Acids and Alkalis

Flashcards covering key vocabulary related to acids, alkalis, and pH.

Indicator

A substance that contains a dye that changes color in acidic and alkaline solutions.

Litmus paper

A type of indicator that turns pink in acid and blue in alkali.

Salt

A compound formed when an acid reacts with a metal element or compound.

Base

A compound that reacts with an acid to form a neutral solution.

Alkalis

Bases that are soluble in water.

Neutralisation

The reaction between an acid and a base, producing water and a salt.

Acids and Alkalis

Solutions that are chemical opposites; one has a pH less than 7 (acid) and the other has a pH greater than 7 (alkaline).

Neutral

The state of a solution that is neither acidic nor alkaline, with a pH of 7.

Corrosive

The ability to cause burns or damage upon contact with skin or other materials.

Concentrated

A solution with a high concentration of acid or alkali particles relative to the amount of water.

Dilute

A solution with a small number of acid or alkali particles in the same amount of water.

pH Scale

A scale used to measure how acidic or alkaline a substance is.

Universal Indicator

An indicator that shows how acidic or alkaline a solution is by turning a different color at each pH level.