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ACID AND BASE

Total questions: 42

Worksheet time: 1hrs 20mins

Name
Class
Date
1.

Which of these pH values represent an acid?

a)

4

b)

8

c)

10

d)

12

2.

Which of the following are properties of acids?

a)

They conduct electricity when dissolved in water

b)

They taste sour

c)

They react with metals to produce hydrogen gas

d)

All of the answer choices are correct

3.

Which of the following is an acid?

a)

vinegar

b)

bleach

c)

sugar in water

d)

starch in water

e)

toothpaste in water

4.

An acid is a solution that contains __________ ions dissolved in water.

a)

positive

b)

negative

5.

Which of the following is a property of a base?

a)

bitter taste

b)

reacts with metals

c)

salty

d)

sour taste

6.

Bases have many uses. They are mainly used to make

a)

cleaning products

b)

soaps

c)

concrete

d)

all of the answer choices

7.

All bases have a sour taste.

a)

True

b)

False

8.

Which of the following pH values represents a base?

a)

2.1

b)

4.6

c)

6.8

d)

8.1

9.

Bases turn blue litmus paper red.

a)

True

b)

False

10.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
11.
Which of the following statements is correct?
a)
Blue litmus paper turns red when placed in a base.
b)
Red litmus paper turns blue when placed in a base.
c)
Blue litmus paper stays blue when placed in an acid.
d)
Red litmus paper stays red when placed in a base.
12.
 Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water
13.
Values from 0-14 that determine the acidity of a solution
a)
Punnett Square
b)
Matrix
c)
pH scale
d)
Math number line 
14.
Ammonia has a pH of 12.  Ammonia is __________.
a)
an acid
b)
a base
c)
an element
d)
a metal
15.
When dissolved in water, bases produce:
a)
acids
b)
salts
c)
hydrogen ions
d)
hydroxide ions
16.

What completely ionizes in solution?

a)

Weak acids

b)

Strong acids

c)

Strong Salts

d)

Neutral salts

17.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
18.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
19.
Acids react with
a)
water to produce bases and salts
b)
salts to produce bases and water
c)
neither bases, salts nor water
d)
bases to produce salts and water
20.
Releases hydrogen in an aqueous solution.
a)
base
b)
strong base
c)
acid
d)
weak base
21.
Which of the following pH numbers indicates a neutral substance?
a)
1
b)
5
c)
7
d)
14
22.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
23.

Reaction between acid and alkali producing salt and water:

a)

Combustion

b)

Neutralization

c)

Precipitation

d)

Decomposition

24.

In a water solution, how do acids differ from bases?

a)

Acids form salts, but bases do not

b)

Acids turn litmus blue, while bases turn litmus red

c)

Acids form hydrogen ions (H+), while bases form hydroxide ions (OH-)

d)

Bases form salts, but acids do not

25.
What methods can you use to measure the pH of a solution?
a)
Observing color or clarity
b)
Measuring mass or volume
c)
Measuring density or electrical conductivity
d)
Using acid base-indicators or pH meters
26.

Concentration is

a)

the amount of solute in the solvent

b)

the amount of solvent in the solute

c)

density

d)

particle size

27.

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt


Solution 2:

500 mL of water

90 g of salt

a)

Solution 1

b)

Solution 2

c)

They have the same concentration

d)

I have no idea

28.

In order to dilute a solution, you need to

a)

add more of the solid

b)

add more water

c)

find the mass

d)

find the volume

29.

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt


Solution 2:

500 mL of water

60 g of salt

a)

Not enough information to tell

b)

Solution 1

c)

Solution 2

d)

They are equally diluted

30.

Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water

a)

30

b)

25

c)

20

d)

15

31.
How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? 
a)
2
b)
3
c)
4
d)
6 
32.
What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.0011 M
c)
1.052 M
d)
0.062 M
33.
How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?
a)
0.625 g NaCl
b)
625 g NaCl
c)
36.5 g NaCl
d)
0.04 mol NaCl
34.

Molality (m) = moles of solute / _________________________.

a)

kilogram of solvent

b)

kiloliter of solvent

c)

kilometer of solvent

d)

ounces of solvent

35.

What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?

a)

5 mol/kg. solvent

b)

4 mol/kg solvent

c)

3 mol/kg. solvent

d)

2.5 moles /kg solvent

36.

molality is defined as ________________________

a)

the moles of solute per kilogram of solvent

b)

moles of solute per liter of solution

c)

mass of solute/ mass of solution

d)

mass of solute/ mass of solvent X 100

37.
Total number of mol fraction for all component in the solution is equal to
a)
1.0
b)
0.95
c)
0.50
d)
2.0
38.
Calculate mol fraction of H2O in 1.33 molal NaOH solution.
a)
0.56
b)
0.76
c)
0.98
d)
0.84
39.
What is the molarity of 4.0 g of NaCl (Molar mass=58.45) in 3,800 mL of solution?
a)
0.018 M
b)
0.001M
c)
1.052 M
d)
0.062 M
40.
Calculate the mole fraction of benzene (C6H6) in a solution of 46.8 g benzene and 36.8 g of toluene (C7H8).
a)
0.4
b)
0.6
c)
0.7
d)
0.5
41.

A measure of how much a given substance is mixed with another substance.

a)

dissolve

b)

homogeneous mixture

c)

solubility

d)

concentration

42.

A solution that contains the maximum amount of solute the solution can hold at a given temperature and pressure.

a)

unsaturated solution

b)

saturated solution

c)

solubility

d)

solution

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