Free Printable Chemical Reactions And Equation_LS

1.

What will the balanced equation be if you react:

CaCl₂ + NaOH

a)

CaCl₂ + 2 NaOH --> Ca(OH)₂ + 2 NaCl

b)

CaCl₂ + 2 NaOH --> CaOH + 2 NaCl

c)

CaCl₂ + 2 NaOH --> CaNa₂ + 2 ClOH

d)

no reaction

2.

Mark the indicators of a double displacement reaction.

a)

Water is formed

b)

gas is formed

c)

a precipitate is formed

d)

a phase change occurs

e)

none of these are correct

3.

What are the products for a reaction between KCl and AgNO₃

a)

KAg + ClNO₃

b)

KCl + AgNO₃

c)

KNO₃ + AgCl

d)

no reaction occurs

4.

What will the balanced equation be if you react:

What type of reaction is CaCl₂ + 2 NaOH --> Ca(OH)₂ + 2 NaCl

a)

Combination Reaction.

b)

Decomposition Reaction.

c)

Displacement Reaction.

d)

Double Displacement Reaction.

e)

Neutralization reaction

5.

Ammonia reacts with oxygen to form nitrogen and water. Write a balanced chemical equation for this reaction.

Add the state symbols for all the reactants and products.

a)

4NH3(g)+3O2(g)→2N2(g)+6H2O(l)

b)

2NH3+3CuO→N2+3Cu+3H2O

c)

NH3+3Cl2⟶NCl3+3HCl

d)

NH3+HCl⟶NH4Cl

6.

What will the balanced equation be if you react:

Ammonia reacts with oxygen to form nitrogen and water. Write a balanced chemical equation for this reaction.

2NH3 + O2 → 2NO + 3H2O

a)

Combination Reaction.

b)

Decomposition Reaction.

c)

Displacement Reaction.

d)

Double Displacement Reaction.

e)

Neutralization reaction

7.

Photosynthesis is a ______ reaction.

a)

Combination Reaction.

b)

Decomposition Reaction.

c)

Single Displacement Reaction.

d)

Double Displacement Reaction.

e)

Neutralization reaction

8.

This is the formula for photosynthesis:

6CO2 + 6H2O → 6O2 + C6H12O6

It is a ______ reaction

a)

Combination Reaction.

b)

Decomposition Reaction.

c)

Single Displacement Reaction.

d)

Double Displacement Reaction.

e)

Neutralization reaction

9.

How many molecules of water are in the photosynthesis equation?

a)

1 molecule

b)

2 molecules

c)

6 molecules

d)

12 molecules

10.

What are the products made by photosynthesis? Pick 2.

a)

carbon dioxide

b)

oxygen

c)

glucose

d)

water

11.

What side of the photosynthesis equation are the products of photosynthesis?

a)

right side

b)

left side

c)

over the arrow

12.

What side of the photosynthesis equation are the raw materials of photosynthesis?

a)

right side

b)

left side

c)

over the arrow

13.

How many molecules of glucose are in the photosynthesis equation?

a)

1 molecule

b)

2 molecules

c)

6 molecules

d)

12 molecules

14.

How many molecules of oxygen are in the photosynthesis equation?

a)

1 molecule

b)

2 molecules

c)

6 molecules

d)

12 molecules

15.

Look at the image. What does the arrow mean?

a)

equals

b)

yields

c)

makes

d)

This direction!

16.

Translate the following statement into chemical equation and then balance it :

Barium chloride solution reacts with aluminium sulphate solution to form a

precipitate of barium sulphate and aluminium chloride solution.

a)

3BaCl2 (aq) + Al2 (S04)2 (aq.) 3BaS04 (s) + 2AlCl3 (aq.)

b)

2 Al₂(SO₄)₃ + 6 BaCl₂ → 4 AlCl₃ + 3 Ba₂(SO₄)₂

c)

BaCl₂ + H₂SO₄ → BaSO₄ + HCl

d)

BaCl2 + Na2SO4 → BaSO4 + 2NaCl

17.

Translate the following statement into chemical equation and balance it: Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

3BaCl2 (aq) + Al2 (SO4) 3 (aq) →

2 AlCl3 (aq) + 3BaSO4(s)

The reaction is _____ reaction

a)

Combination Reaction.

b)

Decomposition Reaction.

c)

Single Displacement Reaction.

d)

Double Displacement Reaction.

e)

Neutralization reaction

18.

When potassium nitrate is heated, it decomposes into potassium nitrite and oxygen.

Write a balanced equation for this reaction and add the state symbols of the reactants and products.

a)

2KN03 (s) 2KN02 (s) + 02 (g)

b)

2Pb(NO3)2→2PbO+4NO2+O2

c)

2Cu(NO3)2(s) → 2CuO(s) + 4NO2(g) + O2(g).

d)

2NaNO3(heat)→2NaNO2+O2.

19.

On Heating/Thermal decompositon of Iron(Ii) Oxide Oxide:

$FeO\rightarrow$

a)

$2FeO\ \rightarrow\ O_{2\ }+\ 2Fe$

b)

$FeO\rightarrow\ O\ +\ Fe$

c)

$2FeO\ \rightarrow\ O_2\ +\ Fe_2$

20.

On Heating/Thermal decompositon of Oxides:

$Al_2O_{3\ }\rightarrow$

a)

$2\ Al_2O_{3\ }\rightarrow\ 3\ O_{2\ }+\ 4Al$

b)

$\ Al_2O_{3\ }\rightarrow\ \ O_{2\ }+\ 2Al$

c)

$\ Al_2O_{3\ }\rightarrow\ 3\ O+\ 2Al$

21.

What are the products of the following decomposition reaction? $metal\ chlorate\ \longrightarrow\ ??$

a)

element + element

b)

metal oxide + water

c)

metal chloride + oxygen

d)

metal oxide + carbon dioxide

e)

nonmetal oxide + water

22.

What are the products of the following decomposition reaction? $metal\ carbonate\ \longrightarrow\ ??$

a)

element + element

b)

metal oxide + water

c)

metal chloride + oxygen

d)

metal oxide + carbon dioxide

e)

nonmetal oxide + water

23.

What are the products of the following decomposition reaction? $metal\ hydroxide\ \longrightarrow\ ??$

a)

element + element

b)

metal oxide + water

c)

metal chloride + oxygen

d)

metal oxide + carbon dioxide

e)

nonmetal oxide + water

24.

What are the products of the following decomposition reaction?
$Fe_3P_2\ \longrightarrow\ ??$

a)

element + element

b)

metal oxide + water

c)

metal chloride + oxygen

d)

metal oxide + carbon dioxide

e)

nonmetal oxide + water

25.

What are the products of the following decomposition reaction? $Mg\left(ClO_3\right)_2\ \longrightarrow$

a)

element + element

b)

metal oxide + water

c)

metal chloride + oxygen

d)

metal oxide + carbon dioxide

e)

nonmetal oxide + water

26.

What are the products of the following decomposition reaction? $FeCO_3\ \longrightarrow\ ??$

a)

element + element

b)

metal oxide + water

c)

metal chloride + oxygen

d)

metal oxide + carbon dioxide

e)

nonmetal oxide + water

27.

What are the products of the following decomposition reaction? $Al\left(OH\ \right)_3\ \longrightarrow\ ??$

a)

element + element

b)

metal oxide + water

c)

metal chloride + oxygen

d)

metal oxide + carbon dioxide

e)

nonmetal oxide + water

28.

What are the products of the following decomposition reaction? $Fe\left(OH\right)_2\ \longrightarrow\ ??$

a)

$Fe\ +\ O\ +\ H$

b)

$FeO\ +\ H_2O$

c)

$Fe\ +\ O_2\ +\ H_2$

d)

$HFeO_3$

e)

$FeH_2\ +\ O_2$

29.

What are the products of the following decomposition reaction? $Li_2CO_3\ \longrightarrow\ ??$

a)

$Li\ +\ C\ +\ O$

b)

$Li_2O\ +\ CO_2$

c)

$Li\ +\ C\ +\ O_2$

d)

$Li\ +\ CO_3$

e)

$Li_4C+\ O_2$

30.

What are the products of the following decomposition reaction? $Ni\left(ClO_3\right)_3\ \longrightarrow\ ??$

a)

$Ni\ +\ Cl\ +\ O$

b)

$Ni_2O_3\ +\ ClO_2$

c)

$Ni\ +\ Cl_2\ +\ O_2$

d)

$NiCl_3\ +\ O_2$

e)

$Ni_2O_3+\ Cl_2$

31.

What are the products of the reaction: MgCO₃ ->?

a)

MgCO_{3 +}O₂

b)

MgO₊O₂

c)

MgO₊CO₂

d)

MgC ₊O₂

32.

In a chemical reaction

a)

The atoms of the reactants always stay together to form the products

b)

The atoms of the reactants unbond, rearrange, and then rebond to form the products

c)

New atoms are formed which combine to make the products

d)

Some atoms disappear while others multiply to form the products

33.

The left side of the equation below is called

a)

Products

b)

Reactants

34.

Which observation(s) might be used as evidence that a chemical reaction occurred?

a)

Color change

b)

Odor change

c)

change in temperature

d)

All of the above

35.

The rate of a chemical reaction is NOT affected by which of the following:

a)

temperature

b)

concentration

c)

particle size (surface area)

d)

All of these affect reaction rates

36.

What type of reaction is the following: $Zn\ +\ 2HCl\ \rightarrow\ ZnCl_2+H_2$

a)

Combination

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

37.

What type of reaction is the following: $BaCl_2+2KI\ \ \rightarrow\ 2KCl\ +\ BaI_2$

a)

Combination

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

38.

H₂+ O --> H₂O

a)

Synthesis/Combination

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

39.

The following reaction is an example of what reaction type?

CoCO₃ → CoO + CO₂

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

40.

Give one example each of a chemical reaction characterised by:

evolution of a gas

a)

Zn (s) + H2SO4 (aq) ---> ZnSO4 (aq)+ H2 (g)

b)

Pb(NO3)2 + 2KI → PbI2 + 2KNO3

c)

BaCl2+Na2SO4—>BaSO4+NaCl

d)

NH3(g) + HCl(g) —-> NH4Cl(s)

41.

Give one example each of a chemical reaction characterised by:

change in colour

a)

Zn (s) + H2SO4 (aq) ---> ZnSO4 (aq)+ H2 (g)

b)

Pb(NO3)2 + 2KI → PbI2 + 2KNO3

c)

BaCl2+Na2SO4—>BaSO4+NaCl

d)

NH3(g) + HCl(g) —-> NH4Cl(s)

42.

Give one example each of a chemical reaction characterised by:

formation of a precipitate

a)

Zn (s) + H2SO4 (aq) ---> ZnSO4 (aq)+ H2 (g)

b)

Pb(NO3)2 + 2KI → PbI2 + 2KNO3

c)

BaCl2+Na2SO4—>BaSO4+NaCl

d)

NH3(g) + HCl(g) —-> NH4Cl(s)

43.

Give one example each of a chemical reaction characterised by:

change in temperature

a)

Zn (s) + H2SO4 (aq) ---> ZnSO4 (aq)+ H2 (g)

b)

Pb(NO3)2 + 2KI → PbI2 + 2KNO3

c)

BaCl2+Na2SO4—>BaSO4+NaCl

d)

NH3(g) + HCl(g) —-> NH4Cl(s)

44.

Can result from adding or removing thermal energy

a)

explosion

b)

change of conservation

c)

change of state of matter

d)

Change of Newton's law

45.

The change of state from a gas to a liquid

a)

condensation

b)

deposition

c)

evaporation

d)

sublimation

46.

Temperature at which matter changes from liquid to solid

a)

freezing point

b)

melting point

c)

boiling point

d)

absolute zero

47.

Gas becomes solid without first becoming liquid

a)

sublimation

b)

deposition

c)

vaporization

d)

evaporation

48.

Solid becomes gas without first changing to liquid

a)

deposition

b)

sublimation

c)

evaporation

d)

condensation

49.

State the various characteristics of chemical reactions. What is the first statement of the audio clip?

a)

The various characteristics of chemical reaction are as follows:

b)

Effervescence of gas.

c)

Precipitate formation

d)

Colour Change.

50.

State the various characteristics of chemical reactions. What is the second statement of the audio clip?

a)

The various characteristics of chemical reaction are as follows:

b)

Effervescence of gas.

c)

Precipitate formation

d)

Colour Change.

51.

State the various characteristics of chemical reactions. What is the third statement of the audio clip?

a)

The various characteristics of chemical reaction are as follows:

b)

Effervescence of gas.

c)

Precipitate formation

d)

Colour Change.

52.

State the various characteristics of chemical reactions. What is the fourth statement of the audio clip?

a)

The various characteristics of chemical reaction are as follows:

b)

Effervescence of gas.

c)

Precipitate formation

d)

Colour Change.

Chemical Reactions And Equation_LS_8

Total questions: 52

Worksheet time: 28mins

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