1. 4. What substance do we use to test for the cations in the table below?5.
Testing for
Ions
Name of metal ion
Colour of Precipitate (insoluble hydroxides with characteristic colours)
Ionic Equation
Copper
Iron (II)
Iron (III)
1. Starter: What is the difference between a cation and an anion?
2. Write a procedure for carrying out a flame test for positive metal ions.
6. What procedure is used to test for the anions in the table below? 7.
Name of anion
Symbol of ion
Colour of Precipitate
Ionic Equation
Chloride
Bromide
Iodide
3. Complete the table to show what colour flame would be expected for each ion in a flame test .
Name of Ion
Symbol of ion
Flame Colour
Sodium
Potassium
Calcium
Lithium
8. What is the procedure and result when testing for:
Sulphate ions: SO42- :
Carbonate ions CO32- :
Ammonium ions NH4+ :