Problem: Determine whether each change is physical or chemical.(a) A copper wire is hammered flat.(b) A nickel dissolves in acid to form a blue-green solution.(c) Dry ice sublimes without melting.(d) A match ignites when struck on a flint.

FREE Expert Solution

We’re being asked to determine whether each change is physical or chemical.


Physical change → there is a change in a matter as it goes from one physical state to another.

Chemical change → atoms rearrange themselves to create a new substance. 


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Problem Details

Determine whether each change is physical or chemical.

(a) A copper wire is hammered flat.
(b) A nickel dissolves in acid to form a blue-green solution.
(c) Dry ice sublimes without melting.
(d) A match ignites when struck on a flint.

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