Particle model of matter GapFill

The particle model of matter describes the different states of matter in terms of the particles that make them up. The least dense state of matter is  plasmaliquidenergyfiregassolid, which has particles spread far apart with no bonds between particles. The next least dense state of matter is  liquidsolidgaswaterenergyoil, which has weak bonds between its particles, but these particles can still move past each other. The most dense state of matter is  diamondmetalliquidsolidgasrock, which has particles very close together with strong bonds between these particles.
Substances can change from one state of matter to another; for example:

• Melting is the state transition from  liquid to solidsolid to liquidsolid to gasgas to solidliquid to gasgas to liquid.
• Sublimation is the state transition from  solid to liquidsolid to gasliquid to solidgas to liquidliquid to gasgas to plasma.
• Evaporation is the state transition from  liquid to gasgas to solidsolid to gasgas to liquidsolid to liquidliquid to solid.

These state changes are  atomic changeschemical changesnuclear changesphysical changesmolecular changestemperature changes, and they are reversible.

The internal energy of a system is the total  kinetic and potentialkineticpotentialchemicalthermalthermal and chemical energy in the system, which can be increased by heating. This either increases the temperature of the system (which depends on the  specific heat capacityinsulationspecific latent heatdensitythermal conductivityefficiency and mass of the objects in the system) or changes the state of the system (how much of the system changes state depends on the  specific heat capacityspecific latent heatdensityinsulationthermal conductivityefficiency of the materials in the system). While an object changes state,  its temperature and internal energy decreaseits temperature decreases and its internal energy decreasesits temperature and internal energy increaseits temperature stays the same and its internal energy increasesits internal energy stays the same and its temperature increasesits temperature and internal energy stay the same.

Particles in a gas are in constant random motion. The temperature of a gas is related to  the average kinetic energythe chargethe sizethe specific latent heatthe specific heat capacitythe mass of the particles in the gas. When the temperature of a gas in a fixed container increases, the pressure of the gas increases because  the particles explodethe particles begin to rotatethere are more particlesthe particles try to get away from each otherthe particles are more attracted to the containerthe particles hit the sides of the container at higher speeds.