Digestion- Physical and Chemical Changes

Front

What is a chemical change?

Back

A process where a new substance is formed with different properties than the original substance.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is mechanical digestion?

Back

The process of breaking down food into smaller pieces through physical actions like chewing.

Front

What is chemical digestion?

Back

The process of breaking down food into simpler nutrients that can be used by the body through chemical reactions.

Front

What is an example of a chemical change?

Back

A rotting banana, as it forms new substances and has different properties.

Front

What is an example of a physical change?

Back

Crushing a potato, as it changes the shape but not the chemical composition.

Front

What are clues that indicate a chemical change?

Back

Change in color, change in energy, change in odor.

Front

Which change does not indicate a chemical change?

Back

Change in shape.

Front

What happens to food in the mouth during digestion?

Back

Food is digested mechanically by chewing.

Front

What is the role of enzymes in digestion?

Back

Enzymes are proteins that speed up chemical reactions to help break down food.