20 terms

IB Chemistry

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
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
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
loss of electrons
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