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Worksheets

Chemistry

Total questions: 29

Worksheet time: 15mins

Name
Class
Date
1.

The table shows the salts that can be formed from the acid. Which gives the correct salts formed from the acid?

a)

1, 2 and 3

b)

1 and 2

c)

2 and 3

d)

1 only

2.

Look at the following word equation!

nitric acid + magnesium carbonate = _______ + _______ + _______.


What is the missing product in the reaction between nitric acid and magnesium carbonate?

a)

magnesium nitrate + water

b)

magnesium oxide + water

c)

magnesium oxide + water + hydrogen

d)

magnesium nitrate + water + carbon dioxide

3.

What happens when an acid reacts with metal oxide?

a)

salt and water are formed

b)

metal hydride is formed

c)

oxyacid will be formed

d)

salt and hydrogen gas are formed

4.

Following the word equations are given:

potassium hydroxide + nitric acid = potassium nitrate + water. sodium oxide + water = sodium hydroxide


Which are base and alkali from the reaction above, respectively?

a)

sodium hydroxide; sodium oxide

b)

sodium oxide; potassium hydroxide

c)

potassium hydroxide; sodium oxide

d)

potassium nitrate; sodium hydroxide

5.

Look at the following procedure steps!

1. add zinc metal into the beaker;

2. remove from heat and leave for a few days;

3. pour sulfuric acid into the beaker;

4. Pour the mixture into evaporating dish and heat gently.

Budi wants to make a salt using zinc metal and sulfuric acid. Which is the correct order of the procedure steps? *

a)

1 - 4 - 3 - 2

b)

4 - 3 - 2 - 1

c)

3 - 1 - 4 - 2

d)

3 - 4 - 1 – 2

6.

Which gives the correct formula of the example of salt that formed from hydrochloric acid?

a)

MgCl2

b)

CuSO4

c)

CaCO3

d)

KNO3

7.

Alkalis react with acids and neutralize them.


Which of the following is the correct word equation representing neutralization reaction?

a)

sodium hydroxide + hydrochloric acid = sodium chloride + water

b)

sodium oxide + water = sodium hydroxide

c)

copper carbonate + nitric acid = copper nitrate + water + carbon dioxide

d)

ammonia + hydrochloric acid = ammonium chloride

8.

Which one of the following salts is used to help crops grow well?

a)

magnesium carbonate

b)

copper sulfate

c)

ammonium nitrate

d)

calcium sulfate

9.

When solid X is added to dilute sulfuric acid, an aqueous solution of a sulfate salt is produced. What could solid X be?

a)

Copper

b)

Magnesium hydroxide

c)

Silver

d)

Zinc chloride

10.

A metal compound reacts with dilute hydrochloric acid to produce effervescence.


The gas evolved extinguishes a burning candle. If one of the compounds formed is calcium chloride. What is the name of the metal compound?

a)

calcium carbonate

b)

calcium hydroxide

c)

calcium oxide

d)

calcium sulfate

11.

How could you use iron oxide to make iron chloride?

a)

iron oxide is reacted with sulfuric acid

b)

iron oxide is reacted with hydrochloric acid

c)

iron oxide is reacted with nitric acid

d)

iron oxide is reacted with water

12.

Salts are compounds that have hundreds of different uses in everyday life. Look at the following table! Which number matches the salt with its uses?

a)

1

b)

2

c)

3

d)

4

13.

How do you remove the water to leave solid copper sulfate crystals?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Dissolving

14.

How do you separate an excess insoluble reactant from a solution?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Dissolving

15.

Which two chemicals could you react to make only potassium chloride and water?

a)

Potassium and hydrochloric acid

b)

Potassium oxide and sulfuric acid

c)

Potassium hydroxide and hydrochloric acid

d)

Potassium and sulfuric acid

16.

After titrating aqueous NaOH with dilute HCl without the indicator, what is my next step to obtain a sample of NaCl?

a)

Filtration

b)

Repeat the titration

c)

Evaporation to dryness

d)

Evaporate to saturation, then cool the solution

17.

Complete the following word equation: Metal carbonate + acid -->

a)

Salt and water

b)

Salt and hydrogen

c)

Salt and carbon dioxide

d)

Salt, water, and carbon dioxide

18.

The chemical industry makes hundreds of thousands of tons of different salts. Many methods for making salt starts with acids. Salts made from carbonic acid are called _____.

a)

chlorides

b)

sulfates

c)

nitrates

d)

carbonates

19.

Look at the following equation! Sulfuric acid H2SO4(aq) + X CuO(s) --> Y CuSO4(aq) + water H2O(aq). What are X and Y compounds, respectively?

a)

cobalt oxide and cobalt sulfite

b)

cobalt oxide and cobalt sulfate

c)

copper oxide and copper sulfite

d)

copper oxide and copper sulfate

20.

Which acid is needed to make sodium chloride from sodium hydroxide?

a)

hydrochloric acid

b)

phosphoric acid

c)

nitric acid

d)

sulfuric acid

21.

Word equation:

the reaction between magnesium and sulfuric acid

a)

magnesium + sulfuric acid → magnesium sulfate + water

b)

aluminium + sulfuric acid → aluminium sulfate + water

c)

potassium hydroxide + nitric acid → potassium nitrate + water

d)

copper carbonate + hydrochloric acid → copper chloride+ carbon dioxide + water

22.

Word equation:

the reaction between aluminium and sulfuric acid

a)

magnesium + sulfuric acid → magnesium sulfate + water

b)

aluminium + sulfuric acid → aluminium sulfate + water

c)

potassium hydroxide + nitric acid → potassium nitrate + water

d)

copper carbonate + hydrochloric acid → copper chloride+ carbon dioxide + water

23.

Word equation:

the reaction between potassium hydroxide and nitric acid

a)

magnesium + sulfuric acid → magnesium sulfate + water

b)

aluminium + sulfuric acid → aluminium sulfate + water

c)

potassium hydroxide + nitric acid → potassium nitrate + water

d)

copper carbonate + hydrochloric acid → copper chloride+ carbon dioxide + water

24.

Word equation:

the reaction between copper carbonate and hydrochloric acid

a)

magnesium + sulfuric acid → magnesium sulfate + water

b)

aluminium + sulfuric acid → aluminium sulfate + water

c)

potassium hydroxide + nitric acid → potassium nitrate + water

d)

copper carbonate + hydrochloric acid → copper chloride+ carbon dioxide + water

25.

Name the salt formed:

citric acid and calcium carbonate

a)

calcium citrate

b)

aluminium nitrate

c)

ammonium chloride

d)

ammonium sulfate

26.

Name the salt formed:

nitric acid and aluminium

a)

calcium citrate

b)

aluminium nitrate

c)

ammonium chloride

d)

ammonium sulfate

27.

Name the salt formed:

hydrochloric acid and ammonia

a)

calcium citrate

b)

aluminium nitrate

c)

ammonium chloride

d)

ammonium sulfate

28.

Name the salt formed:

ammonium hydroxide and sulfuric acid

a)

calcium citrate

b)

aluminium nitrate

c)

ammonium chloride

d)

ammonium sulfate

29.

Look at the following procedure steps!


1. Filter off the excess zinc. The filtrate is a solution of the zinc sulfate.

2. Add the zinc to the sulfuric acid an a flask so that the zinc is in the excess.

3. Dry the crystals between the sheets of filter paper.

4. Put the filtrate into an evaporating basin and evaporate the water until the crystallisation point is reached.

Kamila wants to make a salt using zinc metal and sulfuric acid.


Which is the correct order of the procedure steps?

a)

2 - 4 - 1 - 3

b)

2 - 3 - 1 - 4

c)

2 - 1 - 4 - 3

d)

2 - 1 - 3 - 4