Multiple Choice
Which of the following is an example that includes evidence of a chemical change?
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1. Intro to General Chemistry
Chemical Properties
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Which of the following best describes a characteristic property of a substance?
A
A property that only appears when a substance is mixed with another substance.
B
A property that is shared by all substances, such as being solid at room temperature.
C
A property that is unique to a substance and can be used to identify it, such as its boiling point or density.
D
A property that changes depending on the amount of substance present, such as mass or volume.
Verified step by step guidance1
Understand that a characteristic property of a substance is a property that helps to uniquely identify that substance and does not depend on the amount of substance present.
Recognize that properties like boiling point and density are intrinsic to a substance and remain consistent regardless of sample size, making them characteristic properties.
Note that properties which change with the amount of substance, such as mass or volume, are called extensive properties and are not characteristic properties.
Also, properties that only appear when substances are mixed or properties shared by all substances (like being solid at room temperature) are not unique and therefore not characteristic properties.
Conclude that the best description of a characteristic property is one that is unique to a substance and can be used to identify it, such as boiling point or density.
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