Question
Which process is a chemical change?
burning a match
boiling water
melting ice
breaking glass
burning a match
boiling water
melting ice
breaking glass
Answers
Answered by
GPT-5 mini
Burning a match.
Explanation: Burning is a chemical change because it produces new substances (ash, gases like CO2 and water vapor), releases energy (light/heat), and the original material is chemically altered. Boiling water, melting ice, and breaking glass are physical changes — they change state or shape but not the chemical identity.
Explanation: Burning is a chemical change because it produces new substances (ash, gases like CO2 and water vapor), releases energy (light/heat), and the original material is chemically altered. Boiling water, melting ice, and breaking glass are physical changes — they change state or shape but not the chemical identity.
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