in commercial activities), but for many years he has been submitting only zero declarations for them. At the same time it carries out commercial activities daily, stands in the park and sells souvenirs self-made. Without a contract, renting a place, on a bird's license. He presents this as a demonstration of his work, but in reality, the goal, of course, is to sell. I applied for alimony for him (he has one common child) in a fixed amount, no receipts, invoices, checks, etc. he doesn’t lead, so I couldn’t provide any evidence to the court, only printouts from the Internet of articles about him as an artist, a master of his craft, about how he shows everyone his works with photos in the park. He said that he doesn’t sell anything, he only demonstrates, he has no income, his eldest son supports him. He was awarded 1/2 the subsistence minimum per child in St. Petersburg. I filed an appeal, but it also didn’t yield anything; the court only requires invoices, contracts, checks, etc.
Lawyer's response:
Good afternoon
The question is, what can I do to record his illegal commercial activities, how can I oblige him to register?
Olga
You can contact the tax office regarding illegal entrepreneurial activity.
Article 171 of the Criminal Code of the Russian Federation Illegal entrepreneurship
1. Carrying out business activities without registration or without a license in cases where such a license is irrevocable, if this act has caused great harm to citizens, organizations or the state or is associated with the extraction of income in a large amount, - is punishable by a fine of up to three hundred thousand rubles or in the amount salary or other income of the convicted person for a period of up to 2 years, or mandatory work for a period of up to four hundred eighty hours, or arrest for a period of up to 6 months.
GARANT system: base.garant.ru/10108000/23/#ixzz3lt4eocGb
________________________________________

How to prove that you did not drink alcohol at work

Your question:

I have had heart disease for four years and am in the hospital every year, and this diagnosis is written down on my card, and I take medications that contain alcohol-containing liquid. At the workplace I felt bad and I took medicine, and they accused me of being intoxicated at work. How can I prove that I did not drink alcohol?

Lawyer's response:
It was necessary to immediately donate blood for analysis (medicines in large ppm will not show), this is the first thing and provide a certificate from the doctor about the need to take medications. Present all this to management with explanatory notes. If they do not accept this and punish you, then you can challenge the order of punishment in court.
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Presentation on the topic: Ripe apples

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RELEVANCE You won’t surprise anyone with apples now, they are on our table all year round. There are different varieties, choose to suit every taste. PROBLEM You always want to pick a ruddy apple straight from the branch of an apple tree, most often without waiting for it to ripen, because... appearance deceptive.

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RESEARCH OBJECTIVES: - To prove that fruit ripening is chemical process, in which starch is converted into sugar. - prove the presence of starch in unripe apples. - prove the presence of glucose in ripe apples. - prove that apples contain water.

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WORKING HYPOTHESIS: Unripe apples are tasteless because they do not contain sugar and are not juicy because they have little water. INTENDED NOVELTY: We independently, in a school laboratory, proved the presence of glucose, water and starch in apples. RESOURCES: Equipment: scales, alcohol lamp, alkali solution, copper sulfate solution, iodine, litmus, universal litmus paper, glycerin, glucose, ammonia solution of silver oxide.

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STEPS OF WORK: 1. Theoretical part: search for information on the research topic.2. Practical part: buying apples, carrying out experiments to prove the composition of apples.3. Analysis of theoretical and practical material. Experiments underlying the study: a) Determination of the pH value of the medium aqueous solution ripe and unripe apples; b) Detection of water in apples; c) Detection of starch and glucose in apples. 4. Creating a presentation.

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HOW MUCH WATER IS IN APPLES? The water content in an apple ranges from 75 to 97%. And although apples contain a lot of water, they are nevertheless tasty and contain valuable substances necessary for our nutrition. WHAT WE DID: - weighed the apple on the scales; - grated an apple; - the mass was placed in cheesecloth and the juice was squeezed out. - The remaining mass was laid out on a plate and the water was allowed to evaporate. - weighed again Conclusion: After re-weighing, we were convinced that the weight of the apple became less than the weight of the water that evaporated from it. Apples contain water. A ripe apple contains more water than an unripe one.

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HOW MUCH WATER IS IN APPLES? WHAT WE DID: - weighed the apple on the scales; - grated an apple; - the mass was placed in cheesecloth and the juice was squeezed out. - The remaining mass was laid out on a plate and the water was allowed to evaporate. - weighed again Conclusion: After re-weighing, we were convinced that the weight of the apple became less than the weight of the water that evaporated from it. The water content in an apple ranges from 75 to 97%. And although apples contain a lot of water, they are nevertheless tasty and contain valuable substances necessary for our nutrition. Apples contain water. A ripe apple contains more water than an unripe one.

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DETERMINATION OF MALIC ACID Universal indicator paper and litmus determine the change in pH of the pH value environment. If, when adding a solution, the color of the piece of paper changes to red, this indicates an acidic solution. If the color of the paper turns blue, then the solution is alkaline. WHAT THEY DID: take an apple, drop a drop of juice onto a piece of universal paper. CONCLUSION: The paper changes its color. She turns pink. Therefore, apple juice contains weak malic acid. Apples contain acid. An unripe apple has more acid than a ripe one.

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DETERMINATION OF STARCH To verify the presence of starch in an apple, drop a little iodine onto the sample. A dark blue color should appear. What they did: They took a ripe apple and an unripe one. Cut into thin slices. A few drops of iodine were dropped on them. Conclusion: Blue coloring appears only on the cut of an unripe apple. A ripe apple contains no starch. Starch is found in apples that are not yet ripe.

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DETERMINATION OF STARCH To verify the presence of starch in an apple, drop a little iodine onto the sample. A dark blue color should appear. What they did: They took a ripe apple and an unripe one. Cut into thin slices. A few drops of iodine were dropped on them. Conclusion: Blue coloring appears only on the cut of an unripe apple. This means that a ripe apple contains no starch. Starch is found in apples that are not yet ripe.

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DETERMINATION OF GLUCOSE What they did: Pour apple juice into a test tube (3 cm along the height of the test tube). The same amount of sodium hydroxide solution was added, and then a solution of copper sulfate was added drop by drop. The solution turns a beautiful blue color. The resulting solution was heated on an alcohol lamp. Gradually the solution changes color: blue - green - yellow - red. CONCLUSION: The appearance of a red color (the color of tomato juice) indicates that in apple juice contains glucose. Glucose is a type of sugar. Glucose is found in apples that are ripe. Unripe apples do not contain glucose.

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DETERMINATION OF GLUCOSE What they did: Pour apple juice into a test tube (3 cm along the height of the test tube). The same amount of sodium hydroxide solution was added, and then a solution of copper sulfate was added drop by drop. The solution turns a beautiful blue color. The resulting solution was heated on an alcohol lamp. Gradually, the solution changes color: blue - green - yellow - red. CONCLUSION: The appearance of a red color (the color of tomato juice) indicates that apple juice contains glucose. Glucose is a type of sugar. Glucose is found in apples that are ripe. Unripe apples do not contain glucose.

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WHY DO APPLES DARKEN WHEN CUT? WHAT WE DID: 1. We took an apple and a lemon. Cut the apple in half, place it cut side up on a saucer and squeeze a little lemon juice onto one of the halves. After a few hours, the “clean” half of the apple darkened, but the one that was “protected” by lemon juice remained the same white. 2. Grate the apple into 2 containers. Lemon juice was added to one of them. After a few hours, the “clean” part of the applesauce darkened, but the part that was “protected” by the lemon juice remained the same white.

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Apples contain a lot of iron, and iron compounds can be divalent or trivalent. When the apple is intact, all the iron in it is divalent, and its compounds are light green in color. When you bite into an apple, oxygen from the air gradually penetrates into the apple and oxidizes the iron. It becomes ferric, and ferric iron compounds have a brownish-brown color. CONCLUSION: Darkening occurs due to the oxidation of iron contained in the apple by atmospheric oxygen. And ascorbic acid, contained in lemon, is a natural antioxidant that slows down oxidation processes. Apples contain many very useful substances, including iron. Of course, no matter how much you chew apples, you won’t find pieces of the iron we are used to there, but iron is still there in the form of very small, visible to the eye particles. When these tiny particles of iron come into contact with air, or rather with oxygen in the air, they begin to darken. Lemon juice covered the cut with a protective film, and oxygen could not reach the iron.

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BIOLOGICAL SIGNIFICANCE OF APPLES - Pectin, which is contained in apples, improves digestion and makes our skin healthier. - Natural glucose contained in apples relieves fatigue. The iron contained in apples raises the level of hemoglobin in the blood. - It is enough to eat 4 - 5 apples a day to stock up on all the useful vitamins and microelements. - It is very important to eat apple seeds. Five apple seeds eaten contain the daily requirement of iodine for an adult. - Apples also cleanse the body and remove old toxins.

Slide no. 20

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CONCLUSIONS OF THE WORK: Using a qualitative reaction, we proved the presence of starch and glucose in apples. We determined water and acid in apples, as well as the presence of iron. Thanks to the work done, we proved that in juicy ripe apples there is no starch, but there is glucose. An unripe apple contains no sugar; but it contains a lot of starch. In a ripened apple, an iodine solution can show the absence of starch; and the sugar test is the presence of grape sugar. Fruit ripening is a chemical process that converts starch into sugar.

How to prove experimentally that a ripe apple contains glucose. and got the best answer

Answer from Boobzik[guru]
Qualitative reaction of glucose with copper (II) hydroxide
Glucose contains five hydroxyl groups and one aldehyde group. Therefore, it belongs to aldehyde alcohols. Her Chemical properties similar to the properties of polyhydric alcohols and aldehydes. Reaction with copper(II) hydroxide demonstrates restorative properties glucose. Add a few drops of copper (II) sulfate solution and an alkali solution to the glucose solution. No copper hydroxide precipitate is formed. The solution turns bright blue. In this case, glucose dissolves copper (II) hydroxide and behaves like a polyhydric alcohol. Let's heat the solution. The color of the solution begins to change. First, a yellow precipitate of Cu2O is formed, which over time forms larger red CuO crystals. Glucose is oxidized to gluconic acid.
CH2OH – (CHOH) 4 – СОН + Cu(OH) 2 = CH2OH – (CHOH) 4 – COOH + Cu2O↓+ H2O

Answer from Fable[guru]
Cut out the core of the apple, crumple up some kind of Glucose poster and carefully put it inside the apple - 100% proof!

Answer from Yensei_Vlad[guru]
buy
Blood glucose test
Indicator strips for semi-quantitative determination of glucose in blood (0.0-55.5 mmol/l) “DIAGLUK”

Answer from Monkey[active]
Give it to a rat - the rat will not eat sour food, only with glucose

Answer from 3 answers[guru]

Hello! Here is a selection of topics with answers to your question: how to experimentally prove that a ripe apple contains glucose.

1. You have been given test tubes with solutions, one of which contains glycerol, another - aldehyde, and the third - glucose.

Using the same reagents, identify each substance.

2. One test tube contains machine oil, obtained from petroleum, in the other - vegetable oil. Determine chemically which oil is in each test tube.

3. Starting from ethyl alcohol, obtain: a) an ester, b) an aldehyde, c) an acid.

4. Prove experimentally that ordinary sugar contains carbon.

5. Prove experimentally that: a) potatoes and white bread contain starch, b) a ripe apple contains glucose.

6. Using characteristic reactions, identify each of the three substances in two sets: a) starch, sucrose, glucose, b) glycerin, soap, starch (solutions).

7. You have been given test tubes with solutions, one of which contains glycerol, the other contains protein. Using the same reagents, identify each substance.