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Unit 3 Changes in Matter Test Bank Quizizz

Total questions: 154

Worksheet time: 3hrs 6mins

Name
Class
Date
1.

How many main states of matter are there?

a)

2

b)

3

c)

4

d)

5

2.

Which of the following is a property of matter?

a)

Matter has no mass.

b)

Matter occupies no space.

c)

Matter has mass.

d)

Matter is invisible

3.

Ice is a _______________.

a)

Fluid

b)

Liquid

c)

Gas

d)

solid

4.

Burning of fire crackers ________________.

a)

releases heat only

b)

absorbs heat

c)

releases heat and light

d)

absorbs light

5.

Conversion of water into water vapor is called _______________.

a)

condensation

b)

evaporation

c)

sublimation

d)

filtration

6.

Which of the following is generally an irreversible process?

a)

Chemical change

b)

Physical change

c)

Freezing

d)

Boiling

7.

In which of the following reactions, is a new substance is formed?

a)

Sugar crystals are dissolved in hot water.

b)

Boiling of water and formation of steam.

c)

Cutting of an apple into two pieces.

d)

Burning of wood and formation of ash and fumes.

8.

Water solidifies to form ___________________.

a)

steam

b)

ice

c)

fog

d)

hail

9.

Water converts into steam in the presence of heat. This process is called ________________________.

a)

solidification

b)

freezing

c)

evaporation

d)

condensation

10.

In a chemical change, the reactants and products are the same.

a)

True

b)

False

11.

Water absorbs heat to form steam.

a)

True

b)

False

12.

Separating individual substances from a mixture or suspension is called filtration.

a)

True

b)

False

13.

During a chemical change only the appearance of the substance changes.

a)

True

b)

False

14.

Rusting of a nail

a)

Chemical change

b)

Physical change

15.

Breaking a plate

a)

Chemical change

b)

Physical change

16.

Baking bread

a)

Chemical change

b)

Physical change

17.

A boiled egg

a)

Chemical change

b)

Physical change

18.

process of photosynthesis

a)

Chemical change

b)

Physical change

19.

Making orange juice

a)

Chemical change

b)

Physical change

20.

Souring of milk

a)

Chemical change

b)

Physical change

21.

Tearing of paper into several pieces

a)

Chemical change

b)

Physical change

22.

Mixing of two transparent liquids form a cloudy precipitation

a)

Chemical change

b)

Physical change

23.

_________ are ingredients of a chemical reaction.

a)

Reactants

b)

Products

c)

Reagents

d)

Enzymes

24.

A + B → C + D. In the given reaction, what are C and D?

a)

Reactants

b)

Products

c)

Reagents

d)

Enzymes

25.

A + B → C + D. In the given reaction, what are C and D?

a)

Reactants

b)

Products

c)

Reagents

d)

Enzymes

26.

Nitrogen reacts with oxygen to produce Nitrogen Oxide. In this reaction, oxygen is a ____________.

a)

Reactants

b)

Products

c)

Reagents

d)

Enzymes

27.

Which of the following is/are chemical changes during a chemical reaction?

a)

Change in color

b)

Formation of precipitate

c)

Release of heat and light

d)

All the above

28.

A chemical reaction is a process in which ____________ are converted into ______________.

a)

atoms, molecules

b)

reactants, products

c)

acids, bases

d)

energy, matter

29.

What is present during combustion reaction?

a)

Only energy

b)

Only oxygen

c)

Only fuel

d)

All the above

30.

During a chemical reaction, ________________ are formed and broken down.

a)

chemical bonds

b)

reactants

c)

products

d)

atoms

31.

The formation of a chemical bond, releases energy into the surroundings.

a)

True

b)

False

32.

Energy is stored in a chemical bond.

a)

True

b)

False

33.

Burning of something is called ________________________.

a)

solidification

b)

combustion

c)

evaporation

d)

condensation

34.

Which of the following is an example of an exothermic reaction?

a)

Freezing of water into ice

b)

Melting of water

c)

Photosynthesis

d)

Combustion

35.

Which of the following is an example of an endothermic reaction?

a)

Freezing of water into ice

b)

Melting of water

c)

Photosynthesis

d)

Combustion

36.

Any reaction involving burning is an ____________________ reaction.

a)

exothermic

b)

endothermic

c)

endergonic

d)

none of the above

37.

If more energy is produced during a chemical reaction than utilized in the reaction, it is a/an _____________________ reaction.

a)

endothermic

b)

exothermic

c)

endergonic

d)

evaporation

38.

In an exothermic reaction, energy is released in the environment.

a)

True

b)

False

39.

In a combustion reaction, carbon dioxide and water are the products.

a)

True

b)

False

40.

In a combustion reaction, carbon dioxide and water are the reactants.

a)

True

b)

False

41.

A chemical reaction can be both exothermic and endothermic.

a)

True

b)

False

42.

According to the graph, what type of reaction is this?

a)

Endothermic

b)

Exothermic

c)

Isothermic

d)

Hyperthermic

43.

According to the graph, what type of reaction is this?

a)

Endothermic

b)

Exothermic

c)

Isothermic

d)

Hyperthermic

44.

According to the graph, what are A and B?

a)

Reactants

b)

Products

c)

Catalysts

d)

Bank Robbers

45.

According to the graph, what is C?

a)

Reactants

b)

Products

c)

Catalysts

d)

Bank Robber

46.

According to the graph, what contains more stored energy in their bonds?

a)

Reactants

b)

Products

47.

According to the graph, what contains more stored energy in their bonds?

a)

Reactants

b)

Products

48.

Which of the following is an exothermic reaction?

a)

Switching on a bulb

b)

Melting of ice

c)

Evaporation of water

d)

Respiration

49.

Fission means ______________

a)

absorption

b)

splitting

c)

burning

d)

expanding

50.

Reactants are formed during a chemical reaction.

a)

True

b)

False

51.

Heat energy is always released from a chemical reaction

a)

True

b)

False

52.

Chemical bonds are broken and formed in a chemical reaction.

a)

True

b)

False

53.

During photosynthesis, heat energy is supplied from outside

a)

True

b)

False

54.

In an exothermic reaction, heat is ___________________________.

a)

released

b)

absorbed

c)

gained

d)

neither released nor absorbed

55.

In an endothermic reaction, heat is ___________________________.

a)

released

b)

absorbed

c)

not changed

d)

neither released nor absorbed

56.

State whether the given reactions are endothermic or exothermic.

Freezing of water

a)

Endothermic

b)

Exothermic

c)

Isothermic

57.

State whether the given reactions are endothermic or exothermic.

Melting of water

a)

Endothermic

b)

Exothermic

c)

Isothermic

58.

State whether the given reactions are endothermic or exothermic.

Combustion

a)

Endothermic

b)

Exothermic

c)

Isothermic

59.

State whether the given reactions are endothermic or exothermic.

Respiration

a)

Endothermic

b)

Exothermic

c)

Isothermic

60.

State whether the given reactions are endothermic or exothermic.

Photosynthesis

a)

Endothermic

b)

Exothermic

c)

Isothermic

61.

A campfire is an example of

a)

Exothermic reaction

b)

Endothermic reaction

c)

Physical change

d)

Sublimation

62.

Baking bread is a(an) ____________.

a)

Exothermic reaction

b)

Endothermic reaction

c)

Physical change

d)

Sublimation

63.

Evaporation of water in a puddle is a/an ____________________ reaction

a)

exothermic

b)

endothermic

c)

exergonic

d)

none of the above

64.

If more energy is required to make the chemical bonds than to break them, it is a/an _____________________ reaction.

a)

endothermic

b)

exothermic

c)

endergonic

d)

evaporation

65.

Reactants in endothermic reaction have less energy than that of the products formed.

a)

True

b)

False

66.

When an endothermic reaction takes place in a test tube, the test tube feels warmer.

a)

True

b)

False

67.

During rusting of iron, heat is absorbed from the environment

a)

True

b)

False

68.

Endothermic reactions are a type of endergonic process.

a)

True

b)

False

69.

Which of the following equations observes the law of conservation of mass?

a)

H2 + Cl2 --> HCl

b)

4Na + O2 --> 2Na2O

c)

Fe + Cl2 --> FeCl3

d)

C3H8 + O2 --> CO2 +H2O

70.

Which of the following equations does not observe the law of conservation of mass?

a)

2H2 + O2 --> 2H2O

b)

N2 + 3H2 --> 2NH3

c)

Fe + Cl2 --> FeCl3

d)

2PbO + C --> 2Pb + CO2

71.

12g of carbon completely reacts with 32g oxygen to form ______ g of carbon dioxide

a)

12

b)

24

c)

32

d)

44

72.

24.6g of lithium oxide is formed from 5.7g oxygen and ______g lithium

a)

5.7

b)

18

c)

18.9

d)

24.6

73.

The law of conservation of mass states...

a)

The total mass of the reactants is equal to half the products

b)

The total mass of the reactants is equal to the total mass of the products

c)

Half the mass of the reactants is equal to the total mass of the products

d)

Half the mass of the reactants is equal to half the products

74.

18.02g of water are separated by electrolysis into hydrogen and oxygen gas.

If 16.00g of oxygen gas are obtained, how much hydrogen gas is obtained?

a)

16.00g

b)

1.01g

c)

8.00g

d)

2.02g

75.

Iron reacts with oxygen to form ferrous oxide, commonly known as rust.

If 55.85g of iron reacts with 24.00g oxygen. What is the mass of the rust formed?

a)

79.85g

b)

55.85g

c)

24.00g

d)

111.70g

76.

If 21.6g of mercury (II) sulfide is used and 20.0g of mercury is made,

how many grams of sulfur must have been made?

a)

21.6g b. 20.0g c. 1.6g d. 18.4g

b)

20.0g

c)

1.6g

d)

18.4g

77.

The composition of pure substances can be described as...

a)

Equal

b)

Definite

c)

Constant

d)

Absolute

78.

How do elements combine?

a)

In whole numbers

b)

By halves

c)

Randomly

d)

In portions

79.

Which of the following would affect the composition of a pure compound?

a)

Its source

b)

How its prepared

c)

Its country of origin

d)

None of these

80.

Find the mass ratio of nitrogen dioxide (NO2)

a)

1:1

b)

1:2

c)

2:1

d)

2:2

e)

7:16

81.

Find the mass ratio of ammonia (NH3)

a)

3:1

b)

1:3

c)

3:14

d)

14:3

82.

Classify the following reactions as either a synthesis (S) or decomposition (D) reaction.

Iron and sulfur forming iron sulfide

a)

Synthesis (S)

b)

Decomposition (D)

83.

Classify the following reactions as either a synthesis (S) or decomposition (D) reaction.

The electrolysis of water into hydrogen and oxygen

a)

Synthesis (S)

b)

Decomposition (D)

84.

Classify the following reactions as either a synthesis (S) or decomposition (D) reaction.

Nitric oxide and oxygen gas forming nitrogen dioxide

a)

Synthesis (S)

b)

Decomposition (D)

85.

Classify the following reactions as either a synthesis (S) or decomposition (D) reaction.

Calcium carbonate becoming calcium oxide and carbon dioxide.

a)

Synthesis (S)

b)

Decomposition (D)

86.

Classify the following reactions as either a synthesis (S) or decomposition (D) reaction.

The formation of potassium chloride from potassium metal and chlorine gas.

a)

Synthesis (S)

b)

Decomposition (D)

87.

A synthesis reaction is...

a)

Small molecules combining into a larger more complex product.

b)

A large reactant breaks down into smaller products.

c)

When one reactant is exchanged for an ion in another reactant

d)

When two cations exchange places

88.

Which of the following is an example of a synthesis reaction?

a)

C + O2 --> CO2

b)

MgCO3 --> MgO + CO2

c)

2AgNO3 + Ni --> Ni(NO3)2 + 2Ag

d)

d. H2SO4 --> H2O + SO3

89.

A decomposition reaction is...

a)

Small molecules combining into a larger more complex product.

b)

A large reactant breaks down into smaller products.

c)

When one reactant is exchanged for an ion in another reactant.

d)

When two cations exchange places

90.

Which of the following is an example of a decomposition reaction?

a)

CaO + H2O --> Ca(OH)2

b)

BaCl2 + F2 --> BaF2 + Cl2

c)

BaCO3 --> BaO + CO2

d)

2S + 3O2 --> 2SO3

91.

Complete combustion forms the products carbon monoxide, carbon water and carbon dioxide.

a)

True

b)

False

92.

In combustion reactions, one of the reactants is oxygen.

a)

True

b)

False

93.

Clean combustion results in the complete oxidation of the hydrocarbon

a)

True

b)

False

94.

Burning fossils fuels such as coal usually occurs as an incomplete combustion reaction.

a)

True

b)

False

95.

Dirty combustion produces the products carbon dioxide and water.

a)

True

b)

False

96.

Which picture demonstrates complete combustion?

a)

Heating Flame (Blue)

b)

Safety Flame (Yellow)

97.

Which picture demonstrates the airhole is closed?

a)

Heating Flame (Blue)

b)

Safety Flame (Yellow)

98.

Classify the following word equations as Synthesis (S), Decomposition (D), Combustion (C) or Single Displacement (SD), or Double Displacement (DD).

Zinc and copper sulfate forming copper and zinc sulfate

a)

Synthesis (S)

b)

Decomposition (D)

c)

Combustion (C)

d)

Single Displacement (SD)

e)

Double Displacement (DD)

99.

Classify the following word equations as Synthesis (S), Decomposition (D), Combustion (C) or Single Displacement (SD), or Double Displacement (DD).

Ammonium hydroxide becoming water and ammonia

a)

Synthesis (S)

b)

Decomposition (D)

c)

Combustion (C)

d)

Single Displacement (SD)

e)

Double Displacement (DD)

100.

Classify the following word equations as Synthesis (S), Decomposition (D), Combustion (C) or Single Displacement (SD), or Double Displacement (DD).

Zinc and oxygen gas forming zinc oxide

a)

Synthesis (S)

b)

Decomposition (D)

c)

Combustion (C)

d)

Single Displacement (SD)

e)

Double Displacement (DD)

101.

Classify the following word equations as Synthesis (S), Decomposition (D), Combustion (C) or Single Displacement (SD), or Double Displacement (DD).

Magnesium and nitric acid forming magnesium nitrate and hydrogen gas

a)

Synthesis (S)

b)

Decomposition (D)

c)

Combustion (C)

d)

Single Displacement (SD)

e)

Double Displacement (DD)

102.

Classify the following word equations as Synthesis (S), Decomposition (D), Combustion (C) or Single Displacement (SD), or Double Displacement (DD).

Butane reacts with oxygen to give carbon dioxide and water.

a)

Synthesis (S)

b)

Decomposition (D)

c)

Combustion (C)

d)

Single Displacement (SD)

e)

Double Displacement (DD)

103.

Classify the following word equations as Synthesis (S), Decomposition (D), Combustion (C) or Single Displacement (SD), or Double Displacement (DD).

Lead (II) Nitrate reacts with Sodium Sulfate to produce Lead (II) Sulfate and Sodium Nitrate

a)

Synthesis (S)

b)

Decomposition (D)

c)

Combustion (C)

d)

Single Displacement (SD)

e)

Double Displacement (DD)

104.

Use the reactivity series to help you determine which of the following is more reactive.

Choose the most reactive metal in each case.

a)

Zn

b)

Mg

105.

Use the reactivity series to help you determine which of the following is more reactive.

Choose the most reactive metal in each case.

a)

Sn

b)

Al

106.

Use the reactivity series to help you determine which of the following is more reactive.

Choose the most reactive metal in each case.

a)

Pb

b)

Ag

107.

Use the reactivity series to help you determine which of the following is more reactive.

Choose the most reactive metal in each case.

a)

Au

b)

Pt

108.

Predict if these Single Displacement reactions will occur or not.

Calcium + lead (II) nitrate -->

a)

React

b)

No Reaction

109.

Predict if these Single Displacement reactions will occur or not.

Sodium + hydrochloric acid -->

a)

React

b)

No Reaction

110.

Predict if these Single Displacement reactions will occur or not.

Gold + hydrochloric acid -->

a)

React

b)

No Reaction

111.

Predict if these Single Displacement reactions will occur or not.

Chlorine + lithium iodide -->

a)

React

b)

No Reaction

112.

Decide which of the following statements regarding single displacement reactions are true and which are false.

Single displacement reactions when the cations of two chemical compounds exchange places.

a)

True

b)

False

113.

Decide which of the following statements regarding single displacement reactions are true and which are false.

Single replacement reactions more reactive elements replace less reactive elements.

a)

True

b)

False

114.

Decide which of the following statements regarding single displacement reactions are true and which are false.

The most reactive anion is fluorine

a)

True

b)

False

115.

Decide which of the following statements regarding single displacement reactions are true and which are false.

One of the reactants in a single displacement must be oxygen.

a)

True

b)

False

116.

Decide which of the following statements regarding single displacement reactions are true and which are false.

The reactants in a single replacement become one product.

a)

True

b)

False

117.

Which of the following is the most likely description of the product or products of a double-displacement reaction?

a)

one new compound and an element

b)

one new compound

c)

two new compounds

d)

oxygen and energy

118.

If calcium bromide (CaBr2) is added to silver nitrate (AgNO3), what products will form?

a)

AgBr + Ca(NO3)2

b)

AgCa + Br(NO3)2

c)

AgBr2 + CaNO3

d)

AgBr2 + Ca(NO3)2

119.

If calcium bromide (CaBr2) is added to silver nitrate (AgNO3), what precipitate will form?

a)

AgBr

b)

CaBr2

c)

AgNO3

d)

CaO3

120.

When iron sulfide (FeS) is combined with hydrogen chloride (HCl), which products are formed?

a)

FeS + HCl

b)

H2Fe + SCl2

c)

FeCl2 + H2S

d)

FeH + SCl

121.

When iron sulfide (FeS) is combined with hydrogen chloride (HCl), a gas is formed in the double-displacement reaction. Which gas would it be? (Hint: Use what you've learned about types of atoms and compounds and their properties in Semester 1 along with your ability to predict double-displacement products to correctly answer this question!)

a)

FeS

b)

H2Fe

c)

H 2S

d)

FeH

122.

For each of the following products decide if they are soluble (S) or insoluble (I).

Use the solubility table in your guided notes to help you.

PbCl2

a)

Soluble

b)

Insoluble

123.

For each of the following products decide if they are soluble (S) or insoluble (I).

Use the solubility table in your guided notes to help you.

KCl

a)

Soluble

b)

Insoluble

124.

For each of the following products decide if they are soluble (S) or insoluble (I).

Use the solubility table in your guided notes to help you.

Mg(OH)2

a)

Soluble

b)

Insoluble

125.

For each of the following products decide if they are soluble (S) or insoluble (I).

Use the solubility table in your guided notes to help you.

CuCO3

a)

Soluble

b)

Insoluble

126.

For each of the following products decide if they are soluble (S) or insoluble (I).

Use the solubility table in your guided notes to help you.

Ba(NO3)2

a)

Soluble

b)

Insoluble

127.

For each of the following products decide if they are soluble (S) or insoluble (I).

Use the solubility table in your guided notes to help you.

NH4Cl

a)

Soluble

b)

Insoluble

128.

Identify the precipitate.

Pb(NO3)2 + 2KCl → 2KNO3 + PbCl2

a)

Pb(NO3)2

b)

KCl

c)

KNO3

d)

PbCl2

e)

No Precipitate

129.

Identify the precipitate.

H2SO4 + 2 LiOH --> Li2SO4 + 2H2O

a)

H2SO4

b)

LiOH

c)

Li2SO4

d)

H2O

e)

No Precipitate

130.
A neutralization reaction will (almost) always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
131.
Identify the salt in the following equation:
Zn(OH)2 + HNO3   ---> H2O  + Zn(NO3)2
a)
Zn(OH)2
b)
HNO3
c)
H2O
d)
Zn(NO3)2
132.
In a ____ reaction, an acid and a base produce a salt and a water. 
a)
concentrated
b)
decomposition
c)
dilute
d)
neutralization
133.

Complete the following reaction:

HCl + Mg(OH)2 -->

a)

MgCl2 + H2O

b)

Mg +H2O

c)

MgCl2 + H2

d)

MgCl2 + H2O + CO2

134.

Complete the following reaction:

H3PO4 + NaOH -->

a)

Na3PO4 + H2O

b)

Na +H2O

c)

Na3PO4 + H2

d)

Na3PO4 + H2O + CO2

135.

Complete the following reaction:

HNO3 + Ca(OH)2 -->

a)

Ca(NO3)2 + H2O

b)

Ca +H2O

c)

Ca(NO3)2 + H2

d)

Ca(NO3)2 + H2O + CO2

136.
What type of reaction is displayed below?
HCl + NaOH → NaCl + H2O
a)
Neutralization
b)
Combustion
c)
Decomposition
d)

Single Displacement

e)

Synthesis

137.

Neutralization reactions most resemble ________ reactions.

a)

Double Displacement

b)
Combustion
c)
Decomposition
d)

Single Displacement

e)

Synthesis

138.

In a neutralization reaction, what are almost always the products of a reaction between an acid and a base?

a)
Another acid and base
b)
Carbon dioxide and a salt
c)
Water and a salt
d)
Either two acids or two bases
139.

HOH is another way or writing what?

a)

water

b)

sodium chloride

c)

salt

d)

neutralization reaction

140.
A neutralization reaction will (almost) always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
141.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Na + __H2O --> __NaOH + __H2
a)
2,2 --> 2,1
b)
4,4 --> 4,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
142.

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?

__Ca + __H2O --> __Ca(OH)2 + __H2

a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
143.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H2 + __S --> __H2S
a)
1,1 --> 1
b)
2,2 --> 2
c)
1,2 --> 1
d)
1,2 --> 2
144.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H2SO3 + __KOH--> __H2O+ __K2SO3
a)
2,1 --> 2,1
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
145.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__AgNO3 + __H2S --> __Ag2S+ __HNO3
a)
2,1 --> 1,2
b)
1,2 --> 1,1
c)
1,2 --> 1,2
d)
1,2 --> 2,1
146.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H2 + __S --> __H2S
a)
1,1 --> 1
b)
2,2 --> 2
c)
1,2 --> 1
d)
1,2 --> 2
147.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__MnO2 + __HCl --> __MnCl2 + __H2O __Cl2
a)
4,1 --> 2,1,2
b)
1,2 --> 1,1,4
c)
1,4 --> 1,2,1
d)
1,4 --> 2,2,1
148.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__FeCl3 + __Ca(OH)2 --> __Fe(OH)3 + __CaCl2
a)
4,3--> 2,1
b)
3,2 --> 3,1
c)
2,3 --> 2,2
d)
2,3 --> 2,3
149.
Balance the following: Fluorine and Aluminum oxide react to produce Aluminum fluoride and Oxygen
a)
6,2,4,3
b)
3,4,2,6
c)
5,1,3,2
d)
3,2,4,3
150.

Balance the following:

Dicarbon hexahydride and Oxygen react to produce

Carbon dioxide and Dihydrogen monoxide

a)
1,6,2,3
b)
1,6,3,2
c)
2,7,4,6
d)
6,4,7,2
151.

Balance the following:

Aluminum nitrate and Carbonic acid react to form

Aluminum carbonate and Nitric acid

a)
4,1,2,5
b)
1,3,6,2
c)
2,1,3,6
d)
2,3,1,6
152.

PCl5 + ___ H2O → ___ HCl + H3PO4

a)

4, 5

b)

1, 6

c)

3, 8

d)

2,2

153.

Iron reacts with solid sulfur to produce iron(II) sulfide powder.


Remember to think about the charges of these and then criss-cross to find the correct compound formula

a)

Fe + S → Fe2S

b)

Fe + S → FeS

c)

Fe2 + S→ Fe2S2

d)

Fe + S2 → Fe2S

154.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2

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