States of Matter: Solids, Liquids and Gases

Everything around you is a solid, a liquid or a gas. In this Year 4 course you will compare their properties, group materials by state, find out what happens when things melt and freeze, and measure temperatures in degrees Celsius.

Tutwoo Kids is an independent learning service. This course is not affiliated with or endorsed by the Department for Education, Ofqual or any exam board, and Tutwoo Kids certificates are not qualifications. Content was checked against the national curriculum for England in October 2026.