pH scale definitions

A substance that produces H⁺ (hydrogen ions) in water.

• Neutral substance

• An alkali

• An acid

• Salts

A substance that produces hydroxide ions in water.

• neutral substances

• salts

• An acid

• An alkali

The formation of solid crystals from a solution of its’ salt.

• neutralisation

• crystallisation

• freezing

• distillation

A chemical reaction in which a MORE reactive element displaces a LESS reactive element from its compound.

• neutralisation

• displacement

• distillation

• evaporation

The ion that every acid donates

• Hydrogen ions

• Hydroxide ions

• Hydrogen atoms

• Hydrogen molecules

The ion that every alkali donates.

• Hydrogen ions

• Hydroxide ions

• Hydroxide atoms

• water

A chemical dye that can be added to a substance that changes colour depending on whether the substance is acidic, neutral or alkaline.

• A poison

• An alkali

• An acid

• An indicator

A substance that has a pH of exactly 7.

• acid

• neutral

• alkaline

• toxic

The reaction between an;

acid and an alkali acid and base acid and carbonate

• endothermic

• displacement

• neutralisation

• crystallisation

A measure of the acidity of a substance. It identifies if a substance is acidic, neutral or alkaline.

• Ph scale

• table of ions

• periodic table

• pH scale