From Ch 14
the capacity to supply heat or do work.
Energy
is the increase in rate of a chemical reaction due to an added substance
Catalyst
a unit of thermal energy equal to 4.184 joules or the amount of energy required to raise the temperature of 1 gram of liquid water 1°C at standard pressure.
Calorie
is catalysis where the phase of catalysts differs from that of the reactants or products.
Heterogeneous Catalyst
is a molecular species arising within the sequence of a stepwise chemical reaction.
Intermediate
the systems and surroundings.
Universe
is a substance that delays, slows or prevents a chemical reaction.
Inhibitor
The SI derived unit used to measure energy or work.
Joule
is catalysis where the catalyst is in the same phase as reactants, principally by a soluble catalyst in solution.
homogeneous catalyst
The change in enthalpy of a system when one mole of a substance is completely burnt in oxygen or air at a given temperature.
Enthalpy (heat) of combustion
is the amount of energy that is transferred from one system to its surroundings because of a temperature difference
Heat
provide a mathematical description of how changes in the amount of a substance affect the rate of a chemical reaction
Rate Law
quantity of heat required to raise the temperature of one gram of a substance by one Celsius degree.
Specific Heat
a reaction whose mechanism consists of more than one elementary step.
Complex Reaction
the rate of a reaction at any specific point in time, a period of time that is so short that the concentrations of reactants and products change by a negligible amount.
Instantaneous Rate
the measurement of energy in a thermodynamic system.
Enthapy
is a commonly used technique for deriving rate laws.
Method of Initial Rates
is nothing more than a collection of objects (or smaller systems) that can be identified.
System
the proportionality constant relating the rate of the reaction to the concentrations of reactants.
Specific Rate Constant
Step by Step processes by which chemical substances are transformed into other substances.
Reaction Mechanism
the branch of chemistry concerned with the quantities of heat evolved or absorbed during chemical reactions.
Thermochemistry
the relationship between the rate of a chemical reaction and the concentration of the species taking part in it.
Reaction Order
the change in the enthalpy of a chemical reaction that occurs at a constant pressure.
Enthapy (heat) of Reaction
is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time.
Reaction Rate
the amount of energy needed to change one mole of a substance from the liquid phase to the gas phase at constant temperature and pressure.
Molar Enthalpy (heat) of Vaporization