its boiling point. its melting point. a chemical change. a physical change.
I gave my students this multiple choice question: When the wax from a candle drips, the wax has reached

Only one answer is correct among these 4 choices:
- its boiling point.
- its melting point.
- a chemical change.
- a physical change.

Could you tell me which one is correct?

its melting point.