@Which one of the following is not an element?
Brass
Copper
Iron

@From the following list, which three substances are all compounds: Air, water, hydrogen, silver nitrate, tin & brass.
Water, brass and silver nitrate
Air, silver nitrate and hydrogen
Tin, brass and silver nitrate

@From the list below, how many substances are compounds? Water, hydrogen, silver nitrate, tin & brass.
Three
Four
Two

@From the list below, how many substances are mixtures? Air, water, hydrogen, silver nitrate, tin & brass.
One
Two
Three

@From the list below, how many substances are elements? Air, water, hydrogen, brass, silver nitrate & tin.
Two
One
Four

@A compound is:
Two (or more) elements joined together to make a new substance
A substance which is composed of just one atom
Two (or more) elements mixed together, that can be easily separated

@Hydrogen burns, but water (which contains hydrogen  and oxygen) does not. This is because:
Compounds do not have the same properties as the things they are made from
Oxygen stops burning from taking place
Hydrogen will only burn when there is no oxygen

@Iron and sulphur are
Both elements
Both compounds
Both mixtures

@If iron and sulphur are put into a beaker and stirred the product is:
a mixture
a compound
an element

@When iron and sulphur are heated together for sometime the product is:
a compound
a mixture
an element

@What is the chemical symbol for mercury?
Hg
M
Mo

@What is the chemical symbol for aluminium?
Al
A
Am

@What is the chemical symbol for iron?
Fe
I
Ir

@Name the elements in copper carbonate:
Oxygen, copper and carbon
Copper and carbon
Copper, carbon, nitrogen and oxygen

@Pb is the chemical symbol for
Lead
Platinum
Polonium

@Ir is the chemical symbol for
Iridium
Iodine
Indium

@Which statement about mixtures is correct?
Substances in the mixture can't be physically separated
The mixture has the same properties as the elements it is made of
It always has equal amounts of the elements that it was made from

@A substance made of one kind of atom is:
an element
a compound
a mixture

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

@Which of the following is a physical change only
Filtration
Oxidation
Reduction