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:
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
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What scientific concept do you need to know in order to solve this problem?
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