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Summary Grade 12 IEB Physical Sciences - All Definitions (Chemistry)
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Includes all chemistry definitions as per the IEB Physical Sciences SAG. Applicable to all IEB Grade 12s.
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Mole The SI unit for amount ofsubstance
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
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