Multiple Choice
Which one of the following statements is not true according to the Law of Conservation of Mass?
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1. Intro to General Chemistry
Classification of Matter
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Which term best describes a suspension of oil droplets in a liquid?
A
Emulsion
B
Compound
C
Colloid
D
Solution
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Understand the definitions of each term: A compound is a substance formed when two or more chemical elements are chemically bonded together. A colloid is a mixture where one substance of microscopically dispersed insoluble particles is suspended throughout another substance. A solution is a homogeneous mixture composed of two or more substances. An emulsion is a type of colloid in which one liquid is dispersed in another liquid.
Identify the characteristics of the mixture in question: The problem describes a suspension of oil droplets in a liquid.
Recognize that oil droplets suspended in a liquid form a heterogeneous mixture, where the oil droplets are dispersed in another liquid.
Recall that an emulsion is specifically a type of colloid where both the dispersed phase and the continuous phase are liquids.
Conclude that the term 'emulsion' best describes the suspension of oil droplets in a liquid, as it fits the definition of a liquid-liquid colloid.
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