Multiple Choice
In the classification of matter, what term describes a pure substance made of only one kind of atom?
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3. Matter and Energy
Classification of Matter
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How does an element differ from a compound?
A
An element has a variable composition, whereas a compound always has a variable composition.
B
An element can be separated into simpler substances by a chemical reaction, whereas a compound cannot be separated by chemical means.
C
An element is a homogeneous mixture of substances, whereas a compound is a heterogeneous mixture of substances.
D
An element consists of only one type of atom, whereas a compound contains two or more different elements chemically bonded in a fixed ratio.
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