What do these two changes have in common?
rain forming in a cloud
water boiling on a stove

 - Both are caused by heating.
 - Both are only physical changes.
 - Both are caused by cooling.
 - Both are chemical changes.
Step 1: Think about each change.
Rain forming in a cloud is a change of state. So, it is a physical change. Water vapor in the air condenses into tiny droplets of liquid water. These droplets make up a cloud. When there is enough water in the air, the droplets will fall as rain.
Water boiling on the stove is a change of state. So, it is a physical change. The liquid changes into a gas, but 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.
Water boiling is caused by heating. But rain forming in a cloud is not.
Both are caused by cooling.
Rain begins to form when water vapor in the air becomes liquid water. This is caused by cooling. But water boiling is not.