Physical Chemistry of Foods

Quantity Name Symbol

Temperature kelvin K
Amount of substance mole mol
Luminous intensity candela cd

Supplementary Units

These concern the units for a plane angle, the radian, symbol rad; and the
solid angle, the steradian, symbol sr.

Derived Units

Derived units can be made as desired, but some have been given names and
symbols, and only these will be given here (in sofar as relevant).

Quantity Name Symbol SI base units

Amount of electricity coulomb C A?s

Electric capacity farad F A^2 ?s^4 ?kg
^1 ?m
^2 (C/V)

Electric potential volt V kg?m^2 ?s
^3 ?A
^1 (W/A)

Electric resistance ohm O kg?m^2 ?A
^2 ?s
^3 (V/A)

Energy (work, amount

of heat)

joule J kg?m^2 ?s
^2 ðN?m;C?VÞ

Force newton N kg?m?s
^2

Frequency hertz Hz s
^1

Molar mass dalton Da kg?kmol
^1 (g/mol)

Power watt W kg?m^2 ?s
^3 (J/s)

Pressure, stress pascal Pa kg?m
^1 ?s
^2 (N/m
^2 )

Numerical Prefixes

The most important numerical prefixes are

Multiplication factor Name Symbol

109 giga G
106 mega M
103 kilo k
10
^1 decia d
10
^2 centia c
10
^3 milli m