White ppt vs No ppt formed (solution)

Ppt = SOLID is present



1. Test tube 1 contains a colourless SOLUTION.
2. Test tubes 2, 3 and 4 ALL contain WHITE PPT.
3. There is NO SUCH THING as a "white solution" or a "colourless ppt".

Observations for this experiment:
Test tube 1: Colourless solution formed.
Test tubes 2/3/4: White ppt formed.


SOLUTION = no solid present


1. All these test tubes contain SOLUTIONS.
2. You can tell a test tube contains a solution because there is NO SOLID in it at all.
3. If you are not sure, hold the test tube against white light (e.g. window) or a white piece of paper to see clearer.
4. If after mixing, you get any of the above results, you will describe your observations as:

Test tube 1 = Dark blue solution formed
Test tube 2 = Green solution formed
Test tube 3 = Purple solution formed
Test tube 4 = Orange solution formed
Test tube 5 = Yellow solution formed
Test tube 6 = Pink solution formed
Test tube 7 = Pale blue solution formed

(courtesy of Ms Bernice Chen)