<|system|>
Complete the sentence.
Dust settling out of the air is a ().
A: chemical change
B: physical change</s>.
<|user|>
Can you answer based on context?
<|assistant|>
Dust settling out of the air is a physical change. As the dust settles, or falls, it might land on furniture or the ground. This separates dust particles from the air, but does not form a different type of matter.