195927
Description
Flashcards by mckenziedev, updated more than 1 year ago
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Created by mckenziedev
about 12 years ago
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| Question | Answer |
| Heat | A form of energy which can be transformed. It is the total kinetic and potential energies of the particles that make up the object |
| Temperature | A measure of the average kinetic energy of the particles that make up a substance |
| Joule | The unit for energy |
| Celsius | A temperature scale based around the melting and boiling points of water |
| Kelvin | A temperature scale that starts from absolute zero |
| Hotter | A term used to describe an object with greater temperature/average kinetic energy of its particles |
| Colder | A term used to describe an object with lower temperature/average kinetic energy of its particles |
| Change Of State | Adding or removing heat changes the kinetic energy of the particles and can cause the object to move form one state to another |
| Thermal Conductor | An object that allows heat to flow through it |
| Thermal Insulator | An object that restricts the flow of heat through it |
| Conduction | The heat transfer process which occurs because objects are touching |
| Convection | The heat transfer process that occurs because objects are fluid/can move |
| Radiation | The heat transfer that occurs without the need for particles/can travel through a vacuum |
| Vacuum | A region with no particles |
| Density | The mass per unit volume of a substance |
| Convection Current | The flow of particles due to the heating and cooling of the object |
| Solid | Particles packed tightly together in a fixed position. They are gently vibrating, but are held together by strong forces |
| Liquid | Particles are moving and can slide past each other. They are held together by weaker forces and not in a fixed pattern |
| Gas | Particles are spaced far apart and move about very quickly. The forces trying to hold them together cannot overcome their rapid movement |
| Melting | Particles gain kinetic energy and spread out/vibrate more to go from a solid to a liquid |
| Evaporating | Particles in a liquid gain more kinetic energy and therefore take up more room and turn into a gas |
| Sublimation | A solid turns to a gas state without change to a liquid |
| Freezing | A liquid turns to a solid because of a sudden loss of kinetic energy to the particles |
| Condensation | A gas turns to a liquid state |
| Deposition | A gas turns to a solid state without changing to a liquid |
| Specific Heat Capacity | The amount of energy needed to change the temperature of 1kg of the substance by 1 degree c |
| Latent Heat of Vaporisation | Used for changes between liquid and gas (evaporating/condensing) |
| Latent Heat of Fusion | The amount of energy used for changes between solid and liquid (melting/freezing) |
| Latent Heat | How much heat energy is absorbed or released when a substance changes state without changing temperature |
| Power | A measure of the rate of heat energy absorbed or released when a substance changes temperature |
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