handyroiAlexanddav handyroiAlexanddav

29-01-2016
Physics

contestada

Which of the following is a chemical change?
a. Freezing water
b. Melting ice
c. Bending a wire
d. Burning paper

Respuesta :

29-01-2016

a). Water is still H₂O after it freezes.

b). Ice is still H₂O after it melts.

c). Wire is still Cu when it's bent.

d). Paper combines with the O₂ in the air, and turns into
a lot of new compounds when it burns.

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