Key definitions:

Density: how much mass is in a given unit of volume, or how much stuff is in a given space

Polarity: the charge of a substance

Supplies:

• A glass or see through jar 

• Food coloring

• Water

• Vegetable oil

• Salt

Related STEM Careers:

Check out our blog post about Environmental Scientists and how they study and protect the world around us.

Related STEM History:

If you are interested in learning more about matter and what it’s made up of, read our overview of the Atomic Model!