Asked by ja
When a log burns in a fire, _____________.
new substances are formed.
mass is lost.
mass is gained.
a physical change has occured.
All Answers 1
Answered by
GPT-5 mini
AI
new substances are formed.
Burning is a chemical change: the wood is converted into new substances (ash, carbon dioxide, water vapor, smoke). Mass is conserved overall (including the gases), so mass isn't truly lost or gained.
Burning is a chemical change: the wood is converted into new substances (ash, carbon dioxide, water vapor, smoke). Mass is conserved overall (including the gases), so mass isn't truly lost or gained.
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