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Type of Reaction

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.

In a ___________change, a substance changes into a different substance.

a)

Physical

b)

Chemical

2.

What are reactants?

a)

The chemicals that start the reaction.

b)

The chemicals that the reaction produced.

c)

The chemicals that are on the right side of the arrow.

3.
The reactants are on the left side of the chemical equation.
a)
True
b)
False
4.

What are products?

a)

The chemicals that start the reaction.

b)

The chemicals that the reaction produced.

c)

The chemicals that are on the left side of the arrow.

5.

The products are on the right side of the chemical equation.

a)

True

b)

False

6.

Chemical reaction that involve two reactants into one product

a)
Decomposition
b)

Combination/Synthesis

c)

Combustion/Burning

d)

Single Displacement/Replacement

7.

Chemical reaction that involves one reactant into several products.

a)
Decomposition
b)

Combination/Synthesis

c)

Combustion/Burning

d)

Single Displacement/Replacement

8.

Chemical reaction that involves one elements replaces another in a compound.

a)

Combination/Synthesis

b)

Combustion/Burning

c)

Single Displacement/Replacement

d)

Double Displacement/Replacement

9.

Chemical reaction in which the metal ions in the two compounds switch.

a)

Combination/Synthesis

b)

Combustion/Burning

c)

Single Displacement/Replacement

d)

Double Displacement/Replacement

10.

What is the type of reaction shown above?

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement/Replacement

d)

Double Displacement/Replacement

11.
What is decomposition?
a)
putting substances together
b)
breaking substances apart
c)
element replacing another element in a compoud
d)
burning of a subtance
12.
Which of the following is the general formula for a decomposition reaction?
a)
A + B  → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
13.

What reaction has the following general formula:

AB --> A + B

a)

Combination

b)

Decomposition

c)

Single Dispalcement/Replacement

d)

Double Dsipalcement/Replacement

14.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination

b)

Decomposition

c)

Single Displacement/Replacement

d)

Double Displacement/Replacement

15.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

16.

What reaction has the following general formula:

A + B --> AB

a)

Combination

b)

Decomposition

c)

Single Displacement/Replacement

d)

Combustion/Burning

17.
Which chemical reaction takes place when 2 substances react to form a single product?
a)
Decomposition
b)

Double Displacement/Replacement

c)

Single Displacement/Replacement

d)

Combination/Synthesis

18.

Which element is necessary in the reactants of a combustion reaction?

a)

oxygen

b)

hydrogen

c)

carbon

d)

water

19.

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

a)

Single Displacement Reaction

b)

Double Displacement Reaction

c)

Combination/Synthesis Reaction

d)

Decomposition Reaction

20.

What type of reaction involves 2 substances combining to form 1 new compound?

a)

Decomposition Reaction

b)

Single Displacement Reaction

c)

Double Displacement Reaction

d)

Combination Reaction

21.

What are the reactants in the chemical equation pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

22.

What are the products of the chemical reaction pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

23.

What is the general reaction scheme for a single displacement/replacement reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

24.

Which symbol shows a chemical reaction has occured?

a)

A

b)

B

c)

C

d)

D

25.

Identify the product(s) in this word equation

a)

Sodium

b)

Sodium chloride

c)

Sodium and Chlorine

d)

Sodium and sodium chloride

26.

In this chemical reaction zinc is a...

a)

Product

b)

Reactant

c)

Neither

d)

non metal

27.

The new substances formed in a chemical reaction are called

a)

Reactants

b)

Atoms

c)

Products

d)

Reagents

28.
What does this word equation represent: Iron + oxygen → Iron oxide
a)
A physical change in iron (nothing new gets made)
b)
A chemical reactino between iron and oxygen, where rust (iron oxide) is produced
c)
A chemical reaction between iron and rust, where oxygen is produced
d)
A physical change between iron and oxygen that forms a red color
29.

How many products are there in this reaction?

a)

One

b)

Two

c)

Three

d)

Four

30.

There is more than one answer.

In a word equation the REACTANTS

a)

Are written on the left hand side of the arrow

b)

Are used up in a chemical reaction

c)

Are always the same

d)

Are the substances that react together

31.

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

d)

sodium + chloride → sodium chloride

32.

Magnesium + ________ → magnesium oxide

What is missing?

a)

Hydrogen

b)

Sulphur

c)

Oxygen

d)

Oxide

33.

Copper oxide + _______________ → copper sulphate + water

What is missing?

a)

sulphuric acid

b)

hydrochloric acid

c)

hydrogen

d)

oxygen

34.

In a word equation, what should be used when writing the reactants and products?

a)

Words only

b)

A mixture of words and chemical symbols

c)

Chemical symbols only

d)

chemical symbols and state symbols

35.

Iron (a grey metal) reacts with sulfur (a smelly yellow solid) to produce iron sulfide (a black solid).

a)

iron + sulfur →\rightarrow iron sulfide

b)

iron + sulfur →\rightarrow iron sulfur

c)

iron + sulfide →\rightarrow iron sulfide

d)

iron + sulfur →\rightarrow iron sulfite

36.

Magnesium (a grey metal) can be burned in air to produce magnesium oxide (a white powder). Which is the correct word equation for the reaction that happens?

a)


magnesium + oxygen →\rightarrow iron oxide

b)

magnesium + air gases →\rightarrow magnesium oxide

c)

magnesium + oxygen →\rightarrow magnesium oxide

d)

magnesium + air gases →\rightarrow white powder

37.

Nitrogen and hydrogen react together to form ammonia. Give the word equation for the reaction.

a)

Ammonia →\rightarrow Nitrogen + Hydrogen

b)

Nitrogen + hydrogen →\rightarrow Ammonia

c)

Nitrogen →\rightarrow Ammonia + Hydrogen

d)

Hydrogen + Ammonia →\rightarrow Nitrogen

38.

What is neutralisation?

a)

This is a reaction between an acid and water to form salt and base.

b)

This is a reaction between an acid and base to form salt and water.

c)

This is a reaction between a base and salt to form water and acid.

d)

This is a reaction between salt and water to form acid and base

39.

When an acid and a base react, a ______________ reaction takes place.

a)

Displacement

b)

Oxidation

c)

Neutralisation

d)

Transamination

40.

A decomposition reaction can be recognized because it has...

a)

only one product

b)

only one reactant

c)

2 or more reactants and 2 or more products

d)

the presence of a catalyst

41.

A chemical change in which two substances react to form a new substance is a ____________________________.

a)

decomposition reaction

b)

combination reaction

c)

displacement reaction

d)

combustion reaction

42.

A combination reaction can be recognized because it has...

a)

only one product

b)

only one reactant

c)

2 or more reactants and 2 or more products

d)

salt and water produced

43.
Another term for burning is
a)

displacement

b)

neutralisation

c)

combustion

d)

oxidation

44.
Is combustion a reversible reaction?
a)
Yes.
b)
No.
45.

Which substance is a reactant in every combustion reaction?

a)

carbon dioxide

b)

hydrogen

c)

oxygen

d)

water

46.

Which type of reaction is combustion?

a)

combination

b)

neutralisation

c)

oxidation

d)

displacement

47.

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

(i) Single Displacement reaction

(ii) Decomposition reaction

(iii) Combination reaction

(iv) Double displacement reaction

a)

(a) (i) only

b)

(b) (ii) only

c)

(c) (iv) only

d)

(d) (ii) and (iv)

48.

When ammonium dichromate reacts with zinc nitride, what are the products?

a)

zinc nitrate and ammonium chromate

b)

zinc dichromate and ammonium nitrate

c)

zinc chromate and ammonium nitride

d)

zinc dichromate and ammonium nitride

49.
A neutralization reaction will (almost) always produce...
a)

water and salt

b)
water
c)
salt
d)

water and carbon dioxide

50.
Which of the following models best demonstrates a balanced chemical equation?
a)
F
b)
G
c)
H
d)
J

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