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When you cook your food, you are giving heat to the food (a.k.a. kinetic energy) giving the food molecules more energy to move about. Slowly as the heat builds up and the food is reaching its boiling point, then the energy (kinetic energy), starts to break some of the intermolecular bonds. They have a strong covalent. Slowly some off the bonds free and break away, either diffusing (dispersing) into the air or change form, denaturing. As when egg is cooked, for example, some of the intermolecular bonds are broken away and hence causing the food to change shape, (as stated before denaturing).

I'm not sure if that what you wanted but that's what I think it is. Briefly that is.

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12y ago
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14y ago

proteins are highly sensitive to heat , and most proteins in vegetables/meat have a teritiary structure that is highly sterical/spatial in nature.This structure is destroyed which inturn destroys the property of most proteins rendring them useles.s.example -- eggwhite /albumin.Not very useful once cooked ..

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14y ago

Protein molecules maintain their structures mainly by hydrogen bonds.

At a relatively high temperature, the hydrogen bonds are twisted or destroyed.

Thus the protein changes its shape, which is called denatured.

Plenty of the unfolded proteins interconnect by newly-formed hydrogen bonds, preventing light from penetrating. That's why egg turns white.

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12y ago

The texture of the chicken hardens and becomes sort of white from the inside but what happens to the protein molecules inside, well what happens is they form all together and end up being stiff and moist.

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14y ago

they denature. heat changes the structure of proteins.

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12y ago

the molecules of the food denature or change structure whether its protein carbohydrates or fat

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11y ago

Heating causing proteins to denature - lose their shape. This will mean they are unable to perform their normal function.

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11y ago

Thermally decomposition reactions.

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Q: What happens to molecules when food is cooked?
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