Mixtures & Solutions Week 1 Review!

What is a mixture?

• only gravel and water mixed together

• a solution of 2+ materials

• a combination of 2+ materials

• salt and water mixed together

Check all that are mixtures:

• salt and water

• powder and water

• cake batter

• cereal and milk

What is a solution?

• a combination of 2+ materials when one dissolves

• any combination of 2+ materials

• powder and water

• juice and crackers

Check all that are solutions:

• salt and water

• dissolvable vitamins or tablets

• powder and water

• coffee and sugar

We mixed gravel and water. What happened?

• The gravel dissolved.

• The gravel floated on the water.

• The gravel sank to the bottom.

We mixed powder and water. What happened?

• The powder dissolved.

• The powder just floated on top.

• The powder just sank to the bottom.

• The powder made cloudy water and sank to the bottom.

We mixed salt and water. What happened?

• The salt dissolved.

• The salt sank to the bottom.

• The salt completely disappeared from the universe.

Check the materials we used in class to separate mixtures:

• filter

• screen

• butterfly net

• water bottle

The mass of the salt is added to the mass of the water in a salt solution.

• True

• False

You can separate a salt solution by...

• scooping out the salt

• evaporating the water

• using a screen

• using a filter