G8 Science Review Quiz

The table shows properties of four substances, A, B, C and D.

Which substance is a gas at 600 °C?

• A

• B

• C

• D

The table shows properties of four substances, A, B, C and D.

Which substance could be a metal?

• A

• B

• C

• D

Which method can be used to separate an insoluble solid from a liquid?

• crystallisation

• evaporation

• filtration

• simple distillation

Give the name of a method used to separate a mixture of liquids with different boiling points.

A student adds a crystal of substance X to some water in a beaker and leaves the beaker for one day. The diagram shows the beaker immediately after adding the crystal, and after one day.

Which equation gives the correct state symbols for a process that occurs in the beaker?

• X(s) → X(l)

• X(s) → X(g)

• X(aq) → X(s)

• X(s) → X(aq)

A student adds a crystal of substance X to some water in a beaker and leaves the beaker for one day. The diagram shows the beaker immediately after adding the crystal, and after one day.

Which other process occurs in the beaker?

• boiling

• condensing

• diffusion

• sublimation

Which of these is the formula of a molecule of an element?

• O

• Cl₂

• HCl

• H₂O

A representation of an atom is shown.

What is the mass number (nucleon number) of this atom?

• 6

• 7

• 12

• 13

Four physical changes of ethanol are listed.

1 condensation

2 evaporation

3 freezing

4 boiling

In which changes do the particles move further apart?

• 1 and 2

• 1 and 3

• 2 and 4

• 3 and 4

An atom of element X contains: ● 5 protons ● 6 neutrons ● 5 electrons.

Which statements about element X are correct?

1 X has an atomic number of 6.

2 X has a nucleon number of 11.

3 X is in Group II of the Periodic Table.

4 X is in the second period of the Periodic Table.

• 1 and 3

• 1 and 4

• 2 and 3

• 2 and 4