Science Lesson 2

A ____ is a physical combination of two or more substances.

• suspension

• mixture

• matter

• solution

Mixtures that have parts that are not uniformly mixed together are called

• homogeneous

• heterogeneous

Smoke is an example of a _____ because its suspended particles are small enough that they do not settle.

• colloid

• suspension

• positive

• negative

Explain the difference between a homogeneous and a heterogeneous mixture.

Rebecca made a mixture of raisins, nuts, and dried fruit for a snack. Which kind of mixture was Rebecca’s snack?

• solution

• colloid

• heterogeneous mixture

• suspension

When salt is placed in a glass of water and dissolves, it is an example of a ________

While sitting in your house, you notice that there are particles of dust floating in the air. These particles of dust that are suspended in the air are an example of a(n) ____.

• solid

• solution

• aerosol

• gas

Which mixture is most likely a solution?

• muddy water

• cranberry juice

• potting soil

• milk

How are mixtures formed and seperated?

A mixture of gravel and sand is an example of a

• homogeneous mixture

• heterogeneous mixture