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Science:3-14-19
Phase change & Thermal Energy
| Term | Definition |
|---|---|
| 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
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