Explaining chemistry terms

This video is an interactive lesson in calculating an atom's mass and atomic number.

A video about the energy changes involved in chemical reactions, whether exothermic or endothermic.

This video is about what exothermic and endothermic reactions are.

This video explains the periodic table, which contains all the known elements.

This video explains covalent bonding.

This video explains fractional distillation - the separation of crude oil into fractions.

This video is about the mole, the unit of measurement for the number of particles in a substance.