Saturday, February 19, 2011

The differences in the four states of matter, and how the motion of particles in a material changes when material changes state



The four states;
Solid matters' particles are tightly held together, and in a difinate shape. Liquid particles are held together losely and can form different shapes. Gas particles are going seperate ways, and they arent connected. And plasma particles are either positive+, or negitive-, and they're just floating around.



How they change;
When a solid changes to a liquid its called melting, the particles move faster. Also, to change 1kg of a solid to a liquid 1degree is called heat of fusion.

And when a liquid changes to a solid its called freezing. To freeze something you have to remove the energy, when you decrease the liquids temperature, you decrease the average kinetic energy, so the particles move slower. Eventually the forces between the particles are strong enough to take a definate form.

When a liquid changes to a gas it's called vaporization, as the temperature of the liquid increases, the particles move faster. Eventually the forces between the particles become too weak, and can't hold together. Vaporization can happen at the surface of the liquid, or within the liquid.

Condensation is when a gas turns to a liquid.. The particles lose heat energy, but the forces between the particles get stronger and stay together losely.

When a gas turns into plasma, its called ionization. The particles move faster, and turn into positive and negitive particles and "float" in different directions not connected..

And when a plasma turns into a gas its called deionization.