Characteristic Properties of Acids & Bases

1

Which statements are properties of an acid?
1 reacts with ammonium sulfate to form ammonia
2 turns red litmus blue

1

Which property is NOT characteristic of a base?

1

Three liquids, P, Q and R, are added to a mixture of hydrochloric acid and Universal Indicator solution.
The following observations are made.
P the colour of the indicator turns purple.
Q the colour of the indicator does not change.
R there is effervescence and the indicator turns blue.

What are P, Q and R?

1

A sting from insect X has a pH of 6 and a sting from insect Y has a pH of 8.
The table shows the pH of four substances.

Which substances are used to treat the two stings?

1

Hydrochloric acid is used to clean metals.
The acid reacts with the oxide layer on the surface of the metal, forming a salt and water.

Which word describes the metal oxide?

1

Which statement is NOT correct?

1

Which reaction is NOT characteristic of an acid?

1

Which equation for the reaction between sodium carbonate and dilute hydrochloric acid is correct?

1

Which substance is the most acidic?

1

The graph shows how the pH of soil in a field changes over time.
At which point was the soil neutral?

1

A colourless solution is tested by the following reactions.

Which reaction is not characteristic of an acid?

1

Which statements about alkalis are correct?
1 When reacted with an acid, the pH of the alkali increases.
2 When tested with litmus, the litmus turns blue.
3 When warmed with an ammonium salt, ammonia gas is given off.

1

Which statements about alkalis are correct?
1 When reacted with an acid, the pH of the alkali increases.
2 When tested with litmus, the litmus turns blue.
3 When warmed with an ammonium salt, ammonia gas is given off.

1

Which are properties of an acid?
1 reacts with ammonium sulfate to form ammonia
2 turns red litmus blue

1

Carbon dioxide is produced when
X reacts with ethanol.
Y reacts with sodium carbonate.

What are X and Y?

1

Ant stings hurt because of the methanoic acid produced by the ant.

Which substance could, most safely, be used to neutralise the acid?

1

Which statement about the reaction of acids is correct?

1

Barium hydroxide is an alkali. It reacts with hydrochloric acid.

How does the pH of the hydrochloric acid change as an excess of aqueous barium hydroxide is added?

1

A gas is escaping from a pipe in a chemical plant.
A chemist tests this gas and finds that it is alkaline.

What is this gas?

1

The graph shows how the pH changes as an acid is added to an alkali.
acid + alkali → salt + water

Which letter represents the area of the graph where both acid and salt are present?

Quiz on the properties of acid and bases.

Characteristic Properties of Acids & Bases

Characteristic Properties of Acids & Bases

Which statements are properties of an acid? 1 reacts with ammonium sulfate to form ammonia 2 turns red litmus blue

Which property is NOT characteristic of a base?

A sting from insect X has a pH of 6 and a sting from insect Y has a pH of 8. The table shows the pH of four substances. Which substances are used to treat the two stings?

Hydrochloric acid is used to clean metals. The acid reacts with the oxide layer on the surface of the metal, forming a salt and water. Which word describes the metal oxide?

Which statement is NOT correct?

Which reaction is NOT characteristic of an acid?

Which equation for the reaction between sodium carbonate and dilute hydrochloric acid is correct?

Which substance is the most acidic?

The graph shows how the pH of soil in a field changes over time. At which point was the soil neutral?

A colourless solution is tested by the following reactions. Which reaction is not characteristic of an acid?

Which statements about alkalis are correct? 1 When reacted with an acid, the pH of the alkali increases. 2 When tested with litmus, the litmus turns blue. 3 When warmed with an ammonium salt, ammonia gas is given off.

Which statements about alkalis are correct? 1 When reacted with an acid, the pH of the alkali increases. 2 When tested with litmus, the litmus turns blue. 3 When warmed with an ammonium salt, ammonia gas is given off.

Which are properties of an acid? 1 reacts with ammonium sulfate to form ammonia 2 turns red litmus blue

Carbon dioxide is produced when X reacts with ethanol. Y reacts with sodium carbonate. What are X and Y?

Ant stings hurt because of the methanoic acid produced by the ant. Which substance could, most safely, be used to neutralise the acid?

Which statement about the reaction of acids is correct?

Barium hydroxide is an alkali. It reacts with hydrochloric acid. How does the pH of the hydrochloric acid change as an excess of aqueous barium hydroxide is added?

A gas is escaping from a pipe in a chemical plant. A chemist tests this gas and finds that it is alkaline. What is this gas?

The graph shows how the pH changes as an acid is added to an alkali. acid + alkali → salt + water Which letter represents the area of the graph where both acid and salt are present?

Which statements are properties of an acid?
1 reacts with ammonium sulfate to form ammonia
2 turns red litmus blue

A sting from insect X has a pH of 6 and a sting from insect Y has a pH of 8.
The table shows the pH of four substances.

Which substances are used to treat the two stings?

Hydrochloric acid is used to clean metals.
The acid reacts with the oxide layer on the surface of the metal, forming a salt and water.

Which word describes the metal oxide?

The graph shows how the pH of soil in a field changes over time.
At which point was the soil neutral?

A colourless solution is tested by the following reactions.

Which reaction is not characteristic of an acid?

Which statements about alkalis are correct?
1 When reacted with an acid, the pH of the alkali increases.
2 When tested with litmus, the litmus turns blue.
3 When warmed with an ammonium salt, ammonia gas is given off.

Which statements about alkalis are correct?
1 When reacted with an acid, the pH of the alkali increases.
2 When tested with litmus, the litmus turns blue.
3 When warmed with an ammonium salt, ammonia gas is given off.

Which are properties of an acid?
1 reacts with ammonium sulfate to form ammonia
2 turns red litmus blue

Carbon dioxide is produced when
X reacts with ethanol.
Y reacts with sodium carbonate.

What are X and Y?

Ant stings hurt because of the methanoic acid produced by the ant.

Which substance could, most safely, be used to neutralise the acid?

Barium hydroxide is an alkali. It reacts with hydrochloric acid.

How does the pH of the hydrochloric acid change as an excess of aqueous barium hydroxide is added?

A gas is escaping from a pipe in a chemical plant.
A chemist tests this gas and finds that it is alkaline.

What is this gas?

The graph shows how the pH changes as an acid is added to an alkali.
acid + alkali → salt + water

Which letter represents the area of the graph where both acid and salt are present?