1.8 - Kinetic Theory

• heating particles increases their kinetic theory
• the process of a solid turning into a gas is called sublimating
• the process of a gas turning into a solid is called deposition
• particles vibrate on the spot in a solid
• particles move around each other in a liquid
• particles move quickly infall directions in a gas
• To increase the pressure we must reduce the surface area
• When gases in fixed containers are heated, their pressure increases.
• Specific heat capacity is the amount of energy needed to increase the temperature of 1kg of a substance by 1 degree
• Specific latent heat is the amount of energy needed to change the state of 1kg of a substance without changing its temperature
• Molecules in a gas are in constant random motion
• What factor affects the average kinetic energy of has molecules?

  Temperature, higher the temperature the higher the average kinetic energy if the molecules
• What effect does increasing temperature have in the pressure of a gas when held at constant volume?

  gas pressure will increase as the temperature increases
• Why does pressure increase as temperature increases at a constant volume?

  kinetic energy of molecules increase, collisions between molecules are more frequent, greater rate of change of momentum, greater force + pressure
• State the difference between thermal capacity and specific heat capacity.

  • Heat capacity is a measure of the energy needed to change the temperature of an object by 1°C,.
  • The specific heat capacity is the energy needed to change the temperature of a kilogram of material by 1°C.
• The specific heat capacity of a substance is the amount of energy needed to increase the temperature of 1kg of the substance by 1°C
• Condensation is the opposite of boiling, it is a gas becoming a liquid.
• Solidification is the opposite of melting, it is a liquid becoming a solid.