An Introduction To Quantitative Chemistry (GCSE Chemistry)

This video aimed at GCSE students, explains the meaning of the terms relative atomic mass (Ar) and relative molecular (formula) mass (Mr). It also explains how to calculate the relative atomic mass of elements with more than one isotope and the relative molecular mass of molecules from given Ar values. Finally the video discusses how to calculate the percentage mass of an element in a compound using Ar and Mr values.