Patterns of Reactivity

Patterns of Reactivity

1. Reactions

   • Metals will gradually react with he air and water fro the atmosphere.
   • Copper and gold will not tarnish even after a long time.
   • Sodium and potassium tarnish so quickly that they needed to be stored into oil.
   • Sodium and potassium are alkali metals. They are soft and easy to cut.

2. Water Reactions

   • Some metals react with cold water to produce hydrogen.
   • Some metals react more readily with water than others.

3. Acidic Reactions

   • Metals react with acids to produce hydrogen and a salt.
   • Some metals react more readily with acids than others.
   • Some metals do not react with acid.

4. Oxygen Reactions

   • Metals react with oxygen to form oxides.
   • The reactivity series for metals with oxygen is generally similar to tat for water and acids.

5. Displacement Reactions.

   • In a displacement reaction, a metal displaces a less reactive metal from a solution of one of its salts.
   • We can use the order of reactivity of metals to make predictions about other metals that have not been observed.

6. Metals

   • Metals have a variety of different uses

7. Extraction

   • The reactivity of a metal affects its uses and the extraction method from is ore.
     • Less reactive metals such as iron are extracted by reactin the ore with carbon. They way iron is extracted rom haematite.
     • Reactive metals such as sodium need t be extracted by electrolysis.