Science Week 2012 Thursday

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1 point

Which of these methods would be best for separating out ink from a coloured marker?

Distillation

Electrolysis

Chromatography

Filteration

1 point

The change of state from a gas to a liquid is called

Boiling

Freezing

Condensing

Melting

1 point

What is the unit for force?

Newtons

grams

weight

grams/s

1 point

Which of the following is a physical change?

frying and egg

grilling a steak

melting chocolate in a pan

burning a candle

1 point

Carbon dioxide gas is given off when?

A carbonate reacts with an acid

water reacts with an acid

a metal reacts with an acid

a salt reacts with an acid

1 point

Which of these is a solid at room temperature?

Helium

Hydrogen

Copper

Mercury

1 point

Which of the following does not dissolve in water?

Copper Sulphate

Sodium Chloride

Sugar

Iron Filings

1 point

Why does Saturn have a longer year than Earth?

Saturn spins slower than Earth

Saturn is bigger than Earth

Saturn is closer to the Sun than the Earth

Saturn is further away from the Sun than Earth

1 point

Substance Q has a boiling point of 175 degrees C, and a melting point of 40 degrees C, What is it's state at STP?

liquid

gas

solid

10.

1 point

A teaspoon of salt is dissolved in a beaker of water. What is the solvent in this example?

Water

Saltwater

Beaker

Salt

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