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  gasliquidplasmafireenergysolid, which has particles spread far apart with no bonds between particles. The next least dense state of matter is  oilenergyliquidsolidwatergas, which has weak bonds between its particles, but these particles can still move past each other. The most dense state of matter is  metaldiamondgasliquidrocksolid, 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  gas to liquidliquid to gassolid to liquidliquid to solidsolid to gasgas to solid.
• Sublimation is the state transition from  gas to liquidliquid to gassolid to gasliquid to solidsolid to liquidgas to plasma.
• Evaporation is the state transition from  solid to gasgas to liquidliquid to gasgas to solidsolid to liquidliquid to solid.

These state changes are  chemical changesmolecular changesatomic changestemperature changesphysical changesnuclear changes, and they are reversible.

The internal energy of a system is the total  chemicalpotentialthermalkineticthermal and chemicalkinetic and potential energy in the system, which can be increased by heating. This either increases the temperature of the system (which depends on the  specific latent heatinsulationspecific heat capacityefficiencydensitythermal conductivity 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 capacitydensitythermal conductivityspecific latent heatefficiencyinsulation of the materials in the system). While an object changes state,  its temperature and internal energy increaseits temperature and internal energy decreaseits temperature and internal energy stay the sameits internal energy stays the same and its temperature increasesits temperature stays the same and its internal energy increasesits temperature decreases and its internal energy decreases.

Particles in a gas are in constant random motion. The temperature of a gas is related to  the specific heat capacitythe massthe specific latent heatthe sizethe average kinetic energythe charge 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 hit the sides of the container at higher speedsthe particles try to get away from each otherthe particles explodethe particles are more attracted to the containerthe particles begin to rotatethere are more particles.