Solids, liquids and gases. In a solid like this brick, the particles are regularly arranged touching their neighbours and move only by vibrating. This explains why solids have a fixed shape.

Everything that has mass is matter. In normal everyday life we come across matter in three states, solid, liquid and gas. They have a fixed shape and cannot flow The particles cannot move from ...

Students are introduced to the idea that matter is composed of atoms and molecules that are attracted to each other and in constant motion. Students explore the attractions and motion of atoms and ...

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MR. BRAME'S treatise is one of a long succession of books dealing with the general subject of fuels, but in view of the wonderful rapidity with which processes relating to fuel manufacture and its ...

Water is the only substance on Earth that occurs naturally as a solid, liquid, and gas. It does so because the temperature and pressure on our planet are just right to allow ice, liquid water ...