Remember Matter is anything that has mass (measured in kilograms) and occupies a volume (measured in liters). We can find stuff in three different states: solid, liquid and gas. If you want an activity to review these concepts (click on image). 
Remember Some of the material properties are: hardness, toughness, elasticity, waterproofing and electrical conduction. To determine which material is best suited to build an object, we must know its characteristics or properties. You may want to perform the following activity on the material properties (click on image).
If you want to assess your knowledge of Unit 7 of CM, I challenge you to perform this little test (click on image).
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