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Unit 5 review - physical science

Total questions: 50

Worksheet time: 34mins

Name
Class
Date
1.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
2.

Which of these is NOT a factor that affects solvation?

a)

agitation/stirring

b)

increasing temperature

c)

increasing surface area

d)

adding dye

3.

The process of breaking a solute into smaller particles by a solvent to produce a solution is called ______.

a)

solvation

b)

immisciblation

c)

dissociation

d)

dispersion

4.

Why does heating a solution increase the rate of solvation?

a)

Makes the particles hit harder

b)

increases electron motion

c)

makes it more likely they are the same polarity

d)

Increases pressure

5.

Is the substance that dissolves in another substance?

a)

solute

b)

solvent

c)

dissolution

d)

solvent

6.

solute + solvent =

a)

solution

b)

equation

7.

Fish breathe oxygen, which is dissolved in water. Is the oxygen the fish breathe considered to be the solute or solvent?

a)

Solute

b)

Solvent

8.

How much KNO3 solute is saturated at 40 degrees?

a)

75

b)

55

c)

65

d)

85

9.

How much C12H22O11 solute is saturated at 40 degrees?

a)

240

b)

220

c)

230

d)

250

10.

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

a)

20

b)

15

c)

30

d)

2

11.

How much NaBr solute is saturated at 70 degrees?

a)

110

b)

120

c)

130

d)

140

12.

Which solute is MOST likely a gas?

a)

KNO3

b)

NaNO3

c)

KCl

d)

Ce2(SO4)3

13.

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

a)

62

b)

73

c)

81

d)

You cannot determine this

14.

At what temperature can you fully dissolve 60g of KNO3?

a)

27

b)

30

c)

37

d)

You cannot determine this

15.

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

a)

70

b)

20

c)

100

d)

You cannot determine this

16.

What type of a solution is 60g NaNO3 at 40ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

17.

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

a)

Saturated

b)

Unsaturated

c)

Supersaturated

18.

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

a)

Saturated

b)

Unsaturated

c)

Supersaturated

19.

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

a)

Saturated

b)

Unsaturated

c)

Supersaturated

20.

What type of a solution is 55g KCl at 70ºC in 100g H2O?

a)

Saturated

b)

Unsaturated

c)

Supersaturated

21.

A solution with a concentration higher than the solubility is ___

a)

is not possible

b)

is unsaturated

c)

is supersaturated

d)

is saturated

22.

what is an acid?

a)

A pH lower then 7

b)

A pH higher then 7

c)

A pH of 7 (neutral)

23.

Which food(s) contains acid?

a)

Lemon

b)

Lime

c)

Cola

d)

None of the above

24.

2. Lemon

a)

Acid

b)

Base

25.

5. Antacid

a)

Acid

b)

Base

26.

Which of the following values would represent the pH of a strong base?

a)

1

b)

8

c)

7

d)

13

27.

CaCO3

a)

acid

b)

base

c)

salt

28.

CsOH

a)

acid

b)

base

c)

salt

29.

H3PO4

a)

acid

b)

base

c)

salt

30.

Which of the following is a property of an acid

(a) Slippery feel(b) Non-reactive(c) Sour taste(d) Strong color

a)

a

b)

b

c)

c

d)

d

31.

In the following chemical equation, which compound is the acid?


HCl + NH3 → NH4+ + Cl−

a)

HCl

b)

NH3

c)

NH4+

d)

Cl−

32.

Which formula represents a hydroxide ion?

a)

H3O+

b)

OH-

c)

NH4+

d)

HCO3-

33.

The table shows the pH of several solutions. Which solution is the most acidic?

a)

vinegar

b)

milk

c)

water

d)

bleach

34.
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
35.

H3PO4 is an example of a ...

a)

acid

b)

base

c)

salt

d)

non-electrolyte

36.
An indicator will ______________ when it is in contact with an acid or base
a)
Bubble
b)
Form a new substance
c)
Change color
d)
Stay the same color
37.

A solution has a pH of 10.34

Is it an Acid or a Base?

a)

Acid

b)

Base

38.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

39.

A solution with a pH of 8.6 would be a(n)

a)

Acid

b)

Base

c)

Neutral

d)

Acid and Base

40.
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
41.

The pH scale is used to know what?

a)

Your temperature

b)

Know one knows

c)

The colors of acids and bases

d)

The strength of acids and bases

42.

Acids have a pH of _______________.

a)

below 7

b)

above 7

c)

exactly 7

43.

Neutral solutions have a pH of _______________.

a)

below 7

b)

above 7

c)

exactly 7

44.
If there is excess hydrogen ions, the solution will be...
a)
acidic
b)
basic
45.
A neutralization reaction will (almost) always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
46.

What do acids produce when placed in water?

a)

Hydroxide ions

b)

Hydrogen ions

c)

Salt and water

d)

Soap

47.

What do bases produce when placed in water?

a)

Hydroxide ions

b)

Hydrogen ions

c)

Salt and water

d)

Acids

48.

All acids contain

a)

Hydrogen

b)

Salt

c)

Water

d)

Chlorine

49.

Acids taste

a)

Slippery

b)

Salty

c)

Sour

d)

Bitter

50.

Bases taste

a)

Slippery

b)

Bitter

c)

Sour

d)

Salty

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