The exercise will give you practice in planning a fair Michelle and Justin are carrying out an investigation into the reactivity of different metals with dilute acids. They place a small piece of each metal into a test tube of acid and observe the reaction. 1 How can they tell that a reaction has taken place? a 2 How can they tell which metal is more reactive? Michelle carries out the test on zinc and lead. Justin carries out the test on copper dilute and aluminium. Michelle uses dilute hydrochloric acid and Justin uses very sulfuric acid for his tests.
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When metals react with other substances, the metal atoms lose electrons to form positive ions.
The reactivity series of metals is a chart showing metals in order of decreasing reactivity. In general, the more reactive a metal is:
the more vigorous its reactions are
the more easily it loses electrons in reactions to form positive ions (cations)
The table summarises some reactions of metals in the reactivity series. Hydrogen and carbon are shown for comparison.
Explanation:
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