1°, 2° and 3° carbocations Animation Play

A mobile source and a mobile observer Whiteboard exercise Play

A mobile source and a mobile observer Student activity Play

Abundance of chemical elements in nature Student activity Play

Abundance of chemical elements in nature Whiteboard exercise Play

Abundance of elements in nature Slideshow Play

Abundance of noble gases in the atmosphere Slideshow Play

Abundance of the elements in the crust and in the whole Earth Animation Play

Abundance of the principal elements in the Universe Slideshow Play

Atomic and molecular mass Class activity Play

Atomic and molecular mass Whiteboard presentation Play

Atomic masses in the periodic table Student activity Play

Atomic number and mass number Student activity Play

Calculating cumulative frequency and cumulative relative frequency Animation Play

Calculating cumulative relative frequency Whiteboard exercise Play

Calculating of the relative molecular mass Animation Play

Calculating the isotopic composition of an element Student activity Play

Calculating the relative molecular mass of a compound Whiteboard exercise Play

Chlorine isotopes Whiteboard exercise Play

Classical concept of probability (1) Class activity Play

Classical concept of probability (1) Whiteboard presentation Play

Colour perception Slideshow Play

Colour perception Student activity Play

Cumulative frequency, cumulative relative frequency Student activity Play

Cumulative frequency, cumulative relative frequency Whiteboard exercise Play