Videos
AP Chemistry
Pick a topic to watch.
9 video lessons
9:19
Topic 1
Atomic Structure and Properties
A chemical equation counts particles. Two of this react with one of that. But atoms are far too small to count, and there is no instrument that will hand you a…
8:45
Topic 2
Compound Structure and Properties
Three solids on a bench. Table salt. A diamond. A piece of copper. Hit the salt with a hammer and it shatters. The diamond scratches almost anything. The…
10:54
Topic 3
Properties of Substances and Mixtures
Boiling water. To make steam you must reach one hundred degrees Celsius. Methane has almost the same mass, and boils at minus one hundred and sixty-two.…
7:42
Topic 4
Chemical Reactions
A strip of magnesium metal. Touch it with a flame and it burns — combustion — with a light too bright to look at. What is left is not magnesium any more. It is…
8:00
Topic 5
Kinetics
Look inside a car's exhaust pipe. This ceramic honeycomb is a catalytic converter. The gases rushing through it are poisonous. Left alone they would take years…
8:53
Topic 6
Thermochemistry
Squeeze this pack and in seconds it turns icy cold. Nothing is burning; nothing is cooling it from outside. A solid is simply dissolving in the water inside…
8:24
Topic 7
Equilibrium
A chemical plant at dusk. Inside it, nitrogen from the air is turned into ammonia — the fertiliser that feeds about half the people alive today. But the…
8:24
Topic 8
Acids and Bases
Two strips of paper — one red, one blue. Dip them in a liquid and the colour changes, and that colour tells you whether the liquid is an acid or a base.…
8:16
Topic 9
Thermodynamics and Electrochemistry
Two puzzles. Hold an ice cube: it melts in your hand, even though melting takes energy in. Now look at a diamond. Every diamond should slowly turn into…