West Virginia Barber Written Practice Exam

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.