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Total cards: 10•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (10)

#1
Front (Question)

amount of substance

Back (Answer)

mol

#2
Front (Question)

concentration

Back (Answer)

mol dm–3 or g dm–3 OCR specifications do not support the use of M (molar)

#3
Front (Question)

energy

Back (Answer)

J joules

#4
Front (Question)

enthalpy

Back (Answer)

kJ mol–1

#5
Front (Question)

mass

Back (Answer)

g

#6
Front (Question)

rate of reaction

Back (Answer)

mol dm–3 s–1 These units are the standard in the context of reactions occurring in solution, where the rate is measured in terms of the rate at which the concentration of one of the reactants falls

#7
Front (Question)

temperature

Back (Answer)

°C or K Standard thermometers measure temperature in °C. In certain practical contexts conversion to K is not required; for example in enthalpy determinations, the measured temperature difference is equivalent to the difference in K.

#8
Front (Question)

time

Back (Answer)

s

#9
Front (Question)

potential difference

Back (Answer)

V

#10
Front (Question)

volume

Back (Answer)

cm3 or dm3 Measurements using laboratory apparatus will commonly be in cm3 , while concentrations are expressed in terms of dm3 . ml and l are not official SI units and their use is not supported in OCR specifications