School › States of matter
Solids, liquids and gases
Solids, liquids and gases, the particles inside them, melting, boiling and why ice floats. Three ages, each with a text, an experiment, a game, a quiz, a printable worksheet and a teacher sheet.
Ages 6–7Solid, liquid or gas?Everything is a solid, a liquid or a gas. Find out how they are different, and watch ice turn into water.Ages 10–11States of matter and the particle modelSolids, liquids and gases explained with particles, the names of the changes of state, the boiling and melting points of water, and why ice floats. With a melting fair test.Ages 15–16States of matter: kinetic theory and latent heatThe kinetic-molecular model, temperature and kinetic energy, phase transitions and latent heat, and the strange density of water. With a heating-curve experiment on melting ice.