kinectin theory
...rticles of different substances have different sizes. Particle of elements such as aluminium iron and oxygen are very small. Particles of compound like sugar are larger. Particles of some complex compound s such as rubber proteins are thousand times bigger. • The particles in all substances are continually moving. Small particles move faster that heavier particles at the same temperature. • As temperature rises, the particles get hotter. They have more energy and move around and faster. • In a solid the particles are very close with strong forces between them. Solid particles can only vibrate about fixed positions. This explains why solids have a fixed shape and a fixed volume. • In a liquid the particles are a little further apart. The forces between the particle...