What is the effect of using reactants with increased reactivity in a reaction?

Increased reactivity means the reaction will take place more quickly, or more vigorously. 

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How can you investigate the reactivity of a metal using an acid?

 acid + metal ➔ salt + hydrogen


  1. Firstly, react the metal with an acid.
  2. When the metal reacts, bubbles of hydrogen will be released.
  3. The faster the bubbles are produced, the faster the reaction is, and so the more reactive the metal must be. 

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How can you investigate the reactivity of metals using temperature change?

More reactive metals will lead to larger temperature changes.


  1. React each of the metals with either water or acid over a set period of time.
  2. Ensure that the surface area and the mass of the metal is the same each time.
  3. Measure the rise in temperature.
  4. The greater the temperature change, the more reactive the metal must be.

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Why can it be dangerous to react very reactive metals with acids or water?

Very reactive metals can react explosively and produce many bubbles.

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Which metals don't react with water?

Less reactive metals, such as zinc, iron, and copper, don't react with water.

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In displacement reactions, which ions are reduced?

Metal ions are reduced - this means they gain electrons.

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Will acids react more vigorously with hot or cold water?

Hot water. The higher temperature results in a faster rate of reaction.

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Would powered metal, or a single chunk (both the same mass) react more vigorously? 

Powered metal, as it would have a larger total surface area.

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What is a metal displacement reaction?

A reaction in which a more reactive metal displaces a less reactive metal.

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