Does gas weigh anything?

What does gas weigh? An experiment using fizzy lemonade to determine mass.

Gases in daily life (clip compilation)

A look at how different gases are used in everyday life.

Joseph Priestley – the discovery of gases

Joseph Priestley describes his work and discovery of carbon dioxide and oxygen.

Joseph Priestley – the discovery of gases (signed)

Joseph Priestley describes his work and his discovery of carbon dioxide and oxygen.

Separating solids and liquids

A look at a range of day-to-day examples of separating liquids and solids.

Solids and liquids (clip compilation)

A compilation of clips based on a theme of liquids and solids.

Solids, liquids and gases

A demonstration of a rapid change of state using liquid nitrogen.

Solids, liquids and gases (clip compilation)

A compilation of clips based on the theme of solids, liquids and gases.

Testing for oxygen

Gas produced underwater by pondweed is collected in a test tube and shown to be oxygen.

Turning glass from a liquid to a solid

How glass is heated to high temperatures, melted and cooled to form a solid material.