@Zn + CuO  ZnO + Cu Which of the following statements is correct?
Copper atoms lose 2 electrons
Zinc is oxidised
Copper is reduced

@Salt can be used to preserve food because:
it has a drying effect
its helps useful bacteria grow
it causes a chemical reaction, producing heat

@Carbon monoxide is poisonous because it:
Combines with the oxygen carrying portions of blood
Is oxidised in the lungs
Produces carbon in the lungs

@If this measuring cylinder was full to the top of its scale it would contain:
#cylin2
15 cm
8 cm
20 cm

@In a police investigation two samples of ink needed to be tested to see if they were the same. The method used to show this would be:
Chromatography
Centrifuging
Distillation

@Zn + ?HCl  ZnCl + H What is the missing number needed to balance this equation?                                                                        
2
1
3

@The pH's of lime water, vinegar and ammonia solution in order are:
Twelve, five and eleven
Ten, two and eight
Six, five and eight

@The liquid in the container is copper II sulphate (CuSO). When carbon rods X and Y are connected to a battery, gas bubbles can be seen around one of them. This gas is:
#electro1
Oxygen
Hydrogen
Sulphur dioxide

@To break chemical bonds you?
Give heat energy
Remove heat energy
Do not add or remove heat energy

@An element that forms crystals composed of small molecules is:
Iodine
Diamond
Magnesium

@Pb is the chemical symbol for
Lead
Platinium
Polonium

@Which one of the following ions does not normally exist?
Na
Ca
Fe

@The different types of steel can contain mainly iron with different elements added. Which one of the following is NOT found in steel?
Potassium
Carbon
Chromium

@The metal used in kitchen foil and chocolate bar wrappers is:
Aluminium
Steel
Tin

@In which of the following pairs can both metals be obtained by passing carbon monoxide over the hot metal oxide?
Lead and copper
Aluminium and iron
Copper and magnesium

@Will carbon conduct electricity?
Yes
No
Only when molten

@Which of the following is a possible source for bromine?
Sea water
Bauxite
Haemetite

@Which one of the following is NOT a physical property of hydrogen?
It is acidic
It is almost insoluble in water
It is odourless

@Which one of the following is used as a fertilizer?
Ammonium sulphate
Copper II sulphate
Sodium sulphate

@Oxygen can be prepared in the lab by:
Adding manganese IV oxide to hydrogen peroxide
Heating copper II oxide
Heating lead II carbonate

@Which one of the following is sulphur not used for?
Making natural rubber 'softer' for tyres
Making insecticides
Making matches

@What is this substance called?
#ethene
Ethene
Ethane
Butane

@An element does not conduct electricity. Using this information only, the element is likely to belong in:
Group 7 (the halogens)
Group 1 (the alkali metals)
The transition elements

@Which will react faster with an acid - one 4g lump of marble, or four 1g lumps?
#area
Four 1g lumps
One 4g lump
They will both react at the same rate because they are both made of the same substance

@CuO + H  Cu + HO Which of the following statements is correct?
Copper oxide is an oxidising agent
Hydrogen is an oxidising agent
This is not a redox reaction

@What is the name of the liquid found between the plates of a car battery?
Sulphuric acid
Nitric acid
Sodium carbonate

@A gas which pollutes the atmosphere?
SO
CO
Ar

@If you were asked to measure 21.7 cm of liquid as accurately as posible, which one would you use?
50cm burette
100cm beaker
25cm pipette

@To separate the dyes ink is made from, it is easiest to use:
Chromotography
Filtration
Evaporation
