13 crazy experiments-explosions you shouldn't do at home.
Starting with the propane-C3H8 filled balloon explosions. Slow motion reveals that initially there is blue flame which takes quickly yellow color. Secondly, acetylene-C2H2 (prepared by adding calcium carbide to water) flame is black due to unburned carbon particles. Nitrocellulose-C6H7O2(ONO2)3 burning is fast, but small pieces can be safely ignited on palm due to low density of nitrated cotton.
Trimethylborate-B(OCH3)3 exploded with green flame.
Rubidium-Rb and potassium-K reacted explosively with water.
Then came methanol-CH3OH cannon.
Aluminium-Al and lead tetroxide-Pb3O4 or simply aluminothermic mixture was ignited with a chemical time fuse.
Bomb group was neutralizing solvents that may have had some unstable peroxides formed. They used plastic explosive (contains hexogen-C3H6N6O6, also known as RDX) and a detonating cord. The second explosion was picric acid-C6H3N3O7 and some plastic explosive.
The last was a mixture of potassium permanganate-KMnO4 and aluminium-Al.

These are some snapshots from "100+ experiments in chemistry" collection and explained videos are available at http://www.chemicum.com/chemistry-videos .

Explosiones en cámara lenta, explosões em câmera lenta, explosionen in zeitlupe, explosions au ralenti, взрывы в замедленной съемке, esplosioni, plahvatused aegluubis, paukgaas, keemia.