@From the following list choose TWO alkenes: Methane, petrol, hydrogen, propene, butane & ethene.
Ethene and propene
Petrol and butane
Methane and ethene

@Elements in the same group form compounds which have:
Very similar formulae
Totally different formuale
Only slightly similar formulae

@Increasing the pressure would increase which one of the following reactions reaction rates?
N + 3H  2NH
NHCl  NH + HCl
CaCO  CaO + CO

@Which one of the following changes is oxidation?
CuO  CuO
N  NH
FeCl  FeCl

@Before river water can be used in the home it is purified by:
filtration and chlorination
distillation and neutralisation
neutralisation and filtration

@A car, just ticking over, does not produce which one of the following?
Sulphur dioxide
Water vapour
Carbon dioxide

@What volume of liquid is in the measuring cylinder?
#cylin2
8 cm
6 cm
9 cm

@If a solid will dissolve in a liquid, the liquid is called a:
Solvent
Solute
Solution

@2Mg + ?CO  2MgO + C The number needed to balance the equation is:
1
2
3

@When zinc oxide reacts with nitric acid (HNO), which of the following is produced?
Zinc nitrate
Hydrogen
Carbon dioxide

@A Hoffmann voltameter is connected as shown. What is the name of the positive (+) electrode?
#hoff
an Anode
a Cathode
an Electrolyte

@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

@Which one of the following processes involves a chemical change?
Oxidation
Filtration
Condensation

@The mass number for an atom is the number of:
Protons & neutrons added together
Protons only
Neutrons only

@In a blast furnace, which one of the following is reduced?
Iron(III) oxide
Carbon monoxide
Limestone

@Aircraft frameworks are usually made of:
Aluminium
Zinc
Tungsten

@Which one of the following would be most suitable to prepare hydrogen gas from hydrochloric acid
Zinc
Calcium
Copper

@The temperature diamond melts at is:
3550
95
300

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

@To make hydrogen in the lab, what two substances are usually used?
Hydrochloric acid and zinc
Sulphuric acid and copper
Sodium hydroxide and magnesium

@Plants use the nitrogen from fertilizers to make:
Proteins
Carbohydrates
Starch

@Oxides of non metals are usually:
Acidic
Alkaline
Neutral

@Sulphur is said to exhibit allotropy. This means that it:
Exists in more than one solid form
Has atoms with different numbers of neutrons in the nucleus
Does not conduct electricity, even when molten

@What is the name of this substance?
#meth
Methane
Ethene
Butane

@In which period of the periodic table is the element with the relative atomic mass of 16?
Two
Six
Five

@Hydrogen peroxide decomposes with copper II oxide as a catalyst. At the end of the reaction:
The mass of the copper II oxide is the same
The hydrogen peroxide is unchanged
The copper II oxide has totally reacted to form a new product

@CuO + H  Cu + HO Which of the following statements is correct?
Copper oxide is an oxidising agent
Hydrogen is an oxidising agent
This is no a redox reaction

@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
