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Unit 5 Test Review Solutions - 2025

Total questions: 55

Worksheet time: 1hrs 12mins

Name
Class
Date
1.

The solubility graph below shows the amounts of four substances that will dissolve in 100 grams of water at various water temperatures.


Which substance has 80 grams of solute dissolved in 100 grams of water at 50 C?

a)

Potassium Bromide

b)

Ammonium Chloride

c)

Potassium Chloride

d)

Lithium Hydroxide

2.

Use the printed "Solubility Graph" & only choose ONE answer.

When 180 grams of Potassium Iodide is dissolved in 100 grams of water at 30 ºC, the solution can be correctly described as:

a)
supersaturated
b)
unsaturated
c)
saturated
3.

Use the printed "Solubility Graph" & only choose ONE answer.

What mass of Sodium Chloride, NaCl, will dissolve in 100 mL of water at 75 oC, to form a saturated solution?

a)

40 g

b)

28 g

c)

110 g

d)

35 g

4.

Use the printed "Solubility Graph" & only choose ONE answer.

What mass of potassium chlorate, KClO3, will dissolve in 100mL of water at 200C, to form a saturated solution?

a)

10g

b)

28 g

c)

110 g

d)

162 g

5.

Use the printed "Solubility Graph" & only choose ONE answer.

What mass of potassium nitrate, KNO3, will dissolve in 100mL of water at 700C, to form a saturated solution?

a)

140 g

b)

28 g

c)

110 g

d)

35 g

6.

Use the printed "Solubility Graph" & only choose ONE answer.

If a mass of 70 grams of potassium nitrate, KNO3, dissolved in 100 mL of water at 700C, what type of solution would be formed?

a)

Sautrated

b)

Unsaturated

c)

Supersaturated

d)

Can't tell with this information

7.

Use the printed "Solubility Graph" & only choose ONE answer.

Which solute is the least soluble at 90 ⁰C?

a)

Potassium Iodide

b)

Potassium Chlorate

c)

Sodium Chloride

d)

Sodium Nitrate

8.

Use the printed "Solubility Graph" & only choose ONE answer.

How many grams of Potassium Nitrate can dissolve at 45⁰C?

a)

20 g

b)

40 g

c)

75 g

d)

110 g

9.

Use the printed "Solubility Graph" & only choose ONE answer.

When 180 grams of Potassium Iodide is dissolved in 100 grams of water at 30 ºC, the solution can be correctly described as:

a)
supersaturated
b)
unsaturated
c)
saturated
10.

Use the printed "Solubility Graph" & only choose ONE answer.

A solution that contains 70 g of Sodium Nitrate at 30 ºC, How many more grams are needed to saturate a solution ?

a)

95 g

b)

25 g

c)

0 g

d)

50 g

11.

Use the printed "Solubility Graph" & only choose ONE answer.

When 120 grams of Sodium Nitrate is dissolved in 100 grams of water at 30 ºC, the solution can be correctly described as:

a)

Supersaturated b/c the point falls above the line

b)

Saturated b/c the point falls above the line

c)

Saturated b/c the point falls on the line

d)

Unsaturated b/c the point falls above the line

e)

Unsaturated b/c the point falls below the line

12.

Use the printed "Solubility Graph" & only choose ONE answer.

Which substances is most soluble at 45 oC?

a)

Sodium Chlorate

b)

Sodium Nitrate

c)

Potassium Nitrate

d)

Potassium Chlorate

13.
Which solute is the most soluble at 10 ⁰C?
a)
KI
b)
KClO3
c)
NH4Cl
d)
NH3
14.
Which solute is the least soluble at 90 ⁰C?
a)
SO2
b)
KClO3
c)
KI
d)
HCl
15.
How many grams of SO2 can dissolve at 50 ⁰C?
a)
5 g
b)
10 g
c)
20 g
d)
39 g
16.
When 50 grams of KCl is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:
a)
supersaturated
b)
unsaturated
c)
saturated
17.
This solution would be considered
a)

Unsaturated b/c the point is above the line

b)

Supersaturated b/c the point is above the line

c)

Saturated b/c the point is on the line

d)

Saturated b/c the point is above the line

18.

Use the printed "Solubility Graph" from your notes packet,

Which solute is the most soluble at 10 ⁰C?

a)

potassium chlorate

b)

Sodium Chloride

c)

Potassium Nitrate

19.

Use the printed "Solubility Graph" from your notes packet,

Which solute is the least soluble at 90 ⁰C?

a)

Potassium Iodide

b)

Potassium Chlorate

c)

Sodium Chloride

d)

Sodium Nitrate

20.

Use the printed "Solubility Graph" from your notes packet,

How many grams of Potassium Nitrate can dissolve at 45⁰C?

a)

20 g

b)

40 g

c)

71 g

d)

110 g

21.

Use the printed "Solubility Graph" from your notes packet,

When 180 grams of Potassium Iodide is dissolved in 100 grams of water at 30 ºC, the solution can be correctly described as:

a)
supersaturated
b)
unsaturated
c)
saturated
22.

Use the printed "Solubility Graph" from your notes packet,

How many grams of Potassium Chlorate is needed to saturate a solution at 15 ºC?

a)

5 g

b)

9 g

c)

27 g

d)

152 g

23.

Use the printed "Solubility Graph" from your notes packet,

A solution that contains 70 g of Sodium Nitrate at 30 ºC, How many more grams are needed to saturate a solution ?

a)

95 g

b)

25 g

c)

0 g

d)

50 g

24.

Use the printed "Solubility Graph" from your notes packet,

When 120 grams of Sodium Nitrate is dissolved in 100 grams of water at 30 ºC, the solution can be correctly described as:

a)
supersaturated
b)
unsaturated
c)
saturated
25.

Use the printed "Solubility Graph" from your notes packet,

How can you tell that a solution of 30 g of Sodium Chloride is unsaturated at 35 oC?

a)

The point falls above the line

b)

The point falls below the line

c)

The point falls on the line saturated

26.

Use the printed "Solubility Graph" from your notes packet,

How can you tell that a solution of 50 g of Potassium Chlorate is saturated at 90 oC?

a)

The point falls above the line

b)

The point falls below the line

c)

The point falls on the line saturated

27.

Use the printed "Solubility Graph" from your notes packet,

Which substances is most soluble at 45 oC?

a)

Sodium Chlorate

b)

Sodium Nitrate

c)

Potassium Iodide

28.
A mixture combines 2 or more materials without changing their properties.
a)
True
b)
False
29.
Solutions are formed when one or more substances dissolve in another.
a)
True
b)
False
30.

Which of the following is a mixture?

a)

table salt

b)

sugar

c)

lucky charms cereal

d)

oxygen

31.

Which is an example of a solution?​

a)
orange juice
b)
koolaid powder
c)
chex mix
d)
fruit salad
32.

How are a mixture of sand and water and a mixture of salt and water different?

a)

Salt dissolves in the water. Sand does not dissolve in water.

b)

Sand dissolves in water. Salt does not dissolve in water.

c)

Sand floats in water. Salt sinks in water.

d)

Sand melts in the water. Salt sinks in the water.

33.

Is iced tea a mixture or solution?

a)

homogenous solution

b)

heterogenous mixture

34.

In which mixture can you not see all of the parts?

a)

homogeneous

b)

heterogeneous

35.

Ms. Powers made Kool-Aid for her classes. The sugar and powder mixture was the​ (a)   . The water was the ​ (b)   . The Kool-Aid was the ​ (c)  

Choose from the below words
solute
solvent
solution
equation
salt
solve
36.

Water is the universal ____.

a)

solute

b)

solvent

c)

solution

37.

What is another name for a homogeneous mixture?

a)

Solute

b)

Solution

c)

Heterogeneous mixture

d)

Solvent

38.

What type of mixture is this

a)

heteregenous

b)

homogeneous

39.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

40.

Max is hungry and he prepares Honey Oats Cluster cereal with milk. This is an example of a: 

a)
Homogeneous mixture
b)
Heterogeneous mixture
41.

milk

a)

solution

b)

suspension

c)

colloid

d)

alloy

42.

snow globe

a)

solution

b)

suspension

c)

colloid

d)

alloy

43.

salad dressing

a)

solution

b)

suspension

c)

colloid

d)

alloy

44.

The part of a solution that DOES the dissolving

a)

solute

b)

solvent

c)

colloid

d)

heterogeneous

45.

What mixture separates into layers over time?

a)

Colloid

b)

Suspension

c)

Solution

46.

What mixture cannot be separated?

a)

Colloid

b)

Suspension

c)

Solution

47.

  1. The water is the part of the solution known as the _____________

a)

solvent

b)

solute

c)

colloid

d)

suspension

48.

Which of the following changes will cause the solute to dissolve more quickly?

a)

Opening the container

b)

Shaking the container

c)

Decreasing the Temperature

d)

Decreasing the solvent

49.

Thinking back to the sugar cube lab, What is another way to increase the solubility of the cube? 

a)

Crush the cube to increase the surface area

b)

Crush the cube to decrease the surface area

c)

Increase the amount of solute and solvent

d)

Increase the size of the flask

50.

Adding more NaCl to the solution will make will make the mixture______________

a)

more concentrated

b)

more dilute

c)

less concentrated

d)

unsaturated

51.

  1. A student adds a solute into a solvent and stirs the mixture until the solute dissolves. She 

                repeats this over and over until no more solute will dissolve and there is exactly the   

                maximum amount of solute it can hold. What type of solution has been created?    


a)

unsaturated solution

b)

saturated solution

c)

supersaturated solution

d)

suspention

52.

  1. What is one way to increase the solubility of a substance in water?

a)

Decrease the amount of water.

b)

Increase the amount of substance

c)

Heat the water

d)

Chill the water

53.

  1. A student creates a liquid mixture of sand in water. The sand particles can be seen and can 

                be easily separated by settling or filtration. What type of mixture has been created?


a)

a solution

b)

a solute

c)

a colloid

d)

a suspension

54.

  1. A mixture in which one substance does not evenly distribute in another is described as 

a)

a solution

b)

a homogeneous solution

c)

a heterogeneous mixtrue

d)

a compount

55.

Which statement is true of the Tyndall Effect?

a)

A beam of light is scattered/blocked by both the solution and the colloidtyndall effect

b)

A beam of light is scattered/blocked by the solution only

c)

A beam of light is NOT scattered/blocked by the solution but WILL be scattered/blocked by the colloid

d)

A beam of light is NOT scattered/blocked by the solution or the colloid

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