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Acids/bases solutions G9

Total questions: 36

Worksheet time: 36mins

Name
Class
Date
1.

Acids are substances that release positively charges _________ ions in water

a)

Hydrogen

b)

Hydroxide

c)

Sodium

d)

Chloride

2.

What is the purpose of an "indicator"?

a)

changes color if a chemical reaction occurs

b)

changes color if a physical change occurs

c)

changes color in the presence of an acid or base

d)

changes color when a salt dissolves in water

3.

The table shows the pH of several solutions. Which solution has the greatest concentration (amount) of H+ ions?

a)

vinegar

b)

milk

c)

water

d)

bleach

4.

Ca(OH)2 is an example of a(n)

a)

Acid

b)

Base

c)

Neutral substance

d)

Salt

5.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
6.
All solutions that fall between 0 and 6.9 are
a)
Acids
b)
Bases
c)
Neutral
d)
Phytoplankton
7.
Which is most acidic?
a)
milk
b)
Lemon Juice
c)
bleach
8.
This image represents
a)
Neutralization reaction
b)
synthesis
c)
decompostion
d)
single displacement
9.
What is the range of pH values in a basic solution?
a)
0-6
b)
8-14
c)
7
d)
0-14
10.
What is the name of this ion: H3O+?
a)
helium ion
b)
hydrogen ion
c)
hepatic ion
d)
hydronium ion
11.
A way to measure the concentration of hydrogen ions in a solution is to use a(n) _____.
a)
indicator
b)
litmus
c)
pH scale
d)
acid
12.
If a solution is neither acidic or basic it has a pH of _____________.
a)
1
b)
13
c)
6
d)
7
13.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
14.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
15.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
16.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
17.
Which solution releases H+ in solution?
a)
Base
b)
Acid
c)
Buffer
d)
Water
18.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
19.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
20.
This substance releases OH- into solution
a)
Acid
b)
Base
c)
Neutral
21.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
22.

Which of the following pH values represents the greatest concentration of -OH ions?

a)

3

b)

6

c)

9

d)

1

23.

Which of the following pH values represents the greatest concentration of H+ ions?

a)

3

b)

6

c)

9

d)

1

24.
Feels slippery.
a)
Acids
b)
Bases
c)
All
25.

As one moves down the pH scale from 14 to 1, what happens to the concentration of H+ in the solution?

a)

concentration of H+ decreases

b)

concentration of H+ increases

c)

concentration of H+ stays the same

26.

A substance that is a base has more OH- ions than H+ ions.

a)

True

b)

False

27.
Is this substance acidic, basic, or neutral?
a)
Acidic
b)
Basic
c)
Neutral
28.
HNO3 is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
29.
What might happen if you mixed a strong acid with an equally strong base?
a)
You would see an explosive chemical reaction.
b)
The acid would destroy the base.
c)
The base would destroy the acid.
d)
You'd wind up with a pH-neutral substance.
30.
pH stands for:
a)
Potency of hydrogen
b)
Plurality of hydrogen
c)
Potential of hydrogen
d)
Pleurisy of hydrogen
31.
A neutralization reaction will always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
32.
What is the pH of an acid and a base respectively?
a)
pH 3 & 7
b)
pH 9 & 11
c)
pH 5 & 8
d)
pH 2.35 & 5.98
33.

Which pH could belong to a strong acid?

a)

14

b)

8

c)

5

d)

1

34.

Which pH could belong to a strong alkali?

a)

14

b)

8

c)

5

d)

1

35.

Which pH could belong to a weak acid?

a)

14

b)

8

c)

5

d)

1

36.

Which pH could belong to a weak alkali?

a)

14

b)

8

c)

5

d)

1

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