Multiple Choice
In the classification of matter, how does a compound differ from an element?
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3. Matter and Energy
Classification of Matter
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In the classification of matter, granite is best described as which of the following?
A
A pure element
B
A pure compound with a fixed chemical formula
C
A homogeneous mixture (solution) with uniform composition throughout
D
A heterogeneous mixture (a type of rock made of multiple minerals)
Verified step by step guidance1
Recall the classification of matter, which includes pure elements, pure compounds, homogeneous mixtures, and heterogeneous mixtures.
Understand that a pure element consists of only one type of atom, and a pure compound has a fixed chemical formula with atoms chemically bonded in a specific ratio.
Recognize that a homogeneous mixture has a uniform composition throughout, meaning you cannot distinguish different parts with the naked eye.
Know that a heterogeneous mixture consists of visibly different substances or phases, such as different minerals in a rock.
Since granite is composed of multiple minerals that can be seen as distinct parts, classify it as a heterogeneous mixture.
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