Multiple Choice
Which of the following best describes baking soda (NaHCO_3)?
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1. Intro to General Chemistry
Classification of Matter
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Which of the following best describes baking soda (NaHCO_3) as a sample of matter?
A
It is a heterogeneous mixture.
B
It is a homogeneous substance.
C
It is a heterogeneous substance.
D
It is a homogeneous mixture.
Verified step by step guidance1
Understand the definitions of the terms involved: A homogeneous substance has uniform composition and properties throughout, while a heterogeneous mixture has visibly different components or phases.
Recognize that baking soda (NaHCO_3) is a pure chemical compound with a fixed chemical formula, meaning it has a consistent composition throughout the sample.
Since baking soda is a single compound and not a mixture of different substances, it cannot be classified as a mixture (heterogeneous or homogeneous).
Because it is uniform in composition and properties, baking soda is best described as a homogeneous substance.
Therefore, among the given options, the description 'It is a homogeneous substance' correctly characterizes baking soda.
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