
Thursday, September 3, 2009
Normally when there were chemistry classes, we will stay at the class and wait for teacher enters the class. But today, we need to go to the chemistry laboratory. Then, only we know that we going to do the experiment. Teacher explains to us about the experiment. But I don’t understand what teacher talking about! All of us just act understood what teacher explain. At first, teacher wants my group and Tze Ling group do the experiment that burn
Lead(II) Bromide and the
Naphthalene. Luckily, the Malay girls take that experiment so we exchange the experiment with the Malay girls. We did that experiment were the
Sodium Hydroxide solution and
Copper(II) Sulphate solution. Andrea and I group did the
Sodium Hydroxide solution. It was colorless and got a weird smell. Meanwhile, Tze Ling and Chee Ching group did the
Copper (II) Sulphate solution. I quite like the color, the color was blue. Then we just follow all the information and instruction that given by the teacher. When we set up the apparatus, we need to take the solution put into the test tube until full. Andrea’s hand and my hand full with the solution. And the teacher called us not to wash hand because later the hand also will touch that solution again. Without washing the hand, we feel like the hand like burning and quite pain. When the apparatus and material had already fully set up, and observe the gas bubble release to form oxygen and hydrogen gases. The following step will be using burning wooden splinter to confirm that is hydrogen gas with a pop sound and the glowing wooden splinter is to confirm oxygen gas. After our experiment done, we wash hand and it feels very slippery and it just likes soap. Andrea feels her fingernail become corrodes. Meanwhile Tze Ling hand full with blue color solution because she use
Copper(II) Sulphate. And the other group did the experiment by heating the
Lead(II) Bromide and
Naphthalene. While heating, this 2 chemical release the poison smell. The whole laboratory full with that smell and the assistant also feel uncomfortable with that smell. When I smell the gases, I don’t know why I get headache and stomachache. After all the experiment finished, we went back to the class to form a group of dirty minded group. It talked about something sexual. While talking that type of topic, suddenly I feel like stomachache and want vomit. I think it is because of the poison gas make me suffer this kind of pain. Sigh. Now only I know that chemical is quite dangerous but every time do experiment I will get excited with that. Anyway, when do any experiment must be careful to avoid anything happen on us.
♥our lips must always be sealed
7:46 PM