Hydrocarbons contain carbon and:

A liquid compound that conducts electricity is:

The Periodic Table is arranged in order of:

The only one of the following which is NOT a change of state is:

Oxidation can include all of these EXCEPT for:

In an atom the neutron is found:

All of these elements form allotropes EXCEPT for:

To make fertilisers and explosives we need:

All of these reactions are exothermic EXCEPT for:

The number of atoms in this formula, H₂SO₄, is:

The type of polymerisation used to make polythene is called:

To make car bodies we use:

All of these are trace elements EXCEPT for:

If the relative atomic mass (RAM) = 1 for hydrogen and 16 for oxygen, the formula mass for H₂O₂ is:

In electrolysis the anode is the:

All of the following are non-metals EXCEPT for:

In electrolysing a solution of copper sulphate using copper electrodes, the anode:

The common name for silicon dioxide is:

We can separate an insoluble solid from a liquid using:

In making bread the enzymes in yeast break down starch to give:

The gas that relights a glowing splint is:

None of these solutions in water conducts electricity EXCEPT for:

All of these are used as food additives EXCEPT for:

The empirical formula, C₆H₁₂O₆, gives the simplest ratio as:

We use expanded polystyrene cups for heat of reaction experiments because the cups are:

The non-metal used to make margarine is:

The two common varieties of chlorine atoms are called:

The number of particles in a mole of any gas is always:

The state symbol for a solution in water is:

To electrolyse solid lead bromide it must first be heated so that:

The number of atoms in a diatomic molecule is:

Any solution with a pH below 7 must be:

When dilute sulphuric acid is electrolysed the two gases produced are hydrogen and:

The catalyst in the Haber Process is:

To remove limescale from a tap you need:

To complete the reaction: acid + carbonate → salt + carbon dioxide + ?, we must add the word:

The major plant nutrients written as NPK refer to phosphorus, nitrogen and:

The Earth′s first atmosphere contained all of these gases EXCEPT for:

In an endothermic reaction:

The number of litres in 2000 cm³ is: