Summary Grade 12 IEB Physical Sciences - All Definitions (Chemistry)

Mole The SI unit for amount of
substance




Molar mass The mass in grams on one mole of
that substance




Solution A homogenous mixture of solute
and solvent




Solute The substance that is dissolved in
the solution




Solvent The substance in which another
substance is dissolved, forming a
solution




Concentration The amount of solute per unit
volume of solution

, Yield A measure of the extent of a
reaction, generally measured by
comparing the amount produced
against the amount of product that
is possible



Intramolecular bond A bond which occurs between
atoms within molecules




Covalent bond A sharing of at least one pair of
electrons by two non-metals




Non-polar covalent bond An equal sharing of at least one
pair of electrons by two non-metals




Polar covalent bond An unequal sharing of at least one
pair of electrons by two non-
metals, leading to a dipole forming




Electronegativity A measure of the tendency of an
atom to attract a bonding pair of
electrons