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Worksheets

Solutions and Acids/Bases

Total questions: 58

Worksheet time: 2hrs 16mins

Name
Class
Date
1.

Which of the following refers to substances that do not mix together and look different throughout?

a)

homogeneous mixture

b)

solution

c)

heterogeneous mixture

d)

solubility curve

2.

Which of the following refers to the substance that is being dissolved in a solution?

a)

solvent

b)

solute

c)

mixture

3.
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
4.

What does this solubility curve show?

a)

Solubility increases as temperature increases

b)

Solubility decreases as temperature increases

c)

Solubility decreases as concentration increases

d)

Solubility is not affected by temperature

5.

The substance that does the dissolving

a)

Solute

b)

Solvent

c)

Solution

d)

Miscibility

6.

Sugar dissolved in water is an example of a

a)

Homogeneous Mixture

b)

Heterogeneous Mixture

7.

Which is an example of a solution?

a)

Salt and Sugar

b)

Salt Water

c)

Jelly beans

d)

Concrete

8.

What does it mean to be an unsaturated solution?

a)

A solution with more solute than solvent

b)

A solution with less than the maximum amount of solute

c)

A solution with the perfect balance of solutes and solvents

d)

A solution with extra solute sitting at the bottom of the solvent

9.

Which substance is MOST soluble at 90 ºC?

a)

Solid A

b)

Solid B

c)

Solid C

10.

Which solute is least soluble at 90 ⁰C?

a)

solid A

b)

solid B

c)

solid C

11.

Define solubility

a)

how much pressure is in an object has

b)

Surface Area per Temperature

c)

how much solute can dissolve in a solvent at a certain temperature

d)

it is a made up word

12.

Which of the following will typically allow for more solute than normal to be dissolved in a solvent?

a)

freezing the solution

b)

shaking the solute

c)

cooling the solution

d)

heating the solution

13.

Which solute is LEAST soluble at 0 ºC?

a)

A

b)

B

c)

C

d)

D

14.

Increasing the temperature will increase the kinetic energy (movement) of particles, therefore increasing the collisions between particles.

a)

false

b)

true

15.

Which of the following should be done to make the solute dissolve faster in the solvent?

a)

stir the solute

b)

freeze the solute

c)

decrease the temperature of the solvent

d)

increase the particle size of the solute

16.

How much KNO3 solute is saturated at 40 degrees?

a)

75

b)

55

c)

65

d)

85

17.

How much C12H22O11 solute is saturated at 40 degrees?

a)

240

b)

220

c)

230

d)

250

18.

How much Ce2(SO4)3 solute is saturated at 80 degrees?

a)

20

b)

15

c)

30

d)

2

19.

How much NaBr solute is saturated at 70 degrees?

a)

110

b)

120

c)

130

d)

140

20.

At what temperature can you fully dissolve 120g of NaBr?

a)

70

b)

20

c)

110

d)

You cannot determine this

21.

What type of a solution is 100g KNO3 at 40ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

22.

What type of a solution is 260g sugar at 50ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

23.

What type of a solution is 25g NaCl at 70ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

24.
Which of these solutes does not increase in solubility as temperature rises?
a)
NH3
b)
NaNO3
c)
KNO3
d)
NaCl
25.

A substance is found to have the following characteristics:


Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water


In what category would the substance be classified?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

26.

HNO2

a)

a base

b)

a salt

c)

an acid

d)

an ionic compound

27.

HF is...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

28.

KOH is ...

a)

an acid

b)

a base

c)

a salt

d)

an ionic compound

29.
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.
30.
Which of the following statements about acids is true?
a)
They taste sweet.
b)
They taste sour.
c)
They have a pH between 8-14.
31.
Bases are what range on the pH scale?
a)
0-6.99
b)
7
c)
7.1-14
d)
0-14
32.
Acids are what range on the pH scale?
a)
0-14
b)
0-6.99
c)
7
d)
7.1-14
33.
7 on the pH scale means that it is...
a)
Acidic
b)
Basic
c)
Neutral
34.
What color does acid turn litmus paper?
a)
It turns litmus paper purple.
b)
It turns red litmus paper blue.
c)
It turns blue litmus paper blue.
d)
It turns blue litmus paper red.
35.
Drain cleaner has a pH of 13. What is drain cleaner?
a)
An acid.
b)
A strong base.
c)
Neutral.
d)
A weak base.
36.
A pH scale is...
a)
A  corrosive substance that says a substance is an acid.
b)
An indicator that tells if a substance is an acid or base. 
c)
A blue litmus paper.
d)
A red litmus paper.
37.
What are properties of acids?
a)
Bitter, slippery, ph above 7
b)
Sour, reacts with metals, ph below 7
c)
Sour, reacts with metals, ph above 7
d)
Bitter, ph of 7, does not react with metals
38.
What are properties of a base?
a)
Slippery, bitter, does not react with metals, pH above 7.
b)
Slippery, bitter, reacts with metals, pH below 7.
c)
Sour, reacts with metals, pH below 7
d)
Sour, reacts with metals, pH above 7.
39.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
40.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
41.

Which of the following is a property of bases?

a)

Turns blue litmus paper red

b)

Tastes sour

c)

Feels slippery

d)

Releases H+ ions in water

42.

What happens to the solubility of most solids in water as temperature increases?

a)

It decreases

b)

It remains the same

c)

It increases

d)

It fluctuates randomly

43.

Which of the following substances would conduct electricity if dissolved in water to form a solution?

a)

C6H12O6

b)

CH4

c)

KI

d)

CO2

44.

A conductivity tester is placed in a solution of water and an unknown solute. The bulb doesn't light up. What can you determine about the unknown solute?

a)

It is an ionic compound.

b)

It is a metallic compound.

c)

It is a covalent compound.

d)

Not enough information is given to answer this question.

45.

Which solution will have a higher conductivity?

a)

Left one, since it is concentrated

b)

Right one, since it is concentrated

c)

Left one, since it is diluted

d)

Right one since it diluted.

46.

A light bulb connected to two electrodes is immersed in the following solutions. Which one will make the light bulb light up the brightest?

a)

1 g of sugar in 1 cup of water

b)

1 g of salt in 1 cup of water

c)

10 g of salt in 1 cup of water

d)

10 g of sugar in 1 cup of water.

47.

When the amount of solute increases, the concentration and conductivity (a)   . (One word)

48.

What can you conclude based on the diagram? There could be more than one correct answer.

a)

Liquid A a concentrated ionic solution

b)

Liquid B is a concentrated ionic solution

c)

Liquid A is a concentrated covalent solution.

d)

Liquid B is a concentrated covalent solution.

49.

A beaker of uncovered salt water is left in the lab. What happens to the conductivity after a week?

a)

The conductivity decreases since the concentration decreases as the water evaporates

b)

The conductivity increases, since the concentration decreases as the water evaporates.

c)

The conductivity decreases, since the concentration increases as the water evaporates.

d)

The conductivity increases, since the concentration increases as the water evaporates.

50.
What is a substance that is dissolved in another substance? 
a)
solution
b)
solute
c)
solvent
d)
compound
51.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
52.

Which of the following substances increases the pH of a solution when dissolved in water?

a)

Sodium hydroxide (NaOH)

b)

Hydrochloric acid (HCl)

c)

Carbon dioxide (CO2)

d)

Sucrose (C12H22O11)

53.

Which factor is crucial in determining the strength of an acid or base in water?

a)

The temperature of the water

b)

The pH level of the solution

c)

The dissociation of its molecules in the solution

d)

The color of the solution

54.

What is the primary characteristic of a non-electrolyte solution?

a)

It cannot conduct electricity

b)

It can conduct electricity very well

c)

It turns litmus paper blue

d)

It releases hydrogen gas when reacting with metals

55.

What is the pH range of acidic solutions?

a)

0 to 7

b)

7 to 14

c)

0 to 14

d)

Below 0

56.

Which solution is likely to have the highest conductivity?

a)

A solution with a high concentration of ions

b)

A solution with only non-electrolytes

c)

A solution with no ions

d)

Deionized water

57.

What indicates that a solution is an electrolyte?

a)

It turns into a solid when electricity is applied

b)

It does not support a current

c)

It supports a current

d)

It changes color when electricity is applied

58.

What does it mean if an acid or base conducts electricity strongly?

a)

It is considered a weak acid or base

b)

It is considered a strong acid or base

c)

It is called a non-electrolyte

d)

It means it cannot dissolve in water

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