1. Which of the following would likely form a heterogeneous mixture? (Points : 3)
sand and water
sugar and water
baking soda and water
salt and water
2. Because the mud in muddy water eventually settles out, the muddy water is a __________. (Points : 3)
colloid
solution
suspension
3. Refer to the following illustration to answer Question 3.
In the illustration, which solute will dissolve first?
(Points : 3)
The solute in Tank B will dissolve first.
The solute in Tanks A and B will dissolve at equal rates.
The solute in Tank A will dissolve first.
4. In the Solubility lab, what did you change the temperature of? (Points : 3)
solute
entire solution
solvent
5. If solid material settles out of a mixture over time, the unknown mixture is likely a __________. (Points : 3)
solution
suspension
colloid
homogenous
6. What does the rate of solution measure? (Points : 3)
how fast a substance precipitates
how much of a substance dissolves
how fast a substance dissolves
how much of a substance precipitates
7. Separating out solute from a solvent through evaporation is a __________ process. (Points : 3)
nuclear
physical
chemical
8. In the Mixtures lab, you waited to see if the liquid would form lumpy or fluffy masses, which would indicate it was a __________. (Points : 3)
homogenous mixture
solution
suspension
colloid
9. __________ is known as the universal solvent because it dissolves more solutes than any other solvent. (Points : 3)
Hydrochloric acid
Salt
Vinegar
Water
10. What is solubility? (Points : 3)
Solubility is how much solid only will dissolve in liquid only.
Solubility is how much solute will precipitate out of solvent.
Solubility is how much solute will dissolve in solvent.
Solubility is how much solvent will dissolve in solute.
11. Opening a soda bottle illustrates how a decrease in pressure will __________ the amount of gas that can be dissolved in water. (Points : 3)
not change
decrease
increase
12. Which of the following does not affect the rate of solubility? (Points : 3)
temperature
pressure
weight
surface area
13. Refer to the following illustration to answer Question 13.
Which type of mixture could this illustration represent?
(Points : 3)
not enough information to tell
homogenous mixture
heterogeneous mixture
14. Refer to the following illustration to answer Question 14.
Which type of mixture could this illustration represent?
(Points : 3)
heterogeneous mixture
not enough information to tell
homogeneous mixture
15. You can increase the rate solute dissolves in solvent by __________. (Points : 3)
using more particles of solute
using larger particles of solute
crushing particles of solute
lowering the temperature of the solvent
