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Solubility

Total questions: 59

Worksheet time: 2hrs 42mins

Name
Class
Date
1.

A homogeneous mixture is the same thing as...

a)

a solution

b)

a heterogeneous mixture

c)

a compound

d)

an element

2.

The prefix hetero means...

a)

same

b)

different

c)

together

d)

awesome

3.

A type of mixture that forms when one substance dissolves in another is known as a

a)

heterogeneous mixture

b)

solution

c)

solute

d)

solvent

4.
What does it mean to dilute a solution?
a)
lower the concentration of solute per solvent
b)
increase the concentration of solute per solvent
5.
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
6.

Which substance is least soluble at 0 ºC?

a)

KI

b)

KNO3

c)

KClO3

d)

Ce2(SO4)3

7.

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

8.

Which solute is most likely a gas?

a)

NH3

b)

NaNO3

c)

KCl

d)

NaCl

9.

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

10.
Which solute does not increase in solubility as temperature rises?
a)
NH3
b)
NaNO3
c)
KNO3
d)
NaCl
11.
You can make a solution more concentrated by adding __________.
a)
solute
b)
solvent
c)
water
12.
Solution where more solute can still be dissolved at the given temperature. 
a)
Saturated
b)
Unsaturated
c)
Supersaturated
d)
Homogeneous solution
13.
A solution of potassium chlorate, KClO3, has 20 grams of the salt dissolved in 100 grams of water at 70 ºC. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?
a)
10 grams
b)
30 grams
c)
80 grams
d)
60 grams 
14.

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

15.
What will allow more solute to be dissolved in a solvent.
a)
adding more solute
b)
stiring
c)
cooling solution
d)
heat
16.

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

a)

KNO3

b)

KBr

c)

NaCl

d)

Yb2(SO4)3

17.

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

a)

60

b)

55

c)

50

d)

Never

18.

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

a)

increases

b)

decreases

c)

remains the same

19.

At 80'C, KBr's solubility is:

a)

100

b)

90

c)

80

d)

0

20.

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

21.

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

22.

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

a)

Unsaturated

b)

Saturated

c)

Supersaturated

23.

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

24.

How could you change a saturated solution to an unsaturated solution?

a)

Add solvent

b)

Add solute

25.

Define the term soluble.

a)

Can dissolve in water

b)

Cannot dissolve in water

c)

Partially dissolves in water

26.
How does a solution become supersaturated?
a)
dissolve lots of solute in it.
b)
dissolve a little solute in it. 
c)
dissolve more solute than you should be able to. 
d)
dissolve a solvent in it. 
27.
What is a precipitate?
a)
an insoluble reactant formed during a chemical reaction
b)
an insoluble product formed during a chemical reaction
c)
a soluble solvent in a saturated solution
d)
a soluble solute in a saturated solution
28.
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
d)
it is a made up word
29.
Which of the following usually makes a substance dissolve faster in a solvent?
a)
agitating the solution
b)
increasing the particle size of the solute
c)
lowering the temperature
d)
decreasing the number of particles
30.

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

a)

20

b)

15

c)

30

d)

2

31.

At what temperature can you fully dissolve 140g of NaNO3?

a)

62

b)

73

c)

81

d)

You cannot determine this

32.

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

a)

Saturated

b)

Unsaturated

c)

Supersaturated

33.

Which of the following is a solution?

a)

salt (NaCl)

b)

salad

c)

blood

d)

Oxygen gas (O2)

34.

Water is called the ___________ _____________

a)

universal solute

b)

universal solvent

c)

universal solution

35.

___________ and other substances like vitamins and minerals are absorbed in our bodies by dissolving in the water that makes up our cells .

a)

nitrogen

b)

nutrients

c)

pressure

36.

Substances that dissolve in water are _____________, which means " water loving"

a)

hydrophobic

b)

hydrophilic

c)

hyperactive

37.

Substances that do not dissolve in water are called ________, which means " water fearing"

a)

hydrophilic

b)

hydrofearic

c)

hydrophobic

38.

Concentration of a solution can be expressed as a ratio :

a)

C = M / M

b)

C = V / M

c)

C = M / V

39.

Mass of a solute is measured in ________

a)

liters

b)

mL

c)

grams

40.

Volume of a liquid solution can be measured in ________

a)

grams

b)

moles

c)

liters

41.

A containers holds 2 grams of solute and 4 mL of solvent. What is the concentration of the solution ?

a)

.125 g/mL

b)

.25 g/mL

c)

.50 g m/L

42.

What is the concentration of a solution that has 4 g of sugar and 2 mL of water ?

a)

2 g/L

b)

4 g/L

c)

8 g/ L

43.

Solution A has a concentration of .4 g / L and solution B has a concentration of .9 g/L . Which solution has a higher concentration?

a)

solution A

b)

solution B

44.

Solubility is measured in _____ of solute per ________ mL of water

a)

liters, 100

b)

grams, 100

c)

grams, 1

45.

When a solution is _____________ it CAN dissolve more solute

a)

saturated

b)

super saturated

c)

unsaturated

46.

When mixing substances with different densities , substances with _________densities sink to the bottom .

a)

higher

b)

lower

c)

neither they will be equal

47.

The X axis of this solubility graph shows what variable ?

a)

saturation

b)

grams

c)

temperature

48.

The Y axis of this graph shows what variable ?

a)

temperature

b)

celcius

c)

solubility rate

49.

What compound's solubility rate shows to be constant as temperature increases?

a)

BaNo32

b)

Na2So4

c)

NaCl

50.

Type of mixture that has the SAME COMPOSITION in every part.

a)

Homogenous

b)

Heterogeneous

51.
Combination of two or more pure substances that are not chemically combined
a)
compound          
b)
atom
c)
mixture 
d)
element
52.
Which is the best set of tools to use for separating a mixture of water, sugar, and pebbles?
a)
a filter and a magnet
b)
a filter and a hot plate
c)
a magnet and a hot plate
d)
a settling tank and a filter
53.
Salad is an example of a
a)
homogeneous mixture
b)
heterogeneous mixture
54.
A combination of pure substances, not in fixed amounts, that can be easily separated.is a
a)
MIXTURE
b)
COMPOUND
c)
ATOM
d)
PARTICLE
55.
Making a mixture results in ___________________ only.
a)
chemical reactions
b)
separate parts
c)
physical changes
d)
two subtances
56.

A substance made of only 1 type of atom is called --

a)

an element

b)

a salt

c)

a compound

d)

a mixture

57.

Which of the pictures represents a mixture?

a)

A

b)

B

c)

C

58.

Which picture represents a compound?

a)

A

b)

B

c)

C

59.

Which of the following is a heterogeneous mixture?

a)

salt water

b)

sugar water

c)

soda

d)

beach sand

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