Question

a sample of metal is heated until it melts and begins to glow red. when it cools it appears the same as it did before it was heated. this is strong evidence that a chemical reaction has occurred. true false

Explanation:

A chemical reaction results in the formation of new substances with different chemical properties. Here, the metal returns to its original state after cooling, indicating a physical change (melting - a phase change) rather than a chemical reaction.

Answer:

FALSE