KS3 Y9 Metals and Water

Fill in all the gaps, then press "Check" to check your answers. If available use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button if available to get a clue. Note that you will lose points if you ask for hints or clues!

alkali all Calcium dium heat hot hot steam hydro hydrogen lilac not Potas potassium potassium hydroxide Reactive sodium atoms sodium hydroxide squeaky pop violent water yellow flame

In general, metals react with water to give gen and an .
Not metals will react readily with water.
Some metals will react with water.

So we are looking at three different groups of metals.

metals like So and sium will react ly with water.
will react vigorously with water.
Magnesium will react with water though still slowly. But when is passed over heated magnesium the reaction will take place readily.
Lead, silver, copper and gold will react with water.

Sodium will react with cold water to produce and an alkali solution called .

We can test for the hydrogen by collecting the gas produced in the reaction in a test tube then light it up. The hydrogen will burn with a . This is the proof of hydrogen gas. Because there are when the hydrogen burns a is produced.

The word equation for the reaction is as below.

sodium + water --> gen +

In the case of potassium, potassium will react with cold water to produce and an alkali solution called . There is so much energy produced that the hydrogen will be lighted up and burnt. A coloured flame is produced because there are atoms around.

So the general rule for reaction between metal and water is :-

metal + --> hydrogen +

provided that they do react.

KS3 Y9 Metals and Water

Gap-fill exercise.Name:_________________________Class:___________________Date:__________________

Gap-fill exercise.

Name:_______________Class:_Date:__________