1. When salt dissolves in water, the water is the
A. solute.
B. solvent.
C. solubility.
D. solution.

2. If the solute particles in a solution are large enough
to be seen and to be filtered, the mixture is a (an)
A. colloid.
B. true solution.
C. electrolyte.
D. suspension.

3. In a mixture of salt dissolved in water, the solute is
A. the salt.
B. the water.
C. separated by filtering.
D. the precipitate.

4. All of the following processes will increase the
rate of dissolving a solid in a liquid EXCEPT for
A. powdering the solid.
B. cooling the solution.
C. heating the solution
D. stirring the solution

5. Which of the following describes the carbon
dioxide component of a carbonated beverage?
A. Solvent
B. Precipitate
C. Solution
D. Solute

6. A solution that conducts an electric current is
called a(an)
A. non-electrolyte.
B. saturated.
C. electrolyte.
D. unsaturated.

7. Which of the following would conduct electricity?
A. Wood
B. Salt water
C. Distilled water
D. Sulfur

8. The density of an object is the ratio of
A. mass to inertia.
B. mass to volume
C. volume to inertia.
D. volume to mass.

9. A force of attraction or repulsion due to the
arrangement of electrons in atoms results in a
physical characteristic defined as
A. solubility.
B. conductivity.
C. magnetism.
D. density.

10. Use the drawing below to answer the next question.
A student put some sand, clay, and water into a bottle and shook the bottle. Then she put the bottle down. After two hours, the bottle looked like the drawing above. What can the student conclude based on what she sees in the bottle?
A. The water layer is denser than the layers of clay and sand.
B. The layer of clay is denser than the layers of sand and the water.
C. The layer of sand is denser than the water layer and the layer of clay.
D. The water layer, layer of clay, and layer of sand are all the same density.
11. The tables below list four liquids with four different densities. Use this table to answer the question below.

Liquid Density
1 1.0 g/mL
2 0.8 g/mL
3 0.6 g/mL
4 1.2 g/mL

If the liquids were carefully placed in a container, in what order would the liquids form layers from TOP to BOTTOM?
A. 3, 2, 1, 4
B. 4, 1, 2, 3
C. 1, 2, 3, 4
D. 4, 3, 2, 1

12. Which of the following is NOT a mixture?
A. Air
B. Blood
C. Orange juice
D. Salt

13. Water would be helpful in separating a mixture of
A. sand and salt.
B. iron and sulfur.
C. iron and sand.
D. sand and sulfur.

14. Filtration using the equipment shown above can be used to separate which materials?
A. A mixture of mud and water
B. A solution of salt and water
C. A mixture of alcohol and water
D. A mixture of sand and sawdust

15. Which of the following would be helpful in separating a mixture of iron and sulfur?
A. A magnet
B. A Bunsen burner
C. Filter paper and a funnel
D. Water

Depth of Knowledge Level 2
16. What happens when salt water is boiled?
A. The salt becomes a new compound and evaporates with the water.
B. The water evaporates and the salt remains in the beaker.
C. Both the salt and the water evaporate and leave the beaker.
D. The salt will evaporate from the water and disperse into the environment.

17. A student is asked to design a method to separate a mixture of sand, table salt, and water. Identify the appropriate procedure to be used.
A. filtration then distillation
B. distillation only
C. distillation the filtration
D. filtration only

18. To get salt out of a solution (separating salt from water) we could try...
A. Melting it
B. Evaporating the water so that the salt is left behind
C. Eviscerating the water off
D. Using a magnet

19. If Jo wants to get the iron filings out of some sand, what could she use to separate these two solids?
A. Magnet
B. Evaporation
C. Decantation
D. Filtration

20. I am making lip balm. I have to pour my cooked mixture through some muslin (fabric). What am I doing to the mixture?[I am separating the solid bits from the liquid bits: the liquid can fit through the tiny holes in the muslin fabric]
A. Decanting
B. Mixing
C. Filtering
D. Nothing


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