What do these two changes have in common?
carving a piece of wood
ice melting in a cup

 - Both are caused by heating.
 - Both are caused by cooling.
 - Both are only physical changes.
 - Both are chemical changes.
Step 1: Think about each change.
Carving a piece of wood is a physical change. The wood changes shape, but it is still made of the same type of matter.
Ice melting in a cup is a change of state. So, it is a physical change. The solid ice becomes liquid, but it is still made of water.
The links between atoms in the water molecules do not change. So, a different type of matter is not formed.
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.
Ice melting is caused by heating. But carving a piece of wood is not.
Both are caused by cooling.
Neither change is caused by cooling.