V. Challenge
1. What kind of changes (physical or chemical) does the fruit undergo during ripening?
2. What kind of change is: a. cutting of vegetables and b. cooking vegetables? How would
differentiate between the two kinds of changes?
3. Is digestion of food a physical or a chemical change? Why?
ect
Answers
Answer:
1) chemical change
2) a) physical change
b) chemical change
3) digestion of food is a chemical change because it can't be reversible
1) physical change
2) a) physical change
b) chemical change
Physical Change:
A physical change refers to a change where new substances do not form. In other words, it does impact the form of the chemical substance but not the chemical composition of it.
Chemical Change:
A chemical change refers to any change which results in the formation of a new substance. Thus, it means that it affects the chemical composition of the thing.
3)Digestion of food is an example of chemical change. Digestion is considered as chemical change because enzymes in the stomach and intestines break down large macro-molecules into simpler molecules so that the body can absorb the food easily.