Acids and Alkalis

• Aq 


  aqueous solution-dissolved in water
• in aqueous solutions what do acids produce


  Hydrogen ions
• Bases

  Chemicals which can neutralise acids producing a salt+water
• Examples of Bases

  usually metal oxides or metal hydroxides
• alkalis

  bases which are soluble in water
• what do alkalis produce

  hydroxide ions
• PH scale

  tells us the acidity or alkalinity of a solution
• Acids PH

  O +6
• neutral acids PH

  7
• Alkaline PH

  8 + 14
• what can u use to determine the ph

  a universal indicatior+PH probe
• differences between PH probe+universal indicator

  Probe=determines the PH electrically.Indicator=changes colour
• neutralisation equation

  hydrogen ion + hydroxide ion = water