Tuesday, March 3, 2009

Today

Today i learnt...



The lab can be a dangerous place.














Haha, that is if we dont follow precautions!

Lab safety is crucial as there is presence of highly volatile substances (Eg. propane) as well as other elements of malice (Eg. Bunsen burner)

Eating and drinking should also be avoided as my previous chem teacher once said that chlorine gas can react with water, which when consumed.....(something bad will happen)

Apart from safety, we should practice our lab skills so as to be precise and accurate. I learnt that random errors can be reduced by repetition of procedures and observations while systematic errors cannot be reduced as such.

Finally, must remember to express readings according to the D.P. of smallest division of the instrument :)

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