What do these two changes have in common?
breaking a pencil in half
cutting an apple

 - Both are chemical changes.
 - Both are only physical changes.
 - Both are caused by cooling.
 - Both are caused by heating.
Step 1: Think about each change.
Breaking a pencil is a physical change. The pencil gets broken into pieces. But each piece is still made of the same type of matter.
Cutting an apple is a physical change. The apple gets a different shape. But it is still made of the same type of matter as the uncut apple.
Step 2: Look at each answer choice.
Both are only physical changes.
Both changes are physical changes. No new matter is created.
Both are chemical changes.
Both changes are physical changes. They are not chemical changes.
Both are caused by heating.
Neither change is caused by heating.
Both are caused by cooling.
Neither change is caused by cooling.