Arrangement of the elements in the periodic table Whiteboard exercise Play

Atomic masses in the periodic table Student activity Play

Calculating the isotopic composition of an element Student activity Play

Calculating the relative molecular mass of a compound Whiteboard exercise Play

Calculation of the percentage composition of a given compound Animation Play

Chlorine isotopes Whiteboard exercise Play

Determination of average atomic mass of boron Animation Play

Determination of isotopic composition of silver Animation Play

Dinitrogen pentoxide Simulation Play

Glucose Simulation Play

Hydrogen fluoride Simulation Play

Mass percentage of hydrogen in methane Whiteboard exercise Play

Relative atomic mass Class activity Play

Relative atomic mass Student activity Play

Relative atomic mass Whiteboard presentation Play

Relative atomic mass of magnesium Whiteboard exercise Play

Relative molecular mass Animation Play

Relative molecular mass Student activity Play

The atomic masses of chemical elements in the periodic table Animation Play

The relative atomic mass Animation Play

The relative atomic mass and its units Whiteboard exercise Play

The relative atomic mass of a natural element Animation Play

The relative atomic mass of an element Whiteboard exercise Play

What decides whether an atomic mass is a whole number or not Animation Play

Why atomic masses are not usually whole numbers? Student activity Play

Why it is useful to know the atomic masses of elements? Student activity Play