Multiple Choice
In the classification of matter, what is the smallest unit of a compound that retains the compound’s chemical properties?
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3. Matter and Energy
Classification of Matter
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In the classification of matter, baking soda (sodium bicarbonate, ) is best classified as which of the following?
A
Compound
B
Element
C
Heterogeneous mixture
D
Homogeneous mixture
Verified step by step guidance1
Understand the classification of matter: Matter can be classified into elements, compounds, homogeneous mixtures, and heterogeneous mixtures based on composition and uniformity.
Recall that an element consists of only one type of atom and cannot be broken down into simpler substances by chemical means.
Recognize that a compound is a substance formed when two or more different elements chemically combine in fixed proportions, resulting in a new substance with unique properties.
Identify that a homogeneous mixture has a uniform composition throughout but consists of two or more substances physically combined, not chemically bonded.
Note that a heterogeneous mixture has visibly different parts or phases and does not have a uniform composition throughout.
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