Year 9 Science – Acids and Bases Review

These flashcards cover essential vocabulary and concepts related to acids and bases in Year 9 Science, focusing on their properties, reactions, and indicators.

Acids

Substances that taste sour and can react with metals and bases.

Bases

Substances that taste bitter, feel slippery, and can neutralize acids.

pH

A scale used to determine how acidic or basic a solution is.

Antacid tablets

Medicines designed to neutralize stomach acid.

Neutralisation

The reaction between an acid and a base to produce water and salt.

Acid rain

Rain that has been acidified by pollutants, often resulting from sulfur dioxide and nitrogen oxides.

Indicator

A substance that changes color to indicate whether a solution is acidic or basic.

Carbon dioxide

A gas produced when an acid reacts with a carbonate or metal.

Hydrogen gas

A gas that is released when acids react with certain metals.

Alkali

A base that is soluble in water.

Sulfuric acid

A strong acid used in car batteries and fertilizer production.

Ammonia solution

A basic solution used for cleaning and in fertilizers.

Universal indicator

A mixture of indicators that shows different colors at different pH levels.

Litmus paper

A type of indicator that turns red in acidic solutions and blue in basic solutions.

Cabbage indicator

An indicator that changes color over a range of pH levels, providing a more precise measurement than litmus.

Chemical reaction with acid and metal

Produces hydrogen gas and a salt.