a) S.I. base units

a) Système Internationale (S.I.) base quantities and their units – mass (kg), length (m), time (s), current (A), temperature (K), amount of substance (mol)

S.I base units

• Mass = kilogram (kg)

• Length = metres (m)

• Time = seconds (s)

• Current = amperes (A)

• Temperature = kelvin (K)

• Amount of substance = moles (mol)