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SALTS

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

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

2.

Salts can be prepared by reacting metals with acids. However, some metals will not react with acids to make salts. Which of the following metals will NOT react with acids?

a)

zinc

b)

iron

c)

magnesium

d)

copper

3.

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

4.

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

5.

Following 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

6.

Look at the following procedure steps!

1. add zinc metal into beaker

2. remove from heat and leave for a few days

3. pour sulfuric acid into 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

7.

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

a)

MgCl2

b)

CuSO4

c)

CaCO3

d)

KNO3

8.

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

9.

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

10.

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

11.

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

12.

Salts are compounds that have hundreds of different uses in everyday life.

Look at the following table!

Which number match 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.

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

15.

After titrating aqueous NaOH with dilute HCl without 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