Ozone is a version of oxygen with three atoms per molecule, whereas normal, everyday oxygen has only two.

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The dots that make up the figures in the movie are the oxygen atoms in the molecule, Heinrich said.

WSJ: IBM makes tiny movie by pushing molecules around

That could cause the oxygen to become liberated from water molecule and turned into a gaseous form.

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The IBM team's innovation to create the first single molecule picture, of a molecule called pentacene, was to use the tip to pick up a single, small molecule made up of a carbon and an oxygen atom.

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If you zap purified water with electric current, you can split apart a water molecule into a positively charged hydrogen ion and a negatively charged hydroxide ion (oxygen attached to hydrogen).

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