Water hardness

Added by Lawrie Ryan on Feb 27, 2008

An interactive animation illustrating an experiment to investigate which metal ions cause water hardness. Click the highlighted areas to add the ions to water with a little soap added. Hard water does not easily lather and forms scum on the surface.

This resource is from the unit Hard Water which is part of Absorb Chemistry.

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Terms of Use

You may view the resource online free of charge. However, if you wish to download the resource then you must first purchase either Absorb Chemistry or Absorb Chemistry Resources.

Use download if you wish to use the resource offline or if you wish to include the resource in a PowerPoint presentation or in whiteboard authoring software provided by companies such as Promethean or Smart.

As well as Absorb, Crocodile Clips also publishes Yenka software for simulating chemistry. Yenka is free to use at home.

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