Acid + Metal ------> Salt + Hydrogen
An experiment to show this is:
- Put some metals in seperate testubes (magnesium, aluminium, zinc, iron and copper)
- Add equal amounts of dilute HCl
- Light a splint over each testube and judging by the squeaky pop you can recognize the metal
The more reactive a metal is, the faster the reaction will go. So very recative metals will react explosively. From the Experiment above, the copper metal will not react at all because it is less reactive than hydrogen. The speed of the reaction is calculated by the rate at which the bubbles are given off.
Hydrogen is recognized by the squeaky pop test!
In the equation you can guess the name of a salt by which metal is used and which acid.
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