CHEMISTRY 3 All you need to remember...

Analytical chemists: check the purity of the water.

Two types of analysis:

• Qualitative
• Quantitive 
  
  

  Qualitative: Tests the kind of chemical present
  Quantitative: Tests the amount of chemical present 

FLAME TESTS:

CALCIUM: BRICK RED

SODIUM: YELLOW

POTASSIUM: LILAC

COPPER: GREEN

HOW TO TEST FOR ACID SOLUTIONS (to check for H+ ions)

LITMUS PAPER: Turns red

UNIVERSAL INDICATOR: Turns red

SPLINT : Goes pop

Precipitation reaction: Add few drops of sodium hydroxide to the unknown solution.

Aluminium:  White precipitate  [With excess- would dissolve]

Calcium: White precipitate  [With excess-would not dissolve]

        [Since these two tests are similiar add excess of Sodium Hydroxide] 

Copper: Blue 

Iron (II):  Green

Iron (III):  Brown

Ammonium: None