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5 unknown metals labelled A-E Ca being most reactive : (from blue tray chem prep.)
Hazcard :
If possible both in normal and powder form in beakers A-E
Calcium metal Granule and powder 16
Magnesium Ribbon 59A
Aluminium metal and powder 45
Zinc metal and powder 107
Iron metal and powder 55A
Copper metal 26
lead metal and powder 56
Dilute HCl and pipettes 47A
Metal tongs
beakers
optional : Gas On
Heat proof gloves
Distilled water
Tripod, gauze, heat proof mat, Bunsen burner
Test tubes + rack + test tube holder (wooden)
The Reaction of Metals with Hydrochloric Acid
All you need is a selection of metals, dilute hydrochloric acids, rack of test tubes and a splint.
Ideally all the metals would be in the same physical state, other than all being solids, i.e. same sized granules or same sized sheet of same thickness. However this is isn't possible within a school laboratory (or its budget!).
The experiment is extremely easy to do, simply add similar sized small portions of the metal to a few cm3 of cold dilute hydrochloric acid.
Keep an eye on all of them at the same time and note any changes and the relative rate of evolution of gas bubbles.
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