Multiple Choice
Which of the following is a physical property shared by both liquids and gases?
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1. Intro to General Chemistry
Physical Properties
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Why is knowing the melting point of a substance useful to scientists?
A
It indicates the electrical conductivity of the substance.
B
It helps identify and characterize the substance.
C
It reveals the atomic number of the substance.
D
It determines the color of the substance.
Verified step by step guidance1
Understand that the melting point is the temperature at which a substance changes from solid to liquid.
Recognize that each pure substance has a characteristic melting point that can be used as a physical property for identification.
Know that by measuring the melting point, scientists can compare it to known values to help confirm the identity of an unknown substance.
Realize that melting point can also provide information about the purity of a substance, since impurities typically lower and broaden the melting point range.
Conclude that melting point is a useful tool for characterizing substances rather than indicating properties like electrical conductivity, atomic number, or color.
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