Free Printable Water

Worksheets

Water

Total questions: 22

Worksheet time: 12mins

Name

Class

Date

Water is a universal solvent

True

False

A Compound that is being dissolved is called a

Solution

Solute

Solvent

Suspension

A solvent is...

substance into which the solute dissolves

a compound being dissolved

a substance that does not dissolve

None of the above

What is an example of something that dissolves in water

Yourself

Sugar

A rock

A boat

Water is a universal solvent because it...

It can be found anywhere

It freezes when it gets cold

floats when frozen

Dissolves most substances

Which type of water makes soaps not work?

Hard

Soft

Metals that react quickly/strongly with water and acids are called?

Reactive

Unreactive

Dangerous

Corrosive

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

Colour change

Bright light

Fizzing

It gets colder

What metal hydroxide is produced when magnesium reacts with steam?

Copper hydroxide

Magnesium oxide

Magnesium

Magnesium hydroxide

10.

What gas is always produced when a metal reacts with water?

Oxygen

Carbon dioxide

Hydrogen

Carbon monoxide

11.

Which metal is most likely to react with water or acid?

Copper

Potassium

Magnesium

Iron

12.

If potassium reacts with water what are the 2 products of the reaction?

potassium hydroxide + oxygen

potassium hydroxide + hydrogen

potassium + hydrogen oxide

Potassium hydroxide + hydrogen oxide

13.

Hardness in water is caused by the presence of:

Sodium chloride

Sodium carbonate

Calcium chloride

Potassium nitrate

14.

Permanent hardness in water is caused by the presence of:

Calcium bicarbonate

Magnesium sulphate

Both of them

None of them

15.

Soft water is water that;

Does not lather

Lathers with difficulty

Lathers easily

Does not form bubbles

16.

Boiling can be used to make which type (s) of water soft.

Temporary and permanent hard water

Soft water

Permanently hard water

Temporary hard water

17.

What is electrolysis?

breaking down of a compound using a current

making a compound using a current

18.

Which statement correctly describes the 2 electrodes?

The anode is negative and the cathode is positive

The anode and cathode are both positive

The anode is positive and the cathode is negative

The anode and cathode are both negative.

19.

What is the name given to the solution that is being electrolysed?

Salt solution

Electric solution

Mineral solution

Electrolyte

20.

During electrolysis of water , hydrogen is collected at

anode

cathode

positive electrode

21.

_______________________electrodes are used during electrolysis of water.

Graphite

platinum

Mercury

22.

Impure Hydrogen burns with

pop sound

blue flame

pop sound as it contains impurities.

Reset

Water

Total questions: 22

Worksheet time: 12mins

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