Thursday, February 22, 2007

Test Results...


Well im scribe today!!i hate doing This...ahh....well um Ms. K gave the test results awhile ago and it was 38 marks but at least i got a good mark...well um the question that most of us got the wrong answer was question number 8. and the question was ...You have two solutions.One is Green and the other is pink.When you mix the solutions together,a precipitate forms.the remaining solution is pink.Suggest two compounds that could give you these results.
And the answer for this question was
NiCl2 + Mn(OH)2 -----Ni(OH)2(s) + MnCl2


in which Nickel hyrdoxide gives you a precipitate and Manganese Chloride gives you the pink solution


And on Monday and Tuesday we will be doing some test about identifying compounds



and we will be observing and doing some stuff like...


1.Colour of the solutions(don't forget to put some o)


2.Odour(again)-waft vapours to your nose,don't smell it directly


3.flame test on tuesday


4. solubility of ions-ppt. forms


hydroxides-white ppt.


5.Litmus paper-if blue to red then it is acid and if it is red to blue,it is base


*reminder:don't contaminate your solutions and use only one pippette in each solutions..


keikei


the next scribe will be Jess

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