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Acids and Bases Super Review

Total questions: 65

Worksheet time: 2hrs 2mins

Name
Class
Date
1.
Which has a pH below 7?
a)
Acid
b)
Base
2.
Which has a bitter taste?
a)
Base
b)
Acid
c)
flagella
d)
cila
3.
Which has a slippery texture?
a)
Acid
b)
Base
4.
Turns litmus red
a)
Acids
b)
Bases
c)
All
5.

What pH is the strongest base?

a)

1

b)

7

c)

4

d)

14

6.

What colour does a base turn red litmus paper?

a)

Red

b)

Blue

7.
What methods can you use to measure the pH of a solution?
a)
Observing color or clarity
b)
Measuring mass or volume
c)
Measuring density or electrical conductivity
d)
Using acid base-indicators or pH meters
8.
Which of the following is most likely to be basic:
a)
Lemon juice
b)
Vinegar
c)
Laundry detergent
d)
Coke
9.
Tastes Sour
a)
Acids
b)
Bases
c)
Salts
d)
All
10.
Why are bases useful as cleaning products?
a)
They dissolve fats and oils
b)
they are corrosive, so they eat anything
c)
they don't mix with water
d)
since bases are slippery, they slip dirt off of surfaces
11.
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
12.
Which of these pH values would indicate that a solution is a weak base?
a)
4
b)
5.6
c)
8
d)
13
13.
When dissolved in water, acids produce:
a)
bases
b)
salts
c)
hydrogen ions
d)
hydroxide ions
14.
Which type of ion does a base produce when it is dissolved in water?
a)
oxide
b)
oxygen
c)
hydrogen
d)
hydroxide
15.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
16.
Neutralization reactions
a)
formed from joining positive and negative ions 
b)
increases OH ions
c)
froms a salt and water
d)
increases H2O ions
17.

Acids are __________, which means they "eat away" at other materials.

a)

transitional metal

b)

alkaline

c)

flammable

d)

corrosive

18.

Acidic solutions exhibit a higher ratio of H3O+ ions, known as...

a)

neutrons

b)

hydroxide

c)

electrons

d)

hydronium

19.

When you place blue litmus paper into an unknown clear solution, the blue litmus paper turns red.

Which of the following represents the most logical conclusion?

a)

The substance has a pH value of "2".

b)

The substance is a base.

c)

The substance has a pH value of "7".

d)

The substance is acidic.

20.

What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH-) ions?

a)

below 7

b)

7

c)

above 7

d)

0-14

21.

Do acids and bases conduct electricity?

a)

Only acids conduct electricity

b)

Only bases conduct electricity

c)

Bases and acids conduct electricity

d)

Neither conduct electricity

22.

Which of the following salts will give an aqueous solution having pH of almost 7?

a)

Ammonium nitrate

b)

Ammonium chloride

c)

Calcium chloride

d)

Sodium chloride

23.

What is a titration?

a)

when the moles of hydrogen ions is equal to the moles of hydroxide ions

b)

adding a known amount of solution of known concentration to determine the concentration of an unknown

c)

reaction in which an acid and a base react in an aqueous solution to produce a salt and water

d)

the extent of ionization of an acid or base

24.

Zinc granules on treating with an acid X, forms zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and gas evolved Y.

a)

X-Sulphuric acid and Y- Oxygen gas

b)

X- Hydrochloric acid and Y- Oxygen gas

c)

X- Sulphuric acid and Y- Hydrogen gas

d)

X- Hydrochloric acid and Y- Hydrogen ga

25.

Which of the following indicators turn red in an acidic solution?

a)

phenolphthalein

b)

red litmus

c)

turmeric

d)

methyl orange

26.

1] The litmus paper is produced from

a)

Lichens

b)

Plant leaves

c)

Fruits

d)

Spinach

27.

When found in food, acids often taste ________.

a)

Sour

b)

Bitter

c)

Salty

d)

Slippery

28.

When found in food, bases often taste _______.

a)

Sour

b)

Bitter

c)

Salty

d)

Soggy

29.

Four solutions are tested and found to have the following pH values. Which of these substances would be considered the weakest acid?

a)

Lemon Juice - pH=2

b)

Apple Juice - pH=4.5

c)

Shower Cleaner - pH=5.5

d)

Hydrogen Peroxide - pH=7

30.

According to the pH range which substance is more acidic than lemon juice?

a)
Hydrochloric acid
b)

Cabbage

c)

Milk

31.

What happens when a solution of  an acid is mixed with a solution of a base in a test tube?

a)

The temperature of the solution increases.

b)

The temperature of the solution decreases.

c)

The temperature remains constant.

d)

No reaction occurs.

32.

An aqueous solution turns red litmus blue. Excess addition of which of the following would reverse the change?

a)

Baking powder

b)

Lime

c)

Ammonium hydroxide solution

d)
HCL
33.

Calcium phosphate is present in tooth enamel. It is _____.

a)
basic
b)
acidic 
c)
neutral
d)
amphoteric
34.

A sample of soil is mixed with water and allowed to settle. The solution turns yellowish-orange. Which of the following solutions will turn the color greenish-blue? 

a)

Lemon juice

b)

Vinegar

c)

Common salt

d)

Antacid

35.

If a few drops of concentrated acid accidentally spill over a student's hand, what should be done?

a)

Wash the hand with saline solution.

b)

Wash the hand immediately with plenty of water and apply a soln of sodium hydrogen carbonate.

c)

After washing apply soln of sodium hydroxide.

d)

Neutralize the acid wih a strong alkali.

36.

True or false: a neutral solution has equal amounts of H+ and OH-.

a)

True

b)

False

37.

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

38.

HCl is found in household products, including some toilet bowl cleaners. Is HCl an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

39.

Complete the definition below:

Acids are _____.

a)

hydrogen donors

b)

hydrogen acceptors

c)

proton donors

d)

proton acceptors

40.

The pH scale is used to determine the strength of

a)

acids and bases

b)

chemical bonds

c)

electrical charges

d)

particles in a solution

41.

Which of the following salts does not contain water of crystallisation?

a)

Blue vitreol

b)

Baking soda

c)

Washing soda

d)

Gypsum

42.

Which of the following statements is true concerning acids and bases?

a)

acids and bases don't react with each other

b)

acids mixed with bases neutralize each other

c)

acids mixed with bases make stronger bases

d)

acids mixed with bases make stronger acids

43.

True or false: bases are sometimes called alkaline.

a)

True

b)

False

44.

Which is the correct set of acid properties, as described by Boyle:

a)

sour taste, corrosive, change litmus from red to blue

b)

sour taste, corrosive, change litmus from blue to red

c)

sweet taste, slippery, change litmus from blue to red

d)

sour taste, slippery, change litmus from blue to red

45.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

46.

Which is true?

a)

pH of less than 7 is basic; pH of more than 7 is acidic

b)

pH of less than 7 is acidic; pH of more than 7 is basic

47.

Vinegar, fruit juice, and cola are examples of _____.

a)

strong acids

b)

strong bases

c)

strong bases

d)

weak acids

48.

Is laundry detergent an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

49.

Ammonia is found in many household products, including window cleaner. What is the pH of ammonia?

a)

It's acidic.

b)

It's basic.

c)

It's neutral.

50.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

51.

Water found near sources of air pollution tends to be _____.

a)

acidic

b)

basic

c)

neither. Air pollution doesn't alter the pH of water

52.

Vinegar is an example of _____.

a)

an acid

b)

a base

c)

neither an acid nor a base

53.

If you check the pH of cooking oil with litmus paper, the results will indicate that the oil is _____.

a)

acidic

b)

basic

c)

neither acidic nor basic, since a substance must dissociate in water to cause a change to litmus paper.

54.

Milk is generally _____

a)

slightly acidic and becomes more acidic over time.

b)

basic, although it becomes more acidic over time.

c)

milk is neither acidic nor basic.

d)

basic and it becomes more basic over time.

55.

When using the Bronsted Lowry definition of acids and bases, the acid will ______________ a hydrogen proton.

a)

donate

b)

accept

56.

When using the Arrhenius model, what types of ions indicate that a compound is a base?

a)

H+1

b)

OH-1

57.

When using the Arrhenius model, what types of ions indicate that a compound is an acid?

a)

H+

b)

OH-1

58.

When using the Bronsted Lowry definition of acids and bases, the base will _____ a hydrogen proton.

a)

donate

b)

accept

59.

Is the following compound an acid or a base?


HCl

a)

Acid

b)

Base

60.

Is the following compound an acid or a base?


NH4OH

a)

acid

b)

base

61.

Is the following compound an acid or a base?


HI

a)

acid

b)

base

62.

Is the following compound an acid or a base?


H3PO4

a)

acid

b)

base

63.

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


HCl + NH3 → NH4+ + Cl−

a)

HCl

b)

NH3

c)

NH4+

d)

Cl−

64.

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


HCl + NH3 → NH4+ + Cl−

a)

HCl

b)

NH3

c)

NH4+

d)

Cl−

65.
What is the range of pH values in an acidic solution?
a)
0-7
b)
7-14
c)
15-239058204958
d)
pH = 7

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