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Phys Sci Unit 6 Review- Solutions

Total questions: 110

Worksheet time: 4hrs 32mins

Name
Class
Date
1.

A solution is made by adding 22 g solute in 0.86 L of solvent. Determine the mass concentration.

a)

25.58 g/L

b)

20.93 g/L

c)

18.60 g/L

d)

30.00 g/L

2.

Determine the mass of the solute in grams. The mass/volume concentration of the solution is 40 g/100mL and the volume of the solution is 300 mL.

a)

120 g

b)

150 g

c)

100 g

d)

140 g

3.

5 g NaCl is added to 0.24 L of water to make a solution. Determine the mass concentration of the solution.

a)

20.83 g/L

b)

21.00 g/L

c)

22.50 g/L

d)

23.00 g/L

4.

A solution is made by adding 22 g solute in 0.86 L of solvent. The mass concentration is ____.

a)

25.58 g/L

b)

20.93 g/L

c)

18.60 g/L

d)

30.00 g/L

5.

36 grams of NaCl is added to water to make a solution of concentration 12 g/L. Determine the volume of the solution in liters. The volume is ____.

a)

3 L

b)

2 L

c)

4 L

d)

5 L

6.

A solution with a mass concentration of 16 g/100 mL is given. Determine the volume of this solution (in mL) containing 260 g of solute. The volume is ____.

a)

1625 mL

b)

1500 mL

c)

1620 mL

d)

1650 mL

7.

5 g NaCl is added to 0.24 L of water to make a solution. Determine the mass concentration of the solution. The mass concentration is ____.

a)

20.83 g/L

b)

21.00 g/L

c)

22.50 g/L

d)

23.00 g/L

8.

A solution is made by adding 50 g solute in 1.5 L of solvent. Determine the mass concentration.

a)

33.33 g/L

b)

30.00 g/L

c)

35.00 g/L

d)

40.00 g/L

9.

2 g NaCl is dissolved in water to prepare a solution of 30 g/100mL concentration. Determine the volume of the solution in milliliters.

a)

6.67 mL

b)

10 mL

c)

15 mL

d)

20 mL

10.

A 2.5-liter sugar solution is made with a mass concentration of 7.5 g/L. Find the solute mass in grams.

a)

A) 18.75 g

b)

B) 20 g

c)

C) 25 g

d)

D) 30 g

11.

What should be the volume (mL) of a solution containing 10 g of solute and mass/volume concentration 0.25 g/mL?

a)

30 mL

b)

40 mL

c)

50 mL

d)

60 mL

12.

99 g NaOH is added to water to make a v mL solution of 0.264 g/mL concentration. Determine the value of v.

a)

375 mL

b)

400 mL

c)

425 mL

d)

450 mL

13.

A 450 mL of 30 g/L salt solution is given. Determine the mass of the salt present in the solution.

a)

13.5 g

b)

14 g

c)

15 g

d)

16 g

14.

Fill in the blank: A solution with a mass concentration of 20 g/L and a volume of 2 L contains ______ grams of solute.

a)

A) 30

b)

B) 35

c)

C) 40

d)

D) 45

15.

Fill in the blank: A solution with 5 g of solute in 100 mL has a mass concentration of ______ g/mL.

a)

0.04

b)

0.05

c)

0.06

d)

0.07

16.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
17.
What is a solvent
a)
the liquid in which a solute is dissolved to form a solution.
b)
Another word for solution
c)
A thing that make drinks turn colors
d)
Its a metal molecole
18.

Which substance is least soluble at 0 ºC?

a)

KI

b)

KNO3

c)

KClO3

d)

Ce2(SO4)3

19.

How many grams are soluble in 100 g of water at 100 ºC?

a)

300 grams

b)

250 grams

c)

100 grams

d)

50 grams

20.

When 40 grams of NaCl is dissolved in 100 grams of water at 90 ºC, the solution can be correctly described as:

a)

supersaturated

b)

saturated

c)

unsaturated

21.
Which solute does not increase in solubility as temperature rises?
a)
NH3
b)
NaNO3
c)
KNO3
d)
NaCl
22.
You can make a solution more concentrated by adding __________.
a)
solute
b)
solvent
c)
water
23.
Solution where more solute can still be dissolved at the given temperature. 
a)
Saturated
b)
Unsaturated
c)
Supersaturated
d)
Homogeneous solution
24.

Identify how many grams of KNO3 is required to make a saturated solution at 40'C.

a)

50 g

b)

45 g

c)

55 g

d)

33 g

25.
If I dissolve sugar in water, what is the solute?
a)
Water
b)
Hydrogen
c)
Sugar
d)
Carbon
26.

What will allow more solute to be dissolved in a solvent if the solute is a solid?

a)

adding more solute

b)

stiring

c)

cooling solution

d)

heat

27.

Which of the following is an example of a solvent?

a)

sugar

b)

salt

c)

copper sulphate

d)

water

28.
The _____is the part that gets dissolved. 
a)
solute 
b)
solvent 
c)
solution 
d)
Sacajawea 
29.
A solution is a kind of ________. 
a)
mixture 
b)
compound 
c)
element 
d)
stuff 
30.
The universal solvent is ______. 
a)
sodium 
b)
acid 
c)
water 
d)
wind 
31.
When one of the parts of the solution is water we call it _________. 
a)
water stuff 
b)
water mixture 
c)
aqua-man
d)
aqueous 
32.
Solubility is a ________ property. 
a)
neat 
b)
chemical 
c)
physical 
d)
an organic 
33.

The ______ is the smaller part of the solution.

a)

solute

b)

solvent

c)

system of a down

34.

At 30'C, which substance has the lowest solubility?

a)

KNO3

b)

KBr

c)

NaCl

d)

Yb2(SO4)3

35.

At which temperature do KBr and KNO3 have the same solubility?

a)

60

b)

55

c)

50

d)

Never

36.

The solubility of Yb2(SO4)3 ________________ with added temperature.

a)

increases

b)

decreases

c)

remains the same

37.

At 80'C, KBr's solubility is:

a)

100

b)

90

c)

80

d)

0

38.

Determine the solubility for the substances at 55'C and arrange them in order from lowest to highest solubility.

a)

NaCl, NH4Cl, KBr, NaNO3

b)

NaCl, NH4Cl, NaNO3, KBr

c)

NH4Cl, NaCl, NaNO3, KBr

d)

NaNO3, KBr, NH4Cl, NaCl

39.

At 10'C, NaNO3's solubility is 80 g/100 g of H2O. Based on this information, what would the solubility be in 50 g of H2O.

a)

40

b)

80

c)

160

d)

16

40.

Identify if the following solution would be saturated, unsaturated, or supersaturated: 103 g KBr at 70'C.

a)

Unsaturated

b)

Saturated

c)

Supersaturated

41.

Identify how many grams of KNO3 is required to make a saturated solution at 40'C.

a)

50 g

b)

45 g

c)

60 g

d)

33 g

42.

This is a type of mixture where one substance dissolves into another

a)

Solution

b)

Miscibility

c)

Compound

d)

Solubility

43.

Which is an example of a solution?

a)

Salt and Sugar

b)

Salt Water

c)

Jelly beans

d)

Concrete

44.
What type of mixture separates upon standing?
a)
Solution
b)
Alloy
c)
Colloid
d)
Suspension
45.
Which are different types of mixtures
a)
suspension
b)
solution
c)
colloid
d)
all the above
46.
A colloid is a mixture that contains undissolved particles. 
a)
True
b)
False
47.
What type of mixture contains liquids that normally don't mix well?
a)
colloid
b)
emulsion
c)
alloy
d)
solution
48.
What is the solvent in a solution of kool-aid and water?
a)
glass
b)
kool-aid
c)
water
49.
Oil and water is an example of what type of mixture?
a)
colloid
b)
alloy
c)
solution
d)
emulsion
50.
What are the two types of Mixtures
a)
Elements and Subatomic Particles
b)
Protons and Electrons
c)
Atoms and Compounds
d)
Homogenous and Heterogeneous
51.
Cookies and cream ice cream would be classified as
a)
A homogenous mixture
b)
A heterogenous mixture
c)
An element
d)
A compound
52.

Two substances have been combined physically and appear the same throughout is called a.........

a)

A homogeneous mixture

b)

A heterogeneous mixture

c)

An element

d)

A compound

53.
___________ is a combination of substances that can be physically separated. 
a)
Colloid 
b)
Mixture 
c)
Suspension 
d)
Compound 
54.
This type of mixture has particles that settle. 
a)
Suspension
b)
Colloid 
c)
Emulsion
d)
Solution 
55.

The three types of mixtures are..

a)

solutions, solutes, solvents

b)

solutions, colloids, suspensions

c)

solutions, colloids, sediments

d)

concentrates, dilutes, dissolvers

56.

A feature of a colloid is that..

a)

they are cloudy

b)

they are transparent

c)

they are colourless

d)

they have a sediment

57.

Solutions has ______________ sized particles, colloids have _________________ sized particles, and suspensions have _________________________ sized particles.

a)

small, medium, large

b)

large, medium, small

c)

medium, small, large

d)

medium, large, small

58.
A mixture in which 2 liquids are mixed so evenly that it is not possible to see the separate particles 
a)
Solute 
b)
Solution
c)
Solvent 
d)
Suspension 
59.

Fog

a)

Solution

b)

Colloid

c)

Suspension

60.

Sand in water

a)

colloid

b)

solution

c)

suspension

61.
The light is spread out by flour and water, and does not go through the mixture.  What is the mixture called.
a)
Solution
b)
Suspension
c)
Colloid
62.

Concentration is

a)

the amount of solute in the solvent

b)

the amount of solvent in the solute

c)

density

d)

particle size

63.

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

64.

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

65.

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

66.
Which of the following word pairs correctly completes the sentence below?
_______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
a)
Acids; pH less than 7
b)
Acids; pH greater than 7
c)
Bases; pH greater than 7
d)
Bases; pH less than 7
67.
The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is
a)
neutral
b)
basic
c)

acidic or basic.
d)
acidic
68.
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
69.
What would be considered the weakest base? 
a)
8
b)
14
c)
7.8
d)
11.6
70.
Many cleaning solutions are bases. Which of the following is a property of most bases?
a)
feels slippery
b)
white color
c)
can only be liquid
d)
tastes sour
71.
Pure water has a pH of 7. Pure water _______.
a)
is a base
b)
is a neutral substance
c)
could be either an acid or a base
d)
is an acid
72.
A compound that changes color when it is in contact with an acid or base is called______________
a)
Acid
b)
Base 
c)
Neutral
d)
Indicator
73.
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
74.
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
75.
Acid + base --> ?
a)
salt + hydrogen gas + water
b)
salt + carbon dioxide + water
c)
salt + water
d)
salt only
76.
 bicarbonate of soda (pH 9) be used to treat a bee sting.
 A bee sting is ________.
a)
Acidic
b)
Basic
c)
Neutral
d)
salt
77.
A wasp sting is alkaline (pH 9). What could be used to treat a wasp sting???
a)
acidic
b)
basic
c)
neutral
d)
salt
78.

What is the chemical formula for hydroxide?

a)

H3O+

b)

H3O-

c)

OH+

d)

OH-

79.

Weak acids have a lower pH than stronger acids?

a)

True

b)

False

80.

Most foods would be considered

a)

bases

b)

acids

c)

neutral

81.

Litmus is a common

a)

catalyst

b)

indicator

c)

enzyme

d)

base

82.

William was conducting a science experiment and found that a certain substance had a pH less than 7. This substance is likely a(n) ______.

a)

Acid

b)

Alkaline

c)

Base

d)

Buffer

83.

David was conducting a science experiment and found a substance with a pH greater than 7. This substance is a(n) _______.

a)

Base

b)

Acid

c)

Buffer

d)

Water

84.

Mason and Abigail were conducting a science experiment. They were testing different solutions to see which one releases H+ in solution. Daniel suggested they test the following options. Which one should they choose?

a)

Base

b)

Acid

c)

Buffer

d)

Water

85.

Maya was conducting a chemistry experiment in her school lab. She noticed that a substance she used was releasing OH- ions into the solution. What type of substance was Maya likely using?

a)

Acid

b)

Base

c)

Neutral

86.

Aiden, Benjamin, and Roman are conducting a science experiment to determine the acidity of various household items. They have narrowed down their options to Baking Soda, Lemon Juice, Black Coffee, and Milk. According to their findings, which item is the most acidic?

a)

Baking Soda

b)

Lemon Juice

c)

Black Coffee

d)

Milk

87.

Anika, Samuel, and Grace were conducting a science experiment. They had lemon juice, hydrochloric acid, cabbage, and milk. According to the pH range, which substance did they find to be more acidic than lemon juice?

a)

Hydrochloric acid

b)

cabbage

c)

milk

d)

phosphoric acid

88.

Benjamin, Avery, and Hannah are conducting a science experiment in their school lab. They are using bleach, which is a strong base. Can you tell them what the pH level of bleach is?

a)

13

b)

7

c)

1

d)

2

89.

Samuel, Michael, and Henry are in a chemistry lab. Samuel has a strong acid and Michael has an equally strong base. What might happen if they mixed these two substances?

a)

There would be an explosive chemical reaction.

b)

The acid Samuel has would destroy the base Michael has.

c)

The base Michael has would destroy the acid Samuel has.

d)

They'd wind up with a pH-neutral substance.

90.

During a biology class, Nora, Ethan, and Mason were discussing the pH level of human blood. They learned that it falls between 7.35 and 7.45. Based on this information, how would you best describe human blood?

a)

strongly acidic

b)

slightly acidic

c)

strongly basic

d)

slightly basic

91.

Abigail was doing a science experiment and she found that soap, which is a base, turned red litmus paper to blue. Aiden told her that bases are sometimes called alkaline. Is Aiden's statement true or false?

a)

True

b)

False

92.

Henry and Maya were doing a chemistry experiment. They mixed a chemical with water and it produced an H3O+. Benjamin asked them, what type of chemical did they use?

a)

Acid

b)

Base

93.

Emma and Abigail are conducting a chemistry experiment. They want to produce an (OH) ion in their solution. Which chemical should they mix with water to achieve this?

a)

Acid

b)

Base

94.

Nora, Ethan, and Aiden were conducting a science experiment in their school lab. They found that the water they used in their experiment was neutral. This was because

a)

it had more H+ ions than OH- ions, as Ethan suggested

b)

it had more OH- ions than H+ ions, as Aiden thought

c)

it did not produce any ions, as Nora hypothesized

d)

it had an equal amount of H+ and OH- ions in solution, as their science teacher explained

95.

Liam, Jackson, and Evelyn are conducting a science experiment in their school lab. They have a solution with a pH of 7.0. What would happen to the pH if they added H+ ions to the solution?

a)

pH would go up

b)

pH would go down

c)

pH would stay the same

d)

None of these

96.

Noah, Mia, and Charlotte are conducting a science experiment. They mixed equal amounts of H+ and OH- to create a solution. Noah believes that the solution they created is neutral. Is Noah's statement true or false?

a)

True

b)

False

97.

Benjamin, Evelyn, and Kai are working on a science project. They found an unknown substance in a beaker in their school lab. They want to determine the relative pH of the unknown substance. Benjamin places a piece of blue litmus paper into the substance, and the litmus paper stays blue.
The substance in the beaker

a)

is a base.

b)

has a neutral pH.

c)

is an acid.

d)

there is not enough information here to give a definitive answer

98.

Samuel was conducting a chemistry experiment in the lab. He had a few substances in front of him and he was wondering what would happen if he mixed an acid with one of them. Zoe suggested that 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

99.

Kai found a substance in the chemistry lab and observed the following characteristics:


It had a very bitter taste when he put a small amount on his tongue

It felt slippery when Harper touched it

When Priya dissolved it in water, it produced OH- ions


How should they classify this substance?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

100.

Arjun, Avery, and Aria were conducting a science experiment. They found a substance with the following characteristics:

Very sour taste

Feels soft to the touch

Produces H+ ions when dissolved in water

How should they classify this substance?

a)

acids

b)

bases

c)

enzyme

d)

fatty acid

101.

The solute for salt water is ​ ​ (a)  

Choose from the below words
salt
water
102.

The solvent for salt water is ​ (a)  

Choose from the below words
water
salt
103.

The solutes for Kool-Aid are ​ and ​ ​

a)
sugar
b)
a Kool-Aid packet
c)
water
104.

The solvent for Kool-Aid is ​ (a)  

Choose from the below words
water
Kool-Aid packet
sugar
105.

The solutes for coffee are ​ , ​ , and ​ ​ .

a)
coffee
b)
sugar
c)
cream or milk
d)
water
106.

The solvent for coffee is ​ (a)  

Choose from the below words
water
sugar
coffee
milk or cream
107.

The solutes for tea are ​ ,​ , and​

a)
tea
b)
sugar
c)
lemon
d)
water
108.

The solvent for tea is ​ (a)  

Choose from the below words
water
lemon
tea
sugar
109.

The solutes for Coca-Cola are ​ ​and​

a)
carbon dioxide
b)
cola syrup
c)
water
110.

The solvent for Coca-Cola is ​ (a)  

Choose from the below words
water
carbon dioxide
cola syrup

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