Chemistry Definition Of Terms
- energy: measure of the ability to do work
- heat: measure of the total energy in a given amount of substance
- temperature: a measure of the average kinetic energy
- combustion: it is a chemical reaction that happens between a fuel and an oxidizing agent that produces energy. the energy is usually in the form of heat or light.
- neutralization: it is a chemical reaction in which an acid and a base react to form a salt.
- Exothermic Reaction: A reaction that releases heat to the surroundings as a result of forming products with stronger bonds than the reactants.
- Endothermic Reaction: A reaction that absorbs heat from the surroundings as a results of forming products with weaker bonds than the reactants.
- Enthalpy: The heat transferred during a reaction carried out under standard conditions
9. energy/ enthalpy level diagram: It is a diagram that illustrates the overall exothermic and endothermic reaction. These diagrams show difference in total enthalpy of both the reactants and products for a specific reaction.
- specific heat capacity: defined as the heat required to raise unit mass of substance by one degree of temperature.
- calorimeter: it is a device for measuring enthalpy changes for reactions.
- Standard Enthalpy Change Of Reaction: The heat transferred during a reaction carried out under standard conditions
- Standard Enthalpy Change Of Formation: The enthalpy change on the formation of one mole of a compound from its elements in their standard states under standard conditions.
- Standard Enthalpy Change Of Combustion: The enthalpy change on the complete combustion of one mole of the compound in its standard state in excess oxygen under standard conditions.
- standard enthalpy of vaporization: is the energy that must be supplied as heat at constant pressure per mole of molecules vaporized.
- Bond enthalpy: The average enthalpy change of breaking a bond between gaseous atoms into its constituent gaseous atoms.