ZIMSEC O Level Combined Science Notes: The reactions of metals and water

  • Water is a compound of oxygen and hydrogen
  • When metals react with water they remove the oxygen from the water
  • We say the metals displace the hydrogen from the water
  • A metal oxide is formed
  • Freeing up the oxygen
  • The following word equation summarizes the nature of these reactions
  • \text{metal + water}\rightarrow\text{metal oxide+hydrogen}
  • An example of such an equation is:
  • \text{magnesium + water}\rightarrow\text{magnesium oxide+hydrogen}
  • The byproduct of these reactions is hydrogen gas
  • It makes a popping sound when it comes in contact with a lighted splint
  • Calcium reacts much more easily with water
  • Magnesium is less reactive when compared to calcium
  • To speed up the reaction of water and magnesium steam is used instead of water

To access more topics go to the Combined Science Notes page.


Quick NetOne, Telecel, Africom, And Econet Airtime Recharge

If anything goes wrong, click here to enter your query.