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8th Grade Chapter 9-Solutions, Acids & Bases Study Guide



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

The substance being dissolved to form a solution is the ____.
a.
solvent
c.
precipitate
b.
solute
d.
mixture
 

 2. 

The atmosphere of Earth is an example of a ____ solution.
a.
liquid-liquid
c.
gas-gas
b.
gas-liquid
d.
solid-liquid
 

 3. 

A solution that contains all the solute it can hold under the given conditions is ____.
a.
saturated
c.
dilute
b.
unsaturated
d.
supersaturated
 

 4. 

A solution that contains a large amount of solute compared to solvent is described as ____.
a.
dilute
c.
unsaturated
b.
heterogeneous
d.
concentrated
 

 5. 

Which of the following properties is NOT characteristic of acidic solutions?
a.
has a sour taste
c.
feels slippery
b.
conducts electricity
d.
is corrosive to certain metals
 

 6. 

Stainless steel is an example of a ____ solution.
a.
liquid-solid
c.
solid-solid
b.
solid-liquid
d.
gas-solid
 

 7. 

Which of the following types of substance would be least likely to dissolve in water?
a.
a nonpolar molecule like cholesterol
b.
a polar molecule like ethyl alcohol
c.
an ionic compound, such as magnesium chloride
d.
a polar molecule like the fruit sugar, fructose
 

 8. 

The solubility of sodium chloride (table salt) in water at 10°C is 32 g in 100 g of water. If 14 g of sodium chloride are dissolved in 50 g of water at 10°C, the solution is ____.
a.
saturated
c.
concentrated
b.
dilute
d.
acidic
 

 9. 

The amount of table sugar that will dissolve in 1 kg of water can be increased by ____.
a.
stirring the solution
b.
heating the solution
c.
breaking the sugar into smaller pieces
d.
doing any of the above
 

 10. 

A solution with a pH of 13 is a ____.
a.
weak acid
c.
strong acid
b.
weak base
d.
strong base
 

 11. 

How does a solution with a pH of 2 compare to a solution with a pH of 1?
a.
The pH 2 solution is two times more acidic than that with a pH of 1.
b.
The pH 1 solution is ten times more acidic than that with a pH of 2.
c.
The pH 1 solution is two times more basic than that with a pH of 2.
d.
The pH 2 solution is ten times more acidic than that with a pH of 1.
 
 
nar001-1.jpg
Figure 1
 

 12. 

According to the solubility graph in Figure 1, which compound has the greatest solubility in water at 75ºC?
a.
sodium nitrate
c.
potassium chlorate
b.
sodium chloride
d.
potassium nitrate
 
 
nar002-1.jpg
Figure 2
 

 13. 

The solution shown in Figure 2 is an example of a which type of solution?
a.
dilute
c.
unsaturated
b.
saturated
d.
heterogeneous
 
 
nar003-1.jpg
Figure 3
 

 14. 

Figure 3 shows a sample of matter at the molecular level. What type of matter is shown?
a.
solid
c.
element
b.
mixture
d.
compound
 

 15. 

Which of the following items would you use to separate a mixture of sand and water?
a.
mc015-1.jpg
c.
mc015-3.jpg
b.
mc015-2.jpg
d.
mc015-4.jpg
 

 16. 

A water molecule can produce a hydrogen ion and a hydroxide ion. Using this information, how would you classify water?
a.
as an acid
c.
as an acid and a base
b.
as a base
d.
as neither an acid or a base
 

Matching
 
 
Match each item with the best description below.
a.
acid
i.
H3O+
b.
base
j.
neutralization
c.
solution
k.
indicator
d.
solubility
l.
heterogeneous mixture
e.
solute
m.
insoluble
f.
solvent
n.
precipitate
g.
dilute
o.
OH-
h.
concentrated
 

 17. 

reaction between an acid and a base
 

 18. 

amount of substance that can dissolve in 100 g of water
 

 19. 

solid that falls out of a solution
 

 20. 

produces hydronium ions in water
 

 21. 

formula for the hydronium ion
 

 22. 

another name for a homogenous mixture
 

 23. 

formula for the hydroxide ion
 

 24. 

not uniform in composition
 

 25. 

oil in water
 

 26. 

larger or largest part of a solution
 

 27. 

large amount of solute per given amount of solvent
 

 28. 

turns different colors in acids and bases
 

 29. 

produces hydroxide ions in water
 

 30. 

substance that dissolves to form a solution
 

 31. 

small amount of solute in a given amount of solvent
 
 
Match each type of substance with the correct description below.
a.
acid
c.
both
b.
base
d.
neither
 

 32. 

solution with a pH above 7
 

 33. 

neutral solution
 

 34. 

conducts electricity in water
 

 35. 

tastes bitter
 

 36. 

solution with a pH of 3
 

 37. 

corrosive
 

 38. 

solution feels slippery
 

 39. 

changes the color of indicators
 

 40. 

reacts with metals, producing hydrogen gas
 

 41. 

tastes sour
 

 42. 

produce hydronium ions when dissolved in water
 

 43. 

produce hydroxide ions when dissolved in water
 



 
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