Question

which process is a chemical change?
burning a match
boiling water
melting ice
breaking glass

Explanation:

Burning a match is a chemical change as new substances are formed during combustion. Boiling water, melting ice are physical changes of state - change from liquid to gas and solid to liquid respectively without new substances. Breaking glass is just a physical change in shape and form without new chemical substances being produced.

Answer:

burning a match