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Acids and bases

Total questions: 55

Worksheet time: 48mins

Name
Class
Date
1.

Acids are subtances that release hydrogen ions (H+) when dissolved in water.

a)

Yes

b)

No

2.

Which of the following is an acid?

a)
b)
c)
3.

What acid is found in your stomach for food to digest?

a)

sulfuric acid

b)

nitric acid

c)

hydrochloric acid

4.

True or False: It is always SAFE to touch or taste an acid.

a)

True

b)

False

5.

Soda contains acid. Which of the following are most likely true about the acid in soda? 

a)

turn blue litmus paper red

b)

taste sour

c)

produce positive ions (H+) when mixed with water

d)

all are correct

6.

When I see an acid, I can always touch it.

a)

Yes

b)

No

c)

Not sure

7.

Which of these are examples of a base?

a)

soap

b)

shampoo

c)

dishwashing liquid

d)

all of these

8.

When a red litmus paper is used to test a base, it will turn into

a)

blue

b)

red

c)

yellow

9.

Is egg an example of base?

a)

Yes because it's slippery.

b)

Yes because it taste bitter when raw

c)

both are correct

10.

I can touch base anytime.

a)

No

b)

Yes

c)

Not sure.

11.

Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

12.

Is laundry detergent an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

13.

Is pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

14.

Vinegar is an example of:

a)

An acid.

b)

A base.

c)

Neither an acid nor a base.

15.

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.

16.

A sour taste is a characteristic of:

a)

acids

b)

bases

c)

neutral

d)

pH scale

17.

Which is a characteristic of a base?

a)

tastes sour

b)

found mostly in foods

c)

feels slippery

d)

turn litmus paper red

18.

What is being donated/accepted between conjugate acid-base pairs?

a)

a hydrogen (H+) ion

b)

a hydroxide (OH-) ion

c)

water

d)

a neutron

19.
What color does litmus paper turn in the presence of an acid?
a)
blue
b)
black
c)
green
d)
red
20.

Taste bitter

a)

acids

b)

bases

c)

neutral

d)

pH paper

21.

Which of these pH values represent an acid?

a)

4

b)

8

c)

10

d)

12

22.

Milk is a very weak acid. What might its pH value be?

a)

6.5

b)

7.8

c)

4.2

d)

12.2

23.

When acids react with metals, they produce hydrogen gas and salt.

a)

True

b)

False

24.

When an acid is dissolved in water, it turns red litmus paper blue.

a)

True

b)

False

25.

Which of the following are properties of acids?

a)

They conduct electricity when dissolved in water

b)

They taste sour

c)

They react with metals to produce hydrogen gas

d)

All of the answer choices are correct

26.

Which of the following is an acid?

a)

vinegar

b)

bleach

c)

sugar in water

d)

starch in water

e)

toothpaste in water

27.

An acid is a solution that contains __________ ions dissolved in water.

a)

positive

b)

negative

28.

The pH value of an acid represents its __________ of positive ions in the solution

a)

amount

b)

concentration

c)

color

d)

charge

29.

Which of the following is a property of a base?

a)

bitter taste

b)

reacts with metals

c)

salty

d)

sour taste

30.

Which of the following pH values represents a base?

a)

2.1

b)

4.6

c)

6.8

d)

8.1

31.

Identify this solution.

a)

Acid

b)

base

c)

salt

32.

Identify this solution.

a)

acid

b)

base

c)

salt

33.

When an acid react with a base, it is a ............. reaction

a)

acid

b)

base

c)

neutralization

34.

A ....... is a compound made of positive and negative ions

a)

acid

b)

base

c)

salt

35.

An .......... forms ions in water.

a)

acid

b)

base

c)

electrolyte

36.

The pH of an acid is

a)

more than 7

b)

equal to 7

c)

less than 7

37.

The pH of a base is

a)

more than 7

b)

equal to 7

c)

less than 7

38.

A neutral solution has a pH

a)

more than 7

b)

equal to 7

c)

less than 7

39.

The pH value of salt and water is

a)

more than 7

b)

equal to 7

c)

less than 7

40.

A strong acid can be neutralized by a .......... base

a)

weak

b)

strong

c)

neutral

41.

Identify an acid

a)

NaOH

b)

H2O

c)

HCl

d)

NaCl

42.

Identify a base.

a)

HCl

b)

NaOH

c)

H2O

d)

NaCL

43.

Identify a salt

a)

HCl

b)

H2O

c)

NaCl

d)

NaOH

44.

Which one is NOT an acid?

a)

lemon

b)

vinegar

c)

baking soda

d)

tomato

45.

Which one is NOT a base?

a)

Baking soda

b)

blood

c)

drain cleaner

d)

coffee

46.

Which of the following substances is acidic?

a)

baking soda

b)

lemon-lime soda

c)

distilled water

d)

soap

47.

What happens immediately after you dissolve acid in water?

a)

Positively charged hydrogen atoms are released

b)

Hydronium ions are released

c)

Negatively charged hydrogen atoms are released

d)

Neutrally charged hydrogen atoms are released

48.

Acids are caustic to the touch. In this context, what does "caustic" mean?

a)

Stinging or burning

b)

Pleasant

c)

Sarcastic

d)

Gentle

49.

A hydronium ion is like a(n) ______ molecule with an extra hydrogen atom.

a)

Acid

b)

Base

c)

Water

d)

Vinegar

50.

What substance would do the best job of cleaning pots and pans?

a)

A substance with a pH of 7

b)

A substance with a pH of 4

c)

A substance with a pH of 2

d)

A substance with a pH of 8

51.

. What is a property of bases?

a)

Slippery touch

b)

Sour taste

c)

Ability to dissolve metal

d)

Ability to form hydronium ions

52.

How do acidic solutions taste?

a)

Delicious

b)

Sweet

c)

Bitter

d)

Sour

53.

Which of the following substances is basic?

a)

Apple juice

b)

Ginger ale

c)

Baking soda

d)

Distilled water

54.

pH stands for:

a)

Potency of hydrogen

b)

Plurality of hydrogen

c)

Potential of hydrogen

d)

Pleurisy of hydrogen

55.

What do acids and bases have in common?

a)

They both eat away at metal

b)

They can both conduct electricity

c)

They both have a sour taste

d)

They both form positively charged ions when dissolved in water

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