The amount of energy required to raise the temperature of one gram of a substance by one degree Celsius
Specific Heat
The starting substance(s), written on the left side of the chemical reaction arrow, which will be destroyed during a chemical change
Reactants
Energy transferred between two objects of different temperatures, moving continually in a predictable pattern from warmer site to cooler site until all sites have reached the same temperature
Heat
The ending substance(s), written on the right side of the chemical reaction arrow, that are created during a chemical change
Products
The sum of the potential energy and kinetic energy of an object; changes when work is done on the object
Mechanical Energy
The ability of a system to do work or produce heat
Energy
a unit of energy that measures the amount of energy in food
calorie
A measure of the strength of chemical bonds; equal to the heat required to break one mole of molecules into their individual atoms.
Bond Energy
A group of interacting, interrelated, or interdependent elements forming a complex whole
System
Requiring or involving a net output of heat
Exothermic
A measure of the average amount of kinetic energy of the molecules of a substance
Temperature
A group of two or more atoms bonded together by chemical forces, representing the smallest possible unit of a chemical compound that can participate in a reaction
Molecule
Requiring or involving a net input of heat
Endothermic
The smallest unit of an element that has all of the properties of that element; contains a nucleus within a surrounding electron cloud
atom
The minimum amount of energy that must be added to a mixture of reactants for a chemical reaction to occur
Activation Energy
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