Unit 2 Chapter 2 Test 5.5

1. A solid that can dissolve into a liquid is considered...

• a substance
• insoluble
• soluble
• evaporated

2. When a substance does not dissolve it is called...

• a. indissolvable
• b. soluble
• c. liquid water
• d. insoluble

3. Would this model show a soluble solid or a solid that is insoluble?

• insoluble
• soluble

5. Which model could represent the molecules of cinnamon mixed with the molecules of water?

• 
• 

6. Molly mixes sugar into a glass of hot water and the sugar dissolves. She wonders if the sugar is still there since she cannot see it. What can she do to figure out if the sugar is still there?

• a. shake the glass of water
• b. stir the water
• c. taste the water
• d. spill the water out of the glass

7. True or False: The hotter water is, the slower sugar will dissolve in it.

• True
• False

8. True or False: When sand is added into a container of water, it settles in the bottom because the sand is insoluble.

• True
• False

9. True or False: Water dissolves everything.

• True
• False

10. What happens when molecules of a solid are attracted to molecules of a liquid?

• The molecules of the solid stay clustered together separate from the molecules of the liquid.
• The molecules of the solid disappear.
• The molecules of the solid and liquid spread around and attach to each other to form a new mixture.
• Nothing happens.

11. What happens when the molecules of a solid aren't attracted to the molecules of a liquid?

• The solid dissolves.
• The molecules of the solid stay clustered together separate from the molecules of the liquid.
• The molecules of the solid and liquid spread around and attach to each other to form a new mixture.
• The molecules of the solid disappear.