Science GL practice paper

A new substance can be formed when

• paper is squashed

• a nail rusts

• water changes to steam

• sugar is added to tea

What are the similarities between liquid and gas?

• both have little mass

• both are transparent

• they can be broken

• both take the shape of the container

How do you separate salt from water solution?

• freeze the solution

• filter the salt

• pour the water away

• evaporate the water

Which of these will form a solution?

• stone and water

• sand and water

• salt and water

• salt and sand

the job of the blood vessels is to...

• pump blood around the body

• blood vessels dissolve nutrients in the body

• carry blood to all part of the body

• help in blood clotting

In water cycle, water falling back to the earth from the clouds is called

• freezing

• condensation

• precipitation

• evaporation

Which change is from water vapour to liquid(gas-liquid)?

• Ice cubes melting

• moisture forming on a mirror

• a river drying up

• water boiling in a pot

Liquid water holds its shape

• True

• False

How many times does the moon orbit the Earth in a year?

• 13

• 28

• 365

• 7

Which symbol represents a buzzer?

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