WorksheetsGases - Solutions - Acids and Bases
Total questions: 20
Worksheet time: 14mins
Name
Class
Date
1.
Based on the solubility chart, which of the listed salts is the most soluble at 40°C?
a)
KCl
b)
KClO3
c)
KNO3
d)
Pb(NO3)2
2.
What conclusion can be made using this solubility curve?
a)
Decreasing temperatures always increases solubility
b)
Increasing temperatures always increases solubility
c)
Increasing temperatures usually increases solubility
d)
Temperature has no affect on solubility
3.
Which compound listed demonstrated the GREATEST increase of solubility as a result of an increase in temperature?
a)
KNO3
b)
KCl
c)
NaCl
d)
KClO3
4.
Consider the salts represented on the solubility curves displayed as line graphs. In all cases the salts are which part of an aqueous solution?
a)
precipitate
b)
solvent
c)
solute
d)
concentrate
5.
What property do all three of these common household substances have in common?
a)
they are all basic
b)
they taste sour
c)
they have a pH below 7
d)
they all turn litmus paper red
6.
What does this solubility curve show?
a)
Solubility increases as temperature increases
b)
Solubility decreases as temperature decreases
c)
Solubility decreases as concentration increases
d)
Solubility is not affected by temperature
7.
If you have a solution that is very acidic with a pH of 3.5, what can you do to raise the pH?
a)
add more acid
b)
add more water
c)
increase the temperature
d)
add a base
8.
When Sally tested an unknown substance, her red litmus paper turned blue but her blue litmus paper did not change color. What is the solution?
a)
Acid
b)
Base
c)
neutral
d)
world peace
9.
Palmer puts 10 grams of salt in 100 grams of water. He then puts 50 grams of salt in 100 grams of water. Compare the concentrations of the two solutions
a)
both mixtures are acids
b)
both mixtures are bases
c)
the first solution is more diluted while the second one is more concentrated
d)
the first one is more concentrated while the second one is more diluted
10.
According to the pH scale, which of the following would be true?
a)
baking soda is a weak base while drain cleaner is a strong base
b)
lemon is a weaker acid than a banana
c)
tomato and soap are acidic
d)
vinegar is less acidic than an apple
11.
Which of the following would NOT be a way to speed up the rate of solubility of rock salt?
a)
stir it
b)
heat the water
c)
crush the salt
d)
cool the water
12.
Which characteristics describe a base?
a)
sour, indicator turns red, pH less than 7, produces hydrogen ions (H+)
b)
bitter, slippery, indicator turns blue, pH greater than 7, produces hydroxide ions (OH-)
c)
neutral, pH of 7
d)
sour, indicator turns red, pH greater than 7
13.
Which characteristics describe an acid?
a)
sour, indicator turns red, pH less than 7, produces hydrogen ions (H+)
b)
bitter, slippery, indicator turns blue, pH greater than 7, produces hydroxide ions (OH-)
c)
neutral, pH of 7
d)
sour, indicator turns red, pH greater than 7
14.
What substance would do the best job of cleaning pots and pans?
a)
a substance with a pH of 7
b)
a substance with a pH of 2
c)
a substance with a pH of 4
d)
a substance with a pH of 8
15.
What might happen if you mixed a strong acid with an equally strong base?
a)
explosive chemical reaction
b)
a pH neutral substance
c)
the base would destroy the acid
d)
the acid would destroy the base
16.
An extremely strong base would have a pH of...
a)
1
b)
7
c)
9
d)
14
17.
An extremely strong acid would have a pH of...
a)
1
b)
7
c)
9
d)
14
18.
A weak acid would have a pH of...
a)
1
b)
7
c)
6
d)
14
19.
A weak base would have a pH of...
a)
8
b)
7
c)
6
d)
14
20.
A neutral substance would have pH of...
a)
8
b)
7
c)
6
d)
14
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