Saturday, April 25, 2009
was doing SS homework just now and suddenly ended up talking with chiwen on msn for an hour.talked to her about alot of things.everything from our class,the very clever people in our class to O'levels,aims and choice of course.and today morning was chemistry extra lesson.was rather fun.for some reason,mr tan started calling us didi and meimei,and soon samuel called him Chang Ci gor gor,which obviously made everyone laugh.the whole session was rather funny with alot of laughter and sorts.but it was also a fun session which was serious at the same time.today,i actually found out why AMMONIUM NITRATE,and ionic compound with a giant ionic structure has a low melting point.it is stated in the textbook under the properties and structures chapter that
most compounds with giant ionic structure has high boiling and melting points,but i did not know why Ammonium Nitrate is so special that it has a low melting point,but i finally learned it today,thanks to Mr Tan!