Complete the sentence.
An air freshener making a room smell nice is a ().
A: chemical change
B: physical change
An air freshener making a room smell nice is a change of state. So, it is a physical change. The matter in the air freshener is changing from solid to gas. This is called sublimation.
The gas spreads to fill the room and changes the scent of the air. But it does not form a different type of matter.