Sci reviewer

1.  Mixtures are formed by two or more different substances that are physically combined. 

• True

• False

 

2.  A mixture is only composed of solids.

• True

• False

3.  The components of a mixture should be in the same state of matter.

• True

• False

Sugar undergoes physical changes when mixed with water.

• True

• False

6.  A sugar-water mixture is a cloudy mixture like a cornstarch-water mixture.  

• True

• False

7.  Air is a mixture of different gases.

• True

• False

 

8.  Water is made of two hydrogen atoms chemically bonded to one oxygen atom.  It is a mixture. 

• True

• False

9.  A solution is a mixture that contains a solute and a solvent. 

• True

• False

10.  In a cornstarch-water mixture, the particles of cornstarch will settle at the bottom when left undisturbed. 

• True

• False

Dissolving salt in water is an example of a chemical change. 

• True

• False