AQA Chemistry Paper 1 Exam
Acid
When dissolved in water, it releases H⁺ and the solution has a pH value < 7.
Alkali
When dissolved in water, it produces OH⁻ ions. Its solution has a pH > 7.
Base
The oxide, hydroxide, or carbonate of a metal that will react with an acid to form a
salt.
Electrolysis
The breakdown of a substance containing ions by electricity
Equilibrium
Point, during a reversible reaction, when the amount of reactants and products no
longer changes
, Neutral
A solution with a pH value of 7 which is neither acidic nor alkaline.
Or, something that has no electrical charge
Hydrochloric acid + sodium hydroxide -->
sodium chloride + water
Ore
Rock which contains enough metal to make it economically worthwhile to extract.
Reactivity series
Can be used to predict what might be observed when metals react with e.g. acids or
carbon. A list of elements in order of their reactivity.
Salt
A compound formed from an acid reacting with a base e.g. magnesium sulfate
The higher the temperature, the more particles will have..
Acid
When dissolved in water, it releases H⁺ and the solution has a pH value < 7.
Alkali
When dissolved in water, it produces OH⁻ ions. Its solution has a pH > 7.
Base
The oxide, hydroxide, or carbonate of a metal that will react with an acid to form a
salt.
Electrolysis
The breakdown of a substance containing ions by electricity
Equilibrium
Point, during a reversible reaction, when the amount of reactants and products no
longer changes
, Neutral
A solution with a pH value of 7 which is neither acidic nor alkaline.
Or, something that has no electrical charge
Hydrochloric acid + sodium hydroxide -->
sodium chloride + water
Ore
Rock which contains enough metal to make it economically worthwhile to extract.
Reactivity series
Can be used to predict what might be observed when metals react with e.g. acids or
carbon. A list of elements in order of their reactivity.
Salt
A compound formed from an acid reacting with a base e.g. magnesium sulfate
The higher the temperature, the more particles will have..
