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In this reaction you are going to add metals to acid and time how long the reaction takes to finish.

The reaction that finished the quickest is the one involving the most reactive metal.

Apparatus and chemicals

• 250 cm³ beaker
• 100cm³ measuring cylinder
• 0.5g of each test metal - magnesium, zinc and iron
• Hydrochloric acid (300cm³)
• Stopwatch