What do these two changes have in common?
chicken cooking in an oven
baking an apple pie
A: Both are caused by cooling.
B: Both are caused by heating.
C: Both are only physical changes.
Step 1: Think about each change.
Cooking chicken is a chemical change. The heat causes the matter in the chicken to change. Cooked chicken and raw chicken are different types of matter.
Baking an apple pie is a chemical change. The type of matter in the pie changes when it is baked. The crust turns brown, and the apples become soft.
Step 2: Look at each answer choice.
Both are only physical changes.
Both changes are chemical changes. They are not physical changes.
Both are chemical changes.
Both changes are chemical changes. The type of matter before and after each change is different.
Both are caused by heating.
Both changes are caused by heating.
Both are caused by cooling.
Neither change is caused by cooling.