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8th Unit 4

Heat & Temperature & Energy Transformations Key Terms

TermDefinition
Chemical Change A change that involves the rearrangement of atoms to form a new substance
Combustibility Capable of igniting and burning in the presence of oxygen
Conduction When molecules exchange energy directly by contact
Convection The movement of energy in cells that move in a fluid motion within liquids, gasses and plasma
Radiation The transport of energy through space without contact between molecules
Law of Conservation of energy Energy is not created or destroyed but only changes form
Energy The ability to do work
Heat flow Energy travels in the form of heat from a relatively warm location to a relatively cool location. i.e. Cold is the absence of heat
Potential energy Stored energy that can be used to do work
Kinetic energy Energy of movement that is doing work
Precipitate A product of a chemical reaction that in not soluble in a solution
Reactivity The natural tendency of an atom, compound or molecule to interact with another atom, compound or molecule to form a new chemical substance
Specific Heat The amount of heat needed to raise the temperature of one gram of a substance by one degree Celsius
Created by: darrin_evans