Reactivity of the alkali metals and their position in the periodic table Animation Play

Reactivity of the alkaline-earth-metals and their electron configurations Animation Play

Reading from graphs Student activity Play

Reading the information included in the periodic table Whiteboard exercise Play

Reduction formulas due to periodicity Student activity Play

Reduction formulas due to periodicity Whiteboard exercise Play

Relationship between the group number and the number of valence electrons Animation Play

Relative atomic mass Class activity Play

s-block elements Animation Play

s-Block elements Whiteboard presentation Play

s-Block elements Class activity Play

Sampling frame Student activity Play

Selecting blood for transfusion Animation Play

Sexual; kin and group selection Animation Play

Simple sugars Animation Play

Sodium cation Animation Play

Spectra of compounds with a carbonyl group Whiteboard exercise Play

Spectra of compounds with a carbonyl group Student activity Play

Stable and radioactive isotopes Student activity Play

Standard reduction potentials Student activity Play

Standard reduction potentials Chart Play

Stratified sampling Student activity Play

Structural isomerism: positional isomers and functional group isomers Student activity Play

Structure of enzymes Animation Play

Structure of the carbonyl group Animation Play