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Which statement best describes an element in the classification of matter?
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3. Matter and Energy
Classification of Matter
Multiple Choice
In the classification of matter, which statement best defines a compound?
A
A physical blend of two or more substances with variable composition
B
A substance composed of only one type of atom
C
A homogeneous mixture that cannot be separated by physical means
D
A pure substance made of two or more different elements chemically bonded in fixed proportions
검증된 단계별 안내1
Understand the classification of matter, which includes elements, compounds, and mixtures.
Recall that an element is a pure substance made of only one type of atom.
Recognize that a mixture is a physical blend of two or more substances that can have variable composition and can be separated by physical means.
Identify that a compound is a pure substance composed of two or more different elements chemically bonded together in fixed proportions.
Conclude that the best definition of a compound is: a pure substance made of two or more different elements chemically bonded in fixed proportions.
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