Cambridge Checkpoint Science 9: Reactivity

Front

What is reactivity in chemistry?

Back

Reactivity refers to the tendency of a substance to undergo chemical reactions, either by itself or with other materials.

Front

Which metal is more reactive: magnesium or copper?

Back

Magnesium is more reactive than copper.

Front

What is the product of the reaction between iron and oxygen?

Back

Iron oxide.

Front

What does a balanced chemical equation represent?

Back

A balanced chemical equation represents the conservation of mass, showing that the number of atoms of each element is the same on both sides of the equation.

Front

What is the balanced equation for the reaction of sodium and water?

Back

2Na + 2H₂O → 2NaOH + H₂.

Front

How can you tell that a metal is reacting with water?

Back

You can tell by observing fizzing.

Front

What happens when zinc sulphate reacts with magnesium?

Back

Magnesium sulphate and zinc are produced.

Front

What is a metal salt?

Back

A metal salt is a compound formed from the reaction of an acid with a metal or a metal oxide.

Front

What is the significance of the reactivity series?

Back

The reactivity series ranks metals based on their reactivity, helping predict how they will react with other substances.

Front

What is an example of a non-reactive metal?

Back

Gold is an example of a non-reactive metal.