THE CHEM PRACTICAL
today we had 2 periods of chem prac.
something no one looks forward to. -______-
anyhow we had to follow instructions given from a piece of paper & find out the anions & cations & our observations.
how very exciting.
so yeah, qianwei's my lab partner bytheway. haha.
the practical was going rather smoothly. i was rather enjoying myself & i started a Barium Nitrate tune which i started singing until i used Silver Nitrate. HAHA. the pouring of chemicals went out rather well. no major screw-ups happened.
there was this part where we had to pour Sulphuric Acid to this unknown powder.
because i was really tired & all, i jus poured all the acid in. bubbles formed really fast & the whole thing started spilling out of the test-tube. if i didnt remember wrongly, i think mr tan sort of scolded me but i did not care because it amused me alot. HAHAH.
but halfway, qianwei&me were sent out of the lab for 5 minutes for not wearing goggles when using the bunsen burner. i was warming my devona's alloy (whatever its called), sodium hydroxide & liquid Y (i think) when a sudden reaction occured, causing the whole thing to sort of explode like a volcano. what was worst, the solution was grey in color with bits of black stuff. gross. okay, im making it sound so drama but truth is, bubbles started forming very quickly & almost all the liquid spilled out. that kinda shocked me but i was amused at the same time. so lame lah. i walked about the corridor & said hi to timothy. HAHA.
after 5 minutes we were called back & i continued with the stupid experiments. i was starting to get bored because there were no more cool reactions going on. there was a second use of the bunsen burner & mr tan was standing behind. i guess he was observing us. we were supposed to heat up this powder Z1 which i had done before.
the Z1 would change to yellow upon heating & return to its original color, white, when cooled. LIKE SO LAME LAH. it is supposed to decompose when heated, thus turning yellow. ERRR. because after heating up Z1 powder we were supposed to get 2 more spatulas of Z1 to do another experiment but i was so lazy i used the previous Z1 powder which was heated up before because i knew the Z1 would turn back to its original state after cooling.
after that we did not have sufficient time so mr tan asked us to continue tomorrow. wow. im so looking forward to it can.
oh one more thing. i am a very unhygenic user of test tubes. i often use the same test tubes over & over again & sometimes i dont use Nitric Acid to wash the tubes. HAHAH.
*
haha. i also forgot to add.
after assembly qianwei, patricia & me went to find timothy. he then asked me whether he could could throw my water bottle down. i agreed, thinking he would only aim at the stones. but instead he flung it into the oh-so-"clean"-&-green (literally) pond. :)
he went down to pick it up & i asked him to throw it into the bin.
something no one looks forward to. -______-
anyhow we had to follow instructions given from a piece of paper & find out the anions & cations & our observations.
how very exciting.
so yeah, qianwei's my lab partner bytheway. haha.
the practical was going rather smoothly. i was rather enjoying myself & i started a Barium Nitrate tune which i started singing until i used Silver Nitrate. HAHA. the pouring of chemicals went out rather well. no major screw-ups happened.
there was this part where we had to pour Sulphuric Acid to this unknown powder.
because i was really tired & all, i jus poured all the acid in. bubbles formed really fast & the whole thing started spilling out of the test-tube. if i didnt remember wrongly, i think mr tan sort of scolded me but i did not care because it amused me alot. HAHAH.
but halfway, qianwei&me were sent out of the lab for 5 minutes for not wearing goggles when using the bunsen burner. i was warming my devona's alloy (whatever its called), sodium hydroxide & liquid Y (i think) when a sudden reaction occured, causing the whole thing to sort of explode like a volcano. what was worst, the solution was grey in color with bits of black stuff. gross. okay, im making it sound so drama but truth is, bubbles started forming very quickly & almost all the liquid spilled out. that kinda shocked me but i was amused at the same time. so lame lah. i walked about the corridor & said hi to timothy. HAHA.
after 5 minutes we were called back & i continued with the stupid experiments. i was starting to get bored because there were no more cool reactions going on. there was a second use of the bunsen burner & mr tan was standing behind. i guess he was observing us. we were supposed to heat up this powder Z1 which i had done before.
the Z1 would change to yellow upon heating & return to its original color, white, when cooled. LIKE SO LAME LAH. it is supposed to decompose when heated, thus turning yellow. ERRR. because after heating up Z1 powder we were supposed to get 2 more spatulas of Z1 to do another experiment but i was so lazy i used the previous Z1 powder which was heated up before because i knew the Z1 would turn back to its original state after cooling.
after that we did not have sufficient time so mr tan asked us to continue tomorrow. wow. im so looking forward to it can.
oh one more thing. i am a very unhygenic user of test tubes. i often use the same test tubes over & over again & sometimes i dont use Nitric Acid to wash the tubes. HAHAH.
*
haha. i also forgot to add.
after assembly qianwei, patricia & me went to find timothy. he then asked me whether he could could throw my water bottle down. i agreed, thinking he would only aim at the stones. but instead he flung it into the oh-so-"clean"-&-green (literally) pond. :)
he went down to pick it up & i asked him to throw it into the bin.
posted by she-man at 6:59 PM
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