Classify each of the following as an element, a compound, or a mixture:
-
copper
-
water
-
nitrogen
-
sulfur
-
air
-
sucrose
-
a substance composed of molecules each of which contains two iodine atoms
-
gasoline
Solution:
- element
- compound;
- element;
- element;
- mixture;
- compound;
- element;
- mixture
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