West Virginia Barber Written Practice Exam 2025 – Complete Study Resource

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Question: 1 / 400

What is the pure substance made of only one kind of atom?

Compound

Element

The correct answer is "B. Element" because an element is a pure substance made up of only one kind of atom. Elements cannot be broken down into simpler substances by chemical means.

A compound (Choice A) is made up of two or more different types of atoms chemically bonded together.

A mixture (Choice C) is made up of two or more substances that are physically combined and can be separated by physical means.

A molecule (Choice D) is a group of atoms bonded together representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

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Mixture

Molecule

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