Chewing food to break it down into smaller particles represents a ..... change, but the changing of starch into sugars by enzymes in the digestive system represents a ..... change.

CHEMISTRY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Chewing food to break it down into smaller particles represents a ____ change, but the changing of starch into sugars by enzymes in the digestive system represents a ____ change.

A	Chemical then Physical
B	Physical then Chemical
C	Both Physical
D	Both Chemical

Explanation:

Detailed explanation-1: -Physical then Chemical Chewing breaks down matter into smaller particles of the same substance. Enzymes change starch into sugar which is a new substance.

Detailed explanation-2: -Two types of changes occur with the food within the mouth. First is physical change and the other is chemical change. The physical change occurs while chewing the food (big lump of food is broken into smaller pieces) and the chemical change is marked by the action of saliva on food.

Detailed explanation-3: -the changing of starch into sugars by enzymes in the digestive system represents a CHEMICAL change.

Detailed explanation-4: -Mechanical digestion is the physical degradation of large food particles into smaller pieces that digestive enzymes can access through chemical digestion.

There is 1 question to complete.

EVERYDAY SCIENCE

SCIENCE

CHEMISTRY