Multiple Choice
Why is chemistry often referred to as the central science?
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1. Intro to General Chemistry
Classification of Matter
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Which one of the following is an example of a homogeneous mixture?
A
Granite
B
Sand and iron filings
C
Salt water
D
Oil and water
Verified step by step guidance1
Understand the definition of a homogeneous mixture: it is a mixture that has a uniform composition and appearance throughout, meaning you cannot distinguish its different components by the naked eye.
Analyze each option to determine if the mixture is uniform: Granite is a solid rock composed of different minerals visibly mixed, so it is heterogeneous.
Sand and iron filings are visibly distinct particles mixed together, so this is a heterogeneous mixture.
Salt water is a solution where salt is completely dissolved in water, creating a uniform composition throughout, making it a homogeneous mixture.
Oil and water separate into layers because they are immiscible liquids, so this is a heterogeneous mixture.
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