chemistry practical...
today's the first practical for the o levels. its the first titration with calculation that i have actualy done in the last two years, and for that i feel that it wasnt that all bad. i actually did the calculations afew times cos i had wierd answers for the first couple of times, i had things like negative Mr and excessively small Mr also. so i just adjusted the calculations around and viola! i had the answer haha.
also, for the second part, the q.a. part, i wasn't totally sure about my answer of sulphate so i did the test for it on all 3 chemicals just to be sure. the conclusion that we had to give was just "the anion present in R is _____ " so i dunno why sooo many tests were required. the other 2 chemicals S and T were also useless. dunno why they put those in... maybe they ran out of questions ? haha. i also dont understand why the steps in the paper today was a little wierd. normally i thought that to test for sulphate of nitrate, adding nitric acid to the sample before adding silver or barium nitrate would be correct? today's paper was like "to a sample of r/s/t , add barium/silver nitrate and leave to stand for a few minutes. next add nitric acid" hmm maybe they are out to get people who wait and wait without seeing any results for the first part...
argh i also got ammonia on my hands!! how sick is that? i forgot that i added aqueous ammonia into one of the test tubes. the result was so faint that i was not sure and decided to cover the top with my thumb and shake (argh). the sodium hydroxide was also terrible, it made my hands so slippery during the prac and when i came out of the lab, my hand was like snake skin. luckily its back to normal now.
after the practical, a whole group of us (eugene, ashley, clifton, nicholas, gabriel, sean, jonathan, mark, kevin, sherman, ian and myself) crowded into the chicken rice stall at far east plaza. whoo the chicken rice there is damn nice, i never expected something from a shopping centre to be so good (or maybe i was hungry), i really must go there again with my parents, just to confirm that its that good.
i thought that there would be many people going back to school after that to study. end up only eugene, clifton, nick and i went back. i don't know why i can't seem to get myself into the mood of studying today and ended up only finishing one chemistry paper1 and lazing around the rest of the time. at about 6pm, i felt like going to the canteen for a drink and asked eugene to come along with me. the moment we stepped out of the room, eugene pointed to the top floor and said "i feel like going there to take photo again" i agreed and went back to call clifton and nicholas go join us and went up to take photo. i had my photo taken when i was standing outside the railing ont he third floor :D
after that we decided to take a walk to the graveyard outside school and walk in for the first time. we walked up the steps and took some photos of school from there. upon reaching the entrance, we freaked out and decided that we should not be there haha. we then crossed the road to the vet to take a look before returning to school. at school, we decided to walk around and go to places which we have never been to before during the last four years in SJI...
also, for the second part, the q.a. part, i wasn't totally sure about my answer of sulphate so i did the test for it on all 3 chemicals just to be sure. the conclusion that we had to give was just "the anion present in R is _____ " so i dunno why sooo many tests were required. the other 2 chemicals S and T were also useless. dunno why they put those in... maybe they ran out of questions ? haha. i also dont understand why the steps in the paper today was a little wierd. normally i thought that to test for sulphate of nitrate, adding nitric acid to the sample before adding silver or barium nitrate would be correct? today's paper was like "to a sample of r/s/t , add barium/silver nitrate and leave to stand for a few minutes. next add nitric acid" hmm maybe they are out to get people who wait and wait without seeing any results for the first part...
argh i also got ammonia on my hands!! how sick is that? i forgot that i added aqueous ammonia into one of the test tubes. the result was so faint that i was not sure and decided to cover the top with my thumb and shake (argh). the sodium hydroxide was also terrible, it made my hands so slippery during the prac and when i came out of the lab, my hand was like snake skin. luckily its back to normal now.
after the practical, a whole group of us (eugene, ashley, clifton, nicholas, gabriel, sean, jonathan, mark, kevin, sherman, ian and myself) crowded into the chicken rice stall at far east plaza. whoo the chicken rice there is damn nice, i never expected something from a shopping centre to be so good (or maybe i was hungry), i really must go there again with my parents, just to confirm that its that good.
i thought that there would be many people going back to school after that to study. end up only eugene, clifton, nick and i went back. i don't know why i can't seem to get myself into the mood of studying today and ended up only finishing one chemistry paper1 and lazing around the rest of the time. at about 6pm, i felt like going to the canteen for a drink and asked eugene to come along with me. the moment we stepped out of the room, eugene pointed to the top floor and said "i feel like going there to take photo again" i agreed and went back to call clifton and nicholas go join us and went up to take photo. i had my photo taken when i was standing outside the railing ont he third floor :D
after that we decided to take a walk to the graveyard outside school and walk in for the first time. we walked up the steps and took some photos of school from there. upon reaching the entrance, we freaked out and decided that we should not be there haha. we then crossed the road to the vet to take a look before returning to school. at school, we decided to walk around and go to places which we have never been to before during the last four years in SJI...
posted by Wayne at 10:46 PM
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