Chemical Reaction of metals with water.

1. Reaction of metal
with Water

2. Reaction of metal with Water
Metal + Water →Metal + Hydrogen
hydroxide gas

3. Reaction of metal with Water
• Reaction of metal with Cold Water
• Reaction of metal with HOT Water
• Reaction of metal with Steam

4. Reaction of metal with Cold Water
Highly reactive metals react with cold
water itself
• Sodium Na
• Potassium K
• Calcium Ca

5. Reaction of Potassium(K)with Cold Water

6. Reaction of Potassium(K)with Cold Water
https://www.youtube.com/watch?v=veR3gNXs8LQ
https://www.youtube.com/watch?v=l4T621HVreM
2K (s) + 2H2O (l) → 2KOH (aq) + H2 (g)
Form colourless basic potassium hydroxide solution
Burn with lilac (pink) color

7. Reaction of Potassium(K)with Cold Water

8. Reaction of sodium(Na) with Cold Water
https://www.youtube.com/watch?v=ChyWtE5j2
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2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
The reaction is exothermic
It catches fire

9. Reaction of sodium(Na) with Cold Water

10. Reaction of Calcium (Ca)with Cold Water
https://www.youtube.com/watch?v=UMqPKQKa
mhk
Ca(s) + 2H2O(l) → Ca(OH)2 +H2
heat evolved is not sufficient for
the hydrogen to catch fire.

11. Reaction of metal with HOT Water
Magnesium does not react with
cold water. It reacts with hot
water to form magnesium hydroxide
and hydrogen.

12. Reaction of Mg(Magnesium) with HOT Water
Mg(s) + 2H2O(l) → Mg(OH)2(s)+H2(g)
Magnesium + Water → Magnesium + Hydrogen
hydroxide gas

13. Reaction of metal with Steam
Metals like aluminium, iron and zinc
do not react either with cold or hot
water.
React with steam

14. Reaction of metal with Steam
Metal + Steam →Metal Oxide +Hydrogen
2Al(s) + 3H2O(g) → Al2O3(s) + 3H2(g)
3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)

15. Metals Does not React with Water
lead, copper, silver and
gold

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