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relative atomic mass

the adding of the relative atomic masses of the atoms making up the molecule

atomic number

the number of protons in the atom

mass number

the number of protons plus the number of neutrons

isotope

atoms of the same element but with different numbers of neutrons

first ionization energy

the energy required to remove one mole of electrons from one mole of gaseous atoms

electronegativity

the ability of an atom to attract electrons in a covalent bond

exothermic reaction

a transfer of heat energy from the system to the surroundings, delta h is negative

endothermic reaction

an energy transfer from the surroundings to the system, delta h is positive

average bond enthalpy

the average of bond enthalpies that exist in different conditions

rate of reaction

a measure of the amount of reactants being converted into products per unit amount of time

activation energy

the minimum value of kinetic energy which particles must have before they are able to react

bronsted lowry acid

a proton donor

bronsted lowry base

proton acceptor

lewis acid

electron pair acceptor

lewis base

electron pair donor

oxidation

loss of electrons

reduction

gain of electrons

oxidizing agent

the reactant that accepts electrons; brings about the oxidation of the other reactant and it itself becomes reduced

reducing agent

reactant that supplies the electrons; brings about reduction and it itself becomes oxidized

iodine number

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