Tuesday, March 24, 2009

chemistry practical today

we had the chemistry practical for tdy lesson... 

Today we did the titration of NAOH and H2X.. 

Because of the dilution..we only need around a volume of 5.68 cm3 to get to the end of of the experiment. Today Ms Low also let me know that sometimes solution might already be very neat the end point. And therefore even if there is one last drop that change the colour, the colour is change significantly. However, this is alright as it is unavoidable. 

We had already done a few experiments from school term start till now. Now i am already getting use to doing the experiment after resting for 3 years.. 

And as for the planning of experiment, i realised i had done something wrong for it.. No wonder i find it weird when i did it during the holiday..shall discuss more with the rest tomorrow. 


Thursday, March 19, 2009

chemistry 2nd post...

Today i was doing on the designing of the practical for chemistry.  I had realised that actually it is quite to design a good practical assignment, that cater to every needs and method and also procedure for the students to understand how to proceed with the experiment and then link it to getting the overall result that is the aim of the project. 

As for the practical experiment that we had designed, it is quite easy for us as we had been exposed to the same type of experiment before and that we had been learning on the number of moles and so it is still within our ability to design the experiment, 

I find that designing a practical experiment is quite challenging for me as it was a totally new experience for me. But i will try my best to get to familiarize with the procedure and get used to thinking of planning a experiment.