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KS3 Y8 Topic 6 Reactions quiz

Total questions: 72

Worksheet time: 1hrs 8mins

Name
Class
Date
1.

The smallest particle of an element; made of electrons, protons, and neutrons

a)

Atoms

b)

Elements

c)

Molecules

d)

Products

2.

The process by which one or more substances change to produce one or more different substances

a)

Chemical Process

b)

Reactant

c)

Chemical Reaction

3.

The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically

a)

Atom

b)

Compound

c)

Molecule

4.

A substance produced during a chemical reaction

a)

Product

b)

Reactant

c)

Properties

5.

A substance that takes part in and undergoes change during a reaction

a)

Product

b)

Molecule

c)

Reactant

6.

A new substance with unique chemical and physical properties that is formed when two or more elements are chemically bonded during a chemical reaction

a)

Product

b)

Compound

c)

Molecule

d)

Atom

7.

A chemical reaction or process that absorbs heat from the surroundings

a)

Endothermic

b)

Exothermic

8.

A chemical reaction or process that releases heat.

a)

Endothermic

b)

Exothermic

9.

What is a chemical reaction?

a)

a change in matter when the molecules rearrange to make new molecules

b)

a change in matter when matter changes its form or appearance

c)

a change in matter when the physical appearance changes

d)

a very boring change in matter

10.

The reactants in the image above are:

a)

CH4 and 2 O2

b)

2 H2O and CO2

c)

All of these are reactants

d)

All of these are products

11.

The products in the image above are:

a)

CH4 and 2 O2

b)

2 H2O and CO2

c)

All of these are reactants

d)

All of these are products

12.

When energy like heat and light are given off in a chemical reaction it is called

a)

exothermic

b)

endothermic

c)

eccentric

d)

ectomorphic

13.

When energy is absorbed and taken in during a chemical reaction it is called

a)

exothermic

b)

endothermic

c)

eccentric

d)

ectomorphic

14.

How is a chemical change different from a physical change?

a)

there is no difference

b)

a physical change creates a new substance

c)

a chemical change creates a new substance

15.

What does the Law of Conservation of Mass state

a)

The mass of the reactants must be close to the mass of the products

b)

The atoms in the reactants will be different than the atoms in the products

c)

Matter is neither created or destroyed, therefore the number of atoms in reactants will be identical to the number of atoms in the products

d)

Atoms of the reactants are not rearranged, therefore the number of atoms will be different.

16.

If the mass of one reactant of a chemical reaction was 32grams and the mass of the second reactant of the same chemical reaction was 8 grams then what would be the mass of the products?

a)

40 grams

b)

32 grams

c)

42 grams

d)

8 grams

17.

What are the atoms of each element in this chemical formula 2Na2SO4

a)

2 Na, 0 S, 4 O

b)

2 Na, 1 S, 4 O

c)

4 Na, 1 S, 4 O

d)

4 Na, 2 S, 8 O

18.

How many atoms of each element on the reactant side of the equation?

a)

4 C, 6 H, 14 O

b)

2 C, 6 H, 2 O

c)

4 C, 12 H, 7 O

d)

4 C, 12 H, 14 O

19.

What is produced when a fuel burns in a very good supply of oxygen?

a)

Carbon monoxide and water

b)

Carbon and water

c)

Carbon dioxide and water

d)

Oxygen and water

20.

Copper oxide and carbon dioxide are made when copper carbonate is heated strongly. Which is a product?

a)

Heat

b)

Copper carbonate

c)

Copper oxide

d)

Oxygen

21.

What is another name for combustion?

a)

Reduction

b)

Burning

c)

James

d)

Displacement

22.

What is a chemical reaction?

a)

a change in matter when the molecules rearrange to make new molecules

b)

a change in matter when matter changes its form or appearance

c)

a change in matter when the physical appearance changes

d)

a very boring change in matter

23.
_K + _Cl2 →_KCl
a)
2 K + 16 Cl2 → 8 KCl
b)
2 K + 1 Cl2 → 2 KCl
c)
3 K + 4 Cl2 → 3 KCl
d)
1 K + 1 Cl2 →1 KCl
24.
Balance this equation,            Al2O3 ---> Al + O2 
a)
Cannot be balanced
b)
2Al2O3 ---> 2Al + 3O2 
c)
2Al2O3 ---> 4Al + 3O2 
d)
3Al2O3 ---> 2Al + O2 
25.
Balance this equation:  H2 + N2 → NH3
a)
 H2 + 4N2 → NH3
b)
 H2 + 3N2 → 2NH3
c)
 3H2 + N2 → 2NH3
d)
 2H2 + 2N2 → 2NH3
26.

Balancing this reaction:

____ CH4 + ____ O2 ---> ___ CO2 + ____ H2O

a)

2,1,3,1

b)

1,2,1,2

c)

1,2,2,1

d)

2,1,1,2

27.

What type of reaction involves the breaking down of a substance into simpler substances?

a)

Single Displacement Reaction

b)

Double Displacement Reaction

c)

Synthesis Reaction

d)

Decomposition Reaction

28.

Which is an example of a chemical change?

a)

water freezing to form ice

b)

sugar dissolving in water

c)

petrol burning in a car engine

d)

a piece of metal expanding when it is heated

29.
Which of the following is an example of a chemical change?
a)

rusting of metal

b)
painting a house
c)
washing a dog
d)
tearing up a newspaper
30.

Which one shows that a chemical reaction has occurred?

a)

dissolving

b)

melting

c)

releasing gas

d)

bending

31.

Which contains only elements?

a)

A

b)

B

c)

C

d)

D

32.

Which contains a mixture?

a)

A

b)

B

c)

C

d)

D

33.

Sodium reacts with chlorine to produce sodium chloride. Choose the correct word equation.

a)

sodium chloride → chlorine + sodium

b)

sodium + carbon dioxide → sodium carbonate

c)

sodium + chlorine → sodium chloride

34.

Magnesium burns in oxygen to produce magnesium oxide.

Choose the correct word equation.

a)

magnesium + oxygen → magnesium oxide

b)

magnesium + carbon dioxide → oxygen

c)

magnesium + oxygen → carbon dioxide

35.

What does reactivity mean?

a)

Reactivity is how angry someone is

b)

Reactivity is a measure of how quickly a substance melts

c)

Reactivity is the tendency of something to take part in a chemical reaction

36.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
37.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
38.

During a chemical reaction, atoms ____________ to form new substances.

a)

Change

b)

Switch

c)

Turn into new atoms

d)

Rearrange

39.

Which symbol in a chemical equation separates the reactants from the products?

a)

=

b)

→

c)

>

d)

+

40.

30 grams of lead oxide and 15 grams of ammonia react completely to produce solid lead, nitrogen gas, and liquid water. What will be approximate mass of all three products?

a)

10 g

b)

15 g

c)

45 g

d)

450 g

41.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
42.
How many elements are in H2O?
a)
1
b)
2
c)
3
d)
4
43.
Which of the following models best demonstrates a balanced chemical equation?
a)
F
b)
G
c)
H
d)
J
44.

Which metal reacts vigorously with water, producing hydrogen gas and forming a hydroxide?

a)

Sodium

b)

Copper

c)

Zinc

d)

Gold

45.

When metal reacts with oxygen, what type of compound is typically formed?

a)

Oxide

b)

Chloride

c)

Sulfide

d)

Nitrate

46.

Select the keyword that matches the description below.

"A reaction involving a more reactive metal removing a less reactive metal from a compound"

a)

Displacement

b)

Reduction

c)

Oxidation

d)

Reactivity Series

47.

Select the keyword that matches the description below.

"A reaction involving a metal reacting with oxygen to produce a metal oxide"

a)

Displacement

b)

Reduction

c)

Oxidation

d)

Reactivity Series

48.

Select the keyword that matches the description below.

"A list showing the arrangement of metals in order of reactivity"

a)

Displacement

b)

Reduction

c)

Oxidation

d)

Reactivity Series

49.

Pick the odd one out

a)

Hydrogen

b)

Potassium

c)

Gold

d)

Iron

50.

Pick the odd one out

a)

Gold

b)

Silver

c)

Copper

d)

Potassium

51.

Pick the odd one out

a)

Gold

b)

Potassium

c)

Lithium

d)

Magnesium

52.

Reaction or no reaction?

Lead + copper sulphate ==>

a)

Reaction

b)

No reaction

53.

Reaction or no reaction?

Lead + iron sulphate ==>

a)

Reaction

b)

No reaction

54.

Reaction or no reaction?

Zinc + copper sulphate ==>

a)

Reaction

b)

No reaction

55.

Reaction or no reaction?

Copper + copper sulphate ==>

a)

Reaction

b)

No reaction

56.

How are metals found below Hydrogen in the reactivity series extracted?

a)

Reduction

b)

Oxidation

c)

No reaction

57.

How are metals below carbon extracted?

a)

Oxidation

b)

Reduction

c)

Displacement

58.

Using your understanding of the reactivity, why is gold used to make jewellery?

a)

Unreactive

b)

Shiny

c)

Malleable

d)

High m.p.

59.

Put the metals in order of their reactivity from most reactive to least reactive.

a)

Magnesium> Iron> Tin> Silver

b)

Magnesium> Iron> Silver> Tin

c)

Iron> Magnesium> Silver> Tin

d)

Magnesium> Silver> Iron> Tin

60.

What is the order of reactivity of these metals from most to least reactive?

a)

V>W>Y>X>Z

b)

W>X>Z>V>Y

c)

Z>X>V>W>Y

d)

Z>X>Y>W>V

61.

Predict the products of this reaction.

HCl + Ca(OH)2

a)

NaCl

b)

CaCl2

c)

CaCl2 + H2O

d)

H2O

62.

Complete the following reaction:

Hydrochloric acid + magnesium hydroxide -->

a)

Magnesium chloride + water

b)

Magnesium + water

c)

Magnesium chloride + hydrogen

d)

Magnesium chloride + water + carbon dioxide

63.

.............................. + sodium hydroxide --> sodium chloride + water

a)

Nitric acid

b)

Sulphuric acid

c)

Hydrochloric acid

d)

Ethanoic acid

64.
Magnesium + sulphuric acid --> ?
a)
magnesium sulfate + water
b)
magnesium sulfate + hydrogen
c)
magnesium chloride + hydrogen
d)
magnesium chloride + water
65.

nitric acid + magnesium --> ?

a)

magnesium nitrate + carbon dioxide gas + water

b)

magnesium nitrate + water

c)

magnesium nitrate + hydrogen gas

66.

sulfuric acid + sodium hydroxide --> ?

a)

sodium sulfate + carbon dioxide gas + water

b)

sodium sulfate + water

c)

sodium sulfate + hydrogen gas

67.

nitric acid + magnesium hydroxide --> ?

a)

magnesium nitrate + carbon dioxide gas + water

b)

magnesium nitrate + water

c)

magnesium nitrate + hydrogen gas

68.

What are the products of the reaction of: Potassium + Hydrochloric acid

a)

Potassium chloric + hydrogen

b)

Potassium chloride + water

c)

Potassium chloride + hydrogen

d)

Potassium chloric + water

69.

What are the products of the reaction of: Lithium + Sulfuric acid

a)

Lithium sulfate + hydrogen

b)

Lithium chloride + water

c)

Lithium chloride + hydrogen

d)

Lithium sulfate + water

70.

What are the products of the reaction of: Sodium carbonate + Nitric acid

a)

Sodium nitrate + hydrogen + water

b)

Sodium nitrate + water

c)

Sodium nitrate + hydrogen

d)

Sodium nitrate + water + carbon dioxide

71.

What are the products of the reaction of: Sodium carbonate + Sulfuric acid

a)

Sodium sulfate + hydrogen + water

b)

Sodium sulfate + water

c)

Sodium sulfate + hydrogen

d)

Sodium sulfate + water + carbon dioxide

72.

When 10g of metal reacts with oxygen, how much will the product weigh?

a)

Less than 10g

b)

10g

c)

More than 10g

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