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Mr.Montesanto
Unit 3: Energy
Term | Definition |
---|---|
Energy | capacity to do work |
Kinetic Energy | energy of motion |
Potential Energy | stored energy |
Chemical Energy | energy associated with chemical change (reactions) |
Mechanical Energy | energy used to exert a force to produce motion |
Electrical Energy | associated with electric current (flow of electrons) |
Heat Energy | total kinetic energy of all particles of a sample. Total kinetic energy of all particles of a substance. |
Electromagnetic energy/radiaition | energy of electromagnetic waves |
Combustion | when something is burning |
Exothermic reaction | reaction that releases energy (Hot) |
Endothermic reaction | reaction that absorbs energy (Cold) |
Activation Energy | starting energy required for a reaction to take place |
Law of Conversation of Energy | Energy cannot be created or destroyed, only converted to different types of energy. Total energy always stays the same. |
Temperature | average kinetic energy of particles in a substance |
Absolute zero | lowest possible temperature |
Calorimetry | study of heat energy |
Kinetic Theory of Heat and Temperature | Particles are in constant motion. For all kinds of matter at the same temperature, the average kinetic energy is the same |
Solid phase | Has a definite volume and shape |
Liquid phase | definite volume and takes shape of container |