Chemical and Physical Reactions (16 gifs)

1

Sodium polyacrylate can absorb over 200 times its mass in water.

Fluorine reacting with hydrogen in a balloon

2

A neodymium magnet falling through a copper pipe

3

Magnetic field equilibrium.

A kernel of corn popping

4

Deflecting a stream of water with a charged rod

5

You can also do this (to a lesser extent) by rubbing a balloon on your hair, then holding it next to your running sink.

Mercury(II) thiocyanate decomposition

6

Heating mercury(II) thiocyanate causes it to release toxic gases and decompose into an insoluble brown mass.

Hydrogen peroxide mixed with potassium iodide

7

The iodide catalyzes the decomposition of the hydrogen peroxide. A small amount of dishwashing soap is usually added so that the resultant oxygen is caught in the bubbles, forming a tower of foam.

Copper reacting with nitric acid

8

Oxidation.

Electrical treeing

9

Electrical discharge.

Water crystalizing into snow

10

Firework explosion in slow motion

11

Belousov–Zhabotinsky reaction

12

A slowly propagating chemical oscillation containing bromine and an acid.

Lithium on fire

13

A candle lit by its vapor trail

14

Orange LED light immersed in liquid nitrogen

15

The wavelength & frequency of the light changes as it loses thermal energy.

Flammable fluid in a glass jug