Metal Oxides

solid soluble in water

something insoluble in water

the liquid part of a solution

the solid part of the solution

increasing the temperature

removing the catalyst

chopping up the solid in to smaller pieces

decreasing the concentration

lowering the pressure

Mg + O $\Longrightarrow$ MgO

Mg + O2 $\Longrightarrow$ MgO2

2Mg + 2O $\Longrightarrow$ 2MgO

2Mg +O2 $\Longrightarrow$ 2MgO

iron is the only metal which rusts

rusting is a chemical reaction

rusting is a form of oxidation, like combustion

all chemical reaction are reversible

all metals will oxidise

heat was added

it had reacted with the air

it had reacted with the oxygen

gold

silver

sodium

potassium

magnesium