Each Element and Compound Is a Pure Substance

question 115

Multiple Choice

Each element and compound is a pure substance. However, most materials are neither single elements nor single compounds. Instead, they are mixtures of these simple substances, with one substance mingled with another. Thus, gasoline is a mixture of hydrocarbons and additives blended together to achieve efficient combustion. Loretta Jones and Peter Atkins, Chemistry: Molecules, Matter, and Change, 4^th ed.

• A) Nonargument.
• B) Argument, conclusion: They are mixtures ... one substance mingled with another.
• C) Argument, conclusion: Most materials are neither ... nor single compounds.
• D) Argument, conclusion: Each element and compound is a pure substance.
• E) Argument, conclusion: Gasoline is a mixture ... achieve efficient combustion.

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