Which is chemical and which is physical?

Question

A match is lit and held under a cold piece of metal The following observations are made :

A. the match burns

b. metal gets warmer

c. water condenses on teh metal

d. soot is deposited on the metal

Answer 1

A. Chemical

B. Physical

C. Physical

D. Physical

If the change is in state, size, shape, or something simple like that, it is a physical change. A chemical change changes the substance entirely (like rusting on a bike).

Answer 2

chemical is something that cannot be undone, so therefore

a. chemical

b. physical

c. physical

d. physical