Isotopes of hydrogen Whiteboard exercise Play

Isotopes of hydrogen, carbon and uranium Animation Play

Isotopes of oxygen Whiteboard exercise Play

Lactic acid Animation Play

Lactic acid Slideshow Play

Law of mass action Animation Play

Lewis dot-and-cross diagram for a hydrogen molecule Animation Play

Lewis dot-and-cross diagram of a hydrogen iodide molecule Animation Play

Lewis dot-and-cross diagrams Student activity Play

Lewis dot-and-cross diagrams Whiteboard exercise Play

Lewis structure of a hydrogen molecule Animation Play

Lewis structures (dot diagrams) for atoms Animation Play

Ligand types Student activity Play

Light phase and dark phase of photosynthesis Animation Play

Light phase and dark phase of photosynthesis Student activity Play

Light phase and dark phase of photosynthesis Whiteboard exercise Play

Limitations of Bohr's atomic model Animation Play

Lipids – the energy source of the cell Student activity Play

Liquefying of oxygen and nitrogen Illustration Play

Low oxygen levels Student activity Play

Magnesium oxide Animation Play

Magnesium oxide Student activity Play

Main process Animation Play

Making steel Whiteboard exercise Play

Making steel Student activity Play