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English 20 Public

Vocabulary and phrases from grade 4 science

Study Slideshow

Is sugar soluble?

Yes, sugar is soluble

5

Is soil soluble or insoluble?

Soil is insoluble (in water)

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Why do puddles look like they disappeared?

Because the water evaporated

15

What is 'recycle'?

Use again

5

Is melting reversible or irreversible?

Melting is reversible

10

Name 3 different fuels.

Gas, oil and wood are fuels.

10

Name the fuel that the human body 'burns'

The human body burns food

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What is 'separate' the opposite of?

It's the opposite of 'mix' or 'combine'

5

What's another word for 'sieving'?

Sifting

10

What happens to salt in water?

Salt dissolves in water

10

What do we call the process of separating solids from liquids?

This is filtering

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What is a particle?

It's a very small piece

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Is it useful to sieve a solution?

No, this is pointless/not useful

10

Why do we sieve flour before we bake?

To separate lumps from the flour

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What is a sieve with big holes (that we can use to separate peas from water)?

This is a colander

15

What are filter beds used for?

They are used for cleaning water.

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