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WorksheetsAcids/Bases review
Total questions: 30
Worksheet time: 2hrs 15mins
Name
Class
Date
1.
How can a scientist safely tell whether an unknown solution is salt in water or sugar in water?
a)
By tasting the solution
b)
By smelling the solution
c)
By testing the electrical conductivity of the solution
d)
By filtering the solution
2.
What is one way to increase the solubility of sugar in water?
a)
Heat the water.
b)
Chill the water.
c)
Increase the amount of sugar.
d)
Decrease the amount of water.
3.
In a water solution, how do acids differ from bases?
a)
Acids form hydrogen ions(H+), while bases form hydroxide ions (OH-)
b)
Acids turn litmus blue, while bases turn litmus red.
c)
Acids form salts, but bases do not.
d)
Hydrogen ions (H+)remain dissolved, by hydroxide ions (OH-) do not.
4.
The pH scale measures...
a)
...the strength of an acid.
b)
...the strength of hydrogen ions.
c)
...the concentration of hydrogen ions.
d)
...the concentration of an acid
5.
When a few spoonfuls of sugar are mixed into a cup of water, sugar is the..
a)
..acid.
b)
...base.
c)
...solvent.
d)
...solute.
6.
Acids are __________, which means they "eat away" at other materials.
a)
transitional metal
b)
alkiline
c)
flammable
d)
corrosive
7.
________ compounds conduct electricity.
a)
Molecular
b)
Ionic
c)
Metallic
d)
Radioactive
8.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
9.
A solution with a pH of 7 is________
a)
increasing
b)
neutral
c)
decreasing
d)
apple juice
10.
If you neutralize an acid with a base what will be produced?
a)
Sugar and water
b)
Sugar and salt
c)
Salt and water
d)
Water
11.
Name HF
a)
hydrofluoric acid
b)
Hypofluoric acid
c)
hydrogen fluorine acid
12.
HNO2
a)
hydronitrogen
b)
hydrogen nitrogen oxygen
c)
nitrous acid
13.
NaOH
a)
sodium oxide
b)
sodium hydrogen
c)
sodium hydroxide
14.
H3PO4
a)
hydrophsophorus acid
b)
phosphoric acid
c)
hydrogen phosphorous
d)
phosphori hydroxide
15.
Ca(OH)2
a)
calcium hydroxide
b)
calcium oxygen hydrogen
c)
calcium oxide
16.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
17.
Tastes bitter.
a)
Acids
b)
Bases
c)
Salts
d)
All
18.
Turns litmus blue.
a)
Acids
b)
Bases
c)
Salts
d)
All
19.
Electrolyte
a)
Acids
b)
Bases
c)
Salts
d)
All
20.
Feels slippery.
a)
Acids
b)
Bases
c)
All
21.
Forms hydroxide ions (OH-) in water
a)
Acids
b)
Bases
c)
All
22.
Which is most acidic?
a)
milk
b)
Lemon Juice
c)
bleach
23.
This image represents
a)
Neutralization reaction
b)
synthesis
c)
decompostion
d)
single displacement
24.
An organic substance that changes color in the presence of an acid or base
a)
indicator
b)
inhibitor
c)
catalyst
d)
salt
25.
Pollution causes the pH of rain water fall below 6. What is such type of rain called?
a)
Acid rain
b)
polluted rain
c)
low pH rain
26.
A solution containing more solute than a saturated solution at a given temperature is ____.
a)
unsaturated
b)
saturated
c)
supersaturated
27.
Oil molecules are nonpolar. What kind of solvent is required to remove an oil stain?
a)
saturated
b)
unsaturated
c)
polar
d)
nonpolar
28.
The solubility of gases is lower in ___ temperatures
a)
constant
b)
higher
c)
lower
d)
absolute zero
29.
is this a base or acid
a)
base
b)
acid
c)
neither
d)
neutral
30.
is this object acidic or base
a)
Acidic
b)
Base
c)
neither
d)
neutral
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