Answered

a camper burned a piece of paper to start a campfire. is burning paper a physical or chemical change? why? 

If you said chemical, what are the reactants and products?
The ash has less mass than the paper, was mass conserved during the reaction? explain

Verified Answer :

Kalahira

A camper burning a piece of paper to start a campfire is a chemical
change - the way you can think of this is to consider the fact that the
paper cannot be put back together and has become ash, so this is
therefore a chemical change. The carbon in the paper is oxidized into
other chemical including carbon dioxide. Mass was conserved during this
reaction because the mass is still the same, just in a different form.

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