Prueba Simple Test - Cloud 9 Academy

Which statements are properties of an acid?

1. Reacts with ammonium sulfate to form ammonia.
2. Turns red litmus blue.

Only 1 is correct.

1 and 2 are correct.

None of them is correct.

Only 2 is correct.

Which property is not characteristic of a base?

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It reacts with an acid to form a salt.

It reacts with an ammonium salt to form ammonia.

It turns universal indicator blue.

It reacts with a carbonate to form carbon dioxide.

What happens to the pieces of litmus paper?

Only blue litmus paper changes colour.

Only red litmus paper changes colour.

Both litmus papers change colour.

None of them change colour.

The diagram shows two substances, X and Y, being heated together.

The Universal Indicator paper turns blue during the experiment.
What are substances X and Y?

Ammonium nitrate and sodium hydroxide.

Sodium carbonate and hydrochloric acid.

Sodium carbonate and sodium hydroxide.

Ammonium nitrate and hydrochloric acid.