객관식
Which of the following compounds is classified as an ionic compound?
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1. Intro to General Chemistry
Classification of Matter
객관식
Which of the following is an example of a homogeneous mixture?
A
Carbon dioxide gas
B
Salt dissolved in water
C
Sand and iron filings
D
Copper metal
검증된 단계별 안내1
Understand the definition of a homogeneous mixture: it is a mixture that has a uniform composition and appearance throughout, meaning you cannot distinguish the different components by the naked eye.
Analyze each option to determine if it fits the definition of a homogeneous mixture:
1. Carbon dioxide gas is a pure substance, not a mixture, so it does not qualify.
2. Salt dissolved in water forms a solution where the salt ions are evenly distributed throughout the water, making it uniform and homogeneous.
3. Sand and iron filings form a heterogeneous mixture because you can see and separate the different components.
4. Copper metal is a pure element, not a mixture, so it does not qualify.
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