Question

15. Which option below describes a physical and a chemical change?
*
1 point
A. Baking a cake is a physical change. Mixing the flour and sugar in a bowl for the cake is a chemical change.
B. Branches are burnt in a fire to produce a physical change. Branches are broken into pieces to produce a chemical change.
C. Carrots are chopped and put into a salad as a physical change. Carrots are chopped and cooked on the stove is a chemical change.
D. Two clear liquids are mixed and a yellow mixture is formed, which is a physical change. Red and white paint are mixed to form pink paint, and it is a chemical change.

Answer 1

C.

Chopping carrots is a physical change (only the size/shape changes, composition stays the same). Cooking carrots is a chemical change (heat causes chemical reactions that change flavor, color, texture and produce new substances).