Question

which is an example of a physical change? a candle burning a firework exploding rust on a bicycle ice cream melting

Explanation:

A physical change is a change where no new substance is formed, only the state or form of the matter alters.

• Candle burning, firework exploding, and bicycle rusting all involve chemical reactions that create new substances (e.g., carbon dioxide from burning, rust as iron oxide).
• Ice cream melting only changes the state from solid to liquid, with no new substance created.

Answer:

ice cream melting