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i think chemical change

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Q: When you leave a half eaten apple on your desk for a day the exposed part turns brown the apple is reacting with what kind of element?
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A sliced apple turning brown is exhibiting the ability to react with oxygen a physical property?

It is because an apple have some iron so when it is exposed into air the iron gets oxidised and turns reddish/ brown.


What is an hypothesis for cutting an apple?

Hypothesis 1: When you disturb the skin of an apple by cutting the apple into half, the exposed area will turn brown due to exposure to air.Hypothesis 2: If you snugly wrap or cover the exposed area of an apple after cutting it (disturbing the skin), you can slow down how fast the inside turns brown. Hypothesis 3: If you remove all of the skin of an apple and let it sit in the air, the outside will turn brown but the inside will not turn brown at the same rate. Hypothesis 4: If you remove all the skin of an apple AND slice the whole apple into pieces, all sides exposed to air will turn brown; if some slices are thicker, the inside will turn brown more slowly than the exposed outside areas.


How do you speed the browning of an apple?

leave it out exposed to the air, some apples dont brown, pick one that does brown easily


Why should apple not be peeled?

An apple should not be peeled because it will turn brown when the flesh is exposed to the air this can be prevented with citric acid (lemon juice)


Why does lime juice keep an apple from turning brown?

There is a high amount of acid in lime juice and the part of the apple that makes it turn brown(enzyme) when exposed to oxygen, has an edible effect on the enzyme to protect it from browning


What won't turn the apple brown?

I assume you are asking how to prevent a cut apple from oxidizing, or turning brown from contact with the air. Firstly, don't cut it before you need it...the longer it is exposed, the more chance for oxidization. Secondly, you can coat the exposed apple surfaces with lemon juice. Place the cut pieces in a Ziplock bag, add lemon juice, and shake gently to coat. The juice will inhibit oxidization. Thirdly, keep any cut apple pieces in an air-tight container to limit their exposure.


What colour are apple seeds?

Dark brown apple seeds are brown


Does an apple skin protect the apple from chemical changes?

Not in general. It does protect the flesh of the apple from certain specific chemical changes (such as oxidation) to some extent, by keeping the oxygen away from the flesh. This is why an apple rapidly turns brown when you cut it: the previously protected flesh is now exposed to oxygen in the air.


Was it because of Rihanna that Chris Brown went to jail?

Yes, chris brown was only reacting to her giving him an disease


What is the Hypothesis about the apple turning brown?

That the lime was going to help the apple from turning brown.


Why does lemon juice save an apple?

When exposed to air, apples turn brown due to oxidation. Lemon juice is rich in vitamin C, which is a natural antioxidant, and stops the oxidation process that turns apples brown when exposed to air. It also lowers the pH (making it more acidic) which is hostile to some of the common microorganisms.


When was Light brown apple moth created?

Light brown apple moth was created in 1863.