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Edexcel International GCSE Chemistry
Edexcel Certificate in Chemistry


Links for Chapter 9: Acids

Video clips and animations

Magnesium and calcium with dilute hydrochloric acid

The video quality isn't very good, but it is clear enough to show these very vigorous reactions. YouTube

Metals and acids Part 1

A simple look at the way the reactivity of the metals with acids falls as you go down the Reactivity Series. Google Videos.

Metals and acids Part 2

A continuation of the previous video, but several minutes later. The two together show how the true reactivity of aluminium with acids is delayed until the strong oxide coating has been removed. Google Videos

Preparing hydrogen from magnesium and dilute hydrochloric acid

This shows how you could make samples of pure hydrogen from magnesium and dilute hydrochloric acid. It is a slightly scaled up version of the diagram on page 73 of the book, using a flask rather than a side-arm boiling tube, and a different metal-acid combination. From Mike Thompson's ChemPics on YouTube. Be sure to read the information to the top right of the video screen. The next video follows on from this one.

Testing pure hydrogen

This shows the disappointing pop you get if the hydrogen is pure. To make the typical squeaky pop you need some air mixed with the hydrogen. From Mike Thompson's ChemPics on YouTube. Be sure to read the information to the top right of the video screen.

A hydrogen-oxygen mixture exploding

Exploding a mixture of hydrogen and oxygen in a very big balloon. Spectacular. YouTube.

The Hindenberg disaster

Archive footage of the destruction of the Hindenburg airship. YouTube.


Instructions for practical work

I have referred to practicalchemistry.org as a reliable source of instructions for experiments. If you find anything really good from other sources, could you let me know via the address on the about this site page of Chemguide.

Acids, alkalis and salts menu

A long menu of mostly fairly obvious experiments in this area.


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© Jim Clark 2009