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:
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