Multiple choice

A/An ________ is a substance which is composed of a single type of atoms.

  1. molecule

  2. element

  3. compound

  4. mixture
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An element is the basic form of a pure substance that contains only a single type of atoms. For example, copper is made up of only a single type of atoms called copper atoms. Therefore, copper is an element. 

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