Problem 3SAQ
Which change is a physical change?
a) wood burning
b) iron rusting
c) dynamite exploding
d) gasoline evaporating
Step-by-Step Solution:
Step 1 of 5
A chemical change occurs when chemical properties of a substance change and form a new compound.
Example : Water dissociates into hydrogen and oxygen.
A physical change occurs when the physical properties of a substance change, but its composition remains the same.
Example :Water turns into ice.
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Step 2 of 5
Chapter 1, Problem 3SAQ is Solved
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Step 3 of 5
