Introduction to Molecules
A worksheet for 6th graders to learn about molecules, their composition, and their importance in everyday life.
Includes
Standards
Topics
Introduction to Molecules
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability.
1. What is the smallest unit of a chemical compound that retains its chemical properties?
Atom
Molecule
Element
Mixture
2. How many atoms of hydrogen are in a single water molecule (H2O)?
One
Two
Three
Four
3. A molecule is formed when two or more join together.
4. Water is a common example of a .
5. All atoms are molecules.
True
False
6. Carbon dioxide is made up of one carbon atom and two oxygen atoms.
True
False
7. What is the difference between an atom and a molecule?
8. Observe the image of the water molecule. Label the atoms present.

Atom 1:
Atom 2:
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