Chemistry Practice Problems Physical & Chemical Changes Practice Problems Solution: A physical change:A. occurs when iron rustsB. occu...

Solution: A physical change:A. occurs when iron rustsB. occurs when sugar is heated into caramelC. occurs when glucose is converted into energy within your cellsD. occurs when water is evaporatedE. occurs when propane is burned for heat

Problem

A physical change:

A. occurs when iron rusts
B. occurs when sugar is heated into caramel
C. occurs when glucose is converted into energy within your cells
D. occurs when water is evaporated
E. occurs when propane is burned for heat

Solution

We’re being asked which of the following conditions is a physical change

Let’s first define a physical change and a chemical change.

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. 


Now, let’s take a look at each condition:

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