<|system|>
Complete the sentence.
A puddle freezing into ice on a cold night is a ().
A: chemical change
B: physical change</s>.
<|user|>
Can you answer based on context?
<|assistant|>
A puddle freezing into ice on a cold night is a change of state. So, it is a physical change. Liquid water freezes and becomes solid, but it is still made of water. A different type of matter is not formed.