Question

1. which of these is a chemical change?

a water evaporating
b dissolving salt in water
c ice cubes melting
d baking a cake

Explanation:

A chemical change results in a new substance being formed. Water evaporating, dissolving salt in water, and ice - cubes melting are physical changes as no new substances are created. Baking a cake involves chemical reactions between ingredients like flour, eggs, and baking powder to form a new substance (the cake), so it is a chemical change.

Answer:

d. baking a cake