Acids and salts

Acids and salts

1. PH 7 is Neutral

   • Below this is acids
   • Above this is alklains

2. Bases are acids which dissolve in water

   • They can neutralise acids to produce salt and water
     • Acid + Metal oxide ---> Salt + Water Acid + Metal Hydroxide ---> Salt + Water

3. Symbols

   • (aq) means it is dissolved in water as a liquid
   • (I) means liquid that not been dissolved in water
   • (g) means gas
   • (s) means a solid

4. When acids dissolve in water they form H+ ions

   • When alklais dissolve in water they form OH- ions
     • In neutralisation the ions come together to form H2O

5. Naming salts

   • Chloride
     • If hydrochloric acid is used
   • Nitrate
     • If nitric acid is used
   • Sulfate
     • If sulfuric acid is used

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