Acid and Bases

• Science
• Lower Secondary (Key Stage 3)

Acid and Bases

In a neutralisation reaction an acid and alkali react to form a salt and water.

Chemical Reactions

Acid + Alkali                    Salt + water  

Metal + oxygen                      metal oxide  

Metal + Water               metal hydroxide + hydrogen

Metal + Acid              Salt + hydrogen  

Naming Salts: A salt has two parts to its name.

The second word comes from the acid in the reaction.

sodium hydroxide + hydrochloric acid

sodium chloride + water

Naming Salts: A salt has two parts to its name.

The second word comes from the acid in the reaction. There are three commonly used acids in science.

Hydrochloric acid                    chloride

Nitric acid                                  nitrate

Sulfuric acid                              sulfate

The reactants of neutralisation are acid and water.

1. True
2. False

What causes fizzing when a metal reacts with an acid?

1. Oxygen being produced
2. Hydrogen gas being produced
3. Salt being formed
4. Carbon dioxide being produced

What is formed when a metal reacts with an acid?

1. Salt
2. Water
3. Oxygen
4. Sugar

Which gas is produced when a metal reacts with an acid?

1. Nitrogen
2. Carbon dioxide
3. Oxygen
4. Hydrogen

Name the salt formed:

sodium + nitric acid

1. sodium nitrate
2. sodium chloride
3. potassium nitrate
4. potassium chloride

Name the salt formed:

lithium + sulfuric acid

1. magnesium chloride
2. lithium chloride
3. magnesium sulfate
4. lithium sulfate

Name the salt formed:

copper + hydrochloric acid

1. sodium chloride
2. copper chloride
3. sodium nitrate
4. copper nitrate

What is the pH of acid?

1. 1-6.9
2. 7.1-14
3. 7

Name the salt formed:

potassium hydroxide + hydrochloric acid

1. sodium chloride
2. magnesium chloride
3. lithium chloride
4. potassium chloride

Name the salt formed:

magnesium hydroxide + hydrochloric acid

1. sodium chloride
2. magnesium chloride
3. lithium chloride
4. potassium chloride

Name the salt formed:

magnesium oxide + hydrochloric acid

1. sodium chloride
2. magnesium chloride
3. lithium chloride
4. potassium chloride

Name the salt formed:

magnesium oxide + nitric acid

1. sodium nitrate
2. magnesium nitrate
3. lithium nitrate
4. potassium nitrate

Name the salt formed:

sodium oxide + nitric acid

1. sodium nitrate
2. magnesium nitrate
3. lithium nitrate
4. potassium nitrate

Name the salt formed:

lithium oxide + nitric acid

1. sodium nitrate
2. magnesium nitrate
3. lithium nitrate
4. potassium nitrate

Name the salt formed:

lithium hydroxide + hydrochloric acid

1. lithium nitrate
2. lithium sulfate
3. lithium chloride

Name the salt formed:

lithium hydroxide + nitric acid

1. lithium nitrate
2. lithium sulfate
3. lithium chloride

Name the salt formed:

sodium hydroxide + nitric acid

1. sodium nitrate
2. sodium sulfate
3. sodium chloride

Name the salt formed:

sodium hydroxide + sulfuric acid

1. sodium nitrate
2. sodium sulfate
3. sodium chloride

A salt made with nitric acid will be a...

1. Chloride
2. Nitrate
3. Sulfate

Name the salt formed:

potassium hydroxide + hydrochloric acid

1. potassium nitrate
2. potassium sulfate
3. potassium chloride

A salt made with hydrochloric acid will be a...

1. Chloride
2. Nitrate
3. Sulfate

Name the salt formed:

potassium hydroxide + sulfuric acid

1. potassium nitrate
2. potassium sulfate
3. potassium chloride

A salt made with sulfuric acid will be a...

1. Chloride
2. Nitrate
3. Sulfate

Name the salt formed:

sodium oxide + nitric acid

1. sodium nitrate
2. sodium chloride
3. potassium nitrate
4. potassium chloride

Hydrochloric acid forms a...

1. Nitrate
2. Chloride
3. Sulfate
4. Oxide

Name the salt formed:

lithium hydroxide + sulfuric acid

1. magnesium chloride
2. lithium chloride
3. magnesium sulfate
4. lithium sulfate

Name the salt formed:

copper hydroxide + hydrochloric acid

1. sodium chloride
2. copper chloride
3. sodium nitrate
4. copper nitrate

The reaction of an acid and alkali is called...

1. Combustion
2. Displacement
3. Neutralisation
4. Oxidation

Which acid is found in citrus fruits?

1. Sulfuric acid
2. Citric acid
3. Acetic acid
4. Nitric acid

How do acids for example vinegar taste?

1. Sour
2. Sweet

When acids are concentrated they are

1. Irritant
2. Corrosive
3. Strong
4. Weak

When acids are diluted they are

1. Irritant
2. Corrosive
3. Strong
4. Weak

How does diluting an acid affect its strength?

1. It makes the acid more reactive
2. It increases the strength of the acid
3. It decreases the strength of the acid
4. It has no effect on the strength