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Acids and bases

Total questions: 37

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

Cam and Kaliyah are doing a science experiment. They mix an acid with a base in a beaker. Which of the following statements is true concerning what happens when acids and bases are mixed?

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

2.

During a science experiment, Carter and Layla are testing different substances. They notice that one of the substances has a sour taste, is corrosive, and changes litmus paper from blue to red. Which is the correct set of acid properties?

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

3.

Jasmine and Ricardo are testing the pH of pure water in their science class. They want to know: Neutral solutions have a pH of:

a)

0

b)

1

c)

7

d)

14

4.

Makenzie, Jess, and Luis are comparing different drinks and ingredients in their kitchen. They notice that vinegar, fruit juice, and cola all taste sour. These are examples of:

a)

salts

b)

neutral substances

c)

bases

d)

acids

5.

Sarah and Jordan are helping to clean the kitchen and notice that the drain cleaner contains NaOH. Is NaOH an acid or a base?

a)

Acid

b)

Base

c)

Neither (Neutral)

6.

Diego and Jasmine are doing laundry together. They wonder whether laundry detergent is an acid or a base. What is the correct answer?

a)

Acid

b)

Base

c)

Neither (Neutral)

7.

Zuri and Elijah are cleaning windows at home using a household window cleaner that contains ammonia. What is the likely pH of ammonia?

a)

3

b)

7

c)

8

d)

12

e)

6

8.

Ricardo pours pure water into a glass and uses a pH strip to test it. Is the pure water acidic, basic, or neutral?

a)

Acidic

b)

Basic

c)

Neutral

9.

Peyton and Layla are curious about the properties of cooking oil. They decide to check the pH of cooking oil with litmus paper. The results will indicate that the oil is:

a)

Acidic

b)

Basic

c)

Neutral

10.

During a science experiment, Camie and Nolan are testing different liquids to see how acidic or basic they are. They use the pH scale to record their results. The pH scale is a range from:

a)

1-7

b)

0-14

c)

1-5

d)

1-14

11.

During a science experiment, Liam and Kori tested a liquid and found it had a pH less than 7. This means the liquid is a(n) ______.

a)

Acid

b)

Alkaline

c)

Base

d)

Buffer

12.

Pari and Zuri are testing the pH of a solution in their science class and find that it has a pH of 8.6. This solution would be a(n)

a)

Acid

b)

Base

c)

Neutral

d)

Acid and Base

13.

Shane and Simone are learning about acids in their science class. Which property is not associated with acids?

a)

Sour taste

b)

strong acids can burn you

c)

turns litmus paper blue

d)

reacts with metals

14.

Ja'dyien and Kanyli are in the science lab and want to test whether a solution is an acid or a base. What type of paper should they use for this test?

a)

Red paper

b)

Blue paper

c)

Lined paper

d)

Litmus paper

15.

During a science experiment, Naseem and Jasmine tasted two different solutions. One solution tasted sour, and the other tasted bitter. Which type of solutions tastes bitter?

a)

Acids

b)

Bases

c)

None of the following

d)

Acids & Bases

16.

During a science experiment, Arian and Jasmine learned that some substances can burn you if they are strong enough. What are these substances?

a)

Acids

b)

Bases

c)

Water

d)

Acids & Bases

17.

During a science experiment, Reagan and Naomi are testing different solutions to find out which one is acidic. Which ion should they look for to identify the properties of acids?

a)

Sodium ion

b)

Hydrogen ion

c)

Hydroxide ion

d)

Oxide ion

18.

During a science experiment, Reagan and Makenzie are testing different solutions to find out which ion is responsible for the properties of bases. Which ion should they look for?

a)

Sodium ion

b)

Hydrogen ion

c)

Hydroxide ion

d)

Oxide ion

19.

Ricardo and Sarahi are conducting experiments with different substances in their science class. They want to identify which properties are unique to acids and not bases. Which of the following are properties of acids but not bases? Select all that apply.

a)

Changes the color of an indicator

b)

Sour taste

c)

Reacts with metals to produce hydrogen gas

d)

Feels slippery

20.

During a science experiment, Kori and Pierre are testing different substances to see if they are bases. They use pH paper and notice that bases have a pH of

a)

7

b)

Less than 7

c)

More than 7

21.

During a science experiment, Sainabou and Brenden mixed an acid with a base in the lab. What are the products formed from this neutralization reaction? Select all that apply

a)

An ionic salt

b)

Hydronium ions

c)

NaCl

d)

Water

22.

During a chemistry lab, Sarah and Ricardo are asked to identify which of the following is a binary acid. Which one should they choose?

a)

H2SO4

b)

HNO3

c)

H2Se

d)

HC2H3O2

23.

During a chemistry class, Ricardo and Naomi are discussing the components of an oxyacid. Ricardo says an oxyacid is made up of hydrogen, _________, and a third element. What is the missing component?

a)

nitrogen

b)

oxygen

c)

carbon

d)

hydroxide

24.

During a chemistry experiment, Letica and Reagan are asked to identify the formula for nitrous acid. What is the formula for nitrous acid?

a)

HNO2

b)

H3N

c)

HNO3

d)

HNO

25.

During a chemistry lab, Morris and Jordan are asked to identify the formula for hydrosulfuric acid. Which of the following is correct?

a)

H2S

b)

H2SO2

c)

H2SO3

d)

H2SO4

26.

Benjamin and Gabby are preparing for their chemistry lab experiment. They need to identify which of the following acids are strong acids. Select all that apply.

a)

HI

b)

H2SO4

c)

HF

d)

HCl

e)

HClO3

27.

During a chemistry lab, Sarah, Naomi, and Kanyli are testing different substances to identify which one is NOT a strong base. Which of the following is NOT a strong base?

a)

NaOH

b)

RbOH

c)

Al(OH)3

d)

Ca(OH)2

28.

During a science experiment, Elijah and Heba each add a different substance to water. Elijah notices that his solution produces hydrogen ions. Based on this observation, which statement best describes an Arrhenius acid?

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

29.

In their chemistry class, Mauricio and Haleigh are discussing bases. According to the Arrhenius definition, which of the following best describes an Arrhenius base?

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

30.

During a chemistry class, Morris and Pari are discussing acids and bases. Morris asks, "What is a Bronsted-Lowry base?" Which of the following best describes it?

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

31.

During a chemistry experiment, Jess and Liam are discussing acids. Jess says that a Bronsted-Lowry acid is a proton donor. Who is correct?

a)

produces hydroxide ions in a solution

b)

is a proton donor

c)

produces hydrogen ions in a solution

d)

is a proton acceptor

32.

During a science experiment, Saul and Sarah observed that water could donate a proton in one reaction and accept a proton in another. According to the Bronsted-Lowry model, this means water is

a)

neutral

b)

conjugate

c)

ionic

d)

amphoteric

33.

During a chemistry experiment, Naseem and Lesly observe the following reaction:

F- + H2O --> HF +OH-

Identify the true statement about this reaction:

a)

H2O is a bronsted lowry base

b)

H2O is not an acid or base according to either model

c)

H2O is a bronsted lowry acid

d)

H2O is an arrhenius acid

34.

During a chemistry experiment, Mahyo and Zach mix HI with water and observe the following reaction:

HI + H2O --> I- + H3O+

Choose the correct statements about HI based on this reaction (select all that apply):

a)

HI is an arrhenius acid

b)

HI is an arrhenius base

c)

HI is a bronsted lowry acid

d)

HI is a bronsted lowry base

35.

During a chemistry class, Jess and Carter are discussing acid-base conjugate pairs. Jess says that these pairs differ by a single particle. What particle are they referring to?

a)

Electron

b)

Proton

c)

Neutron

d)

Oxygen

36.

During a chemistry study session, Jess and Gigi are discussing acid-base pairs. Which of the following shows an acid and its conjugate base pair (in that order)?

a)

H2SO4, SO42-

b)

OH-, H2O

c)

NH4+, H2O

d)

H2CO3, HCO3-

37.

During a chemistry experiment, Carter and Mahyo are discussing whether C2H3O2- could act as a base when placed in water. What do you think?

a)

Yes, because it can accept a H+

b)

Yes, because it can donate a H+

c)

No, because it cannot donate a H+

d)

No, because it cannot accept a H+