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Science:3-14-19

Phase change & Thermal Energy

TermDefinition
Melting Is the temp at which a solid becomes a liquid
Freezing The reverse of the melting process.
Vaporization Is the amount of energy required for the liquid at its boiling point to become gas.
Evaporation A liquid sitting in one place and its molecules become a gas
Sublimation Is the process of a solid changing directly to a gas without forming into a liquid.
Deposition It happens when gas becomes solid without going through the liquid state of matter.
Condensation Water which collects as droplets on a cold surface when humid air is in contact with it.
Heat of Fusion Is the energy required to change a substance from solid to liquid at its the melting point.
Heat of Vaporization Amount of energy required for the liquid at its boiling point to become a gas.
Gas Volume No fixed volume
Gas Shape No fixed shape
Gas Energy The greatest amount of energy
Liquid Volume Definite volume
Liquid Shape Takes the shape of the container
Liquid Energy Less energy than the gas state
Solid Volume Definite volume
Solid Shape Definite shape
Solid Energy Least the amount of energy
Thermal Energy The total energy of the particles as well as there potential energy.
Thermal Expansion Proneness of matter to change its shape, area, and volume in response to a change in temperature.
Kinetic Theory It is an explanation of how the gases behave.
Heat Energy that is transferred between objects due to a temperature difference between those objects.
Specific Heat The amount of heat needed to raise 1 kg of a material 1°C
Conduction Heat transfer through direct contact.
Convection Transfer of heat caused by the movement of hot and cold fluids (gas or liquid) due to a change in density.
Radiation Heat transfer through electromagnetic waves.
Variables & Units for calculating the change in thermal energy: Change in thermal energy Joules (J)
Variables & Units for calculating the change in thermal energy: Specific Heat Kilograms (Kg)
Variables & Units for calculating the change in thermal energy: Change in Temp. Celsius (°C)
Variables & Units for calculating the change in thermal energy: Mass (J÷kg×°C)
Created by: jadenIZaunicorn