A change in the state of matter Animation Play

A copper wire Animation Play

A diagram of the operation of a gas turbine engine Animation Play

A large amount of water in the organism Animation Play

A laser Student activity Play

A liquid exerts pressure in a different way from a solid Whiteboard exercise Play

A liquid exerts pressure in a different way from a solid Student activity Play

A liquid exerts pressure in all directions Student activity Play

A liquid exerts pressure in all directions Animation Play

A liquid exerts pressure in all directions Whiteboard exercise Play

A mercury barometer Animation Play

A microscopic view Animation Play

A mixture of nitrogen dioxide and dinitrogen tetroxide gases Whiteboard exercise Play

A pump Animation Play

A simple hydraulic machine Animation Play

A small amount of water in the organism Animation Play

A tokamak Slideshow Play

A tokamak Whiteboard exercise Play

A tokamak Student activity Play

Ability to react with carbonates Animation Play

Ability to react with metals Animation Play

Absolute values of entropy Student activity Play

Absolute zero Animation Play

Absorption and emission of gases Student activity Play

Absorption spectrum of gases Student activity Play