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When you put food in your mouth, two processes are at work to begin digesting.

The first process is chewing. This causes a physicalchange in the food. In short, it changes shape and mixes with saliva.

The second process is digestion by saliva. Saliva induces some chemical changes, such as the break down of starches into sugars.

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11y ago
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10y ago

To be honest i am wondering about this kind of question and dying to get the answer.It seems to make sense in both physical and chemical ways. Can hardly give an exact definition but i am thinking that chemical leads to physical.


Anyway the change of essence leads to the one of exterior.

Maybe.

Who knows. :)

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12y ago

Chewing food results in a physical change. However, saliva in your mouth causes a chemical change to carbohydrates.

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13y ago

if anything, it's a biological change : (it is not a chemical change)

it's just an increase in the amount of saliva that is always being produced.

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11y ago

Eating (excepting mastication) is a chemical process.

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