2012年11月8日 星期四

Solubility of salts

鉀鈉銨鹽皆可溶,
硝酸鹽遇水影無踨 ;
硫酸鹽不溶鉛鋇鈣,
氯化物不溶銀汞鉛。

2012年10月11日 星期四

2012年9月3日 星期一

2012年8月7日 星期二

2012年5月21日 星期一

Teachers always derive K expressions from forward and backward rate expression. The coefficients in it are always taken directly from the equation. However, we always stress on the concept that coefficients in the rate law should be experimentally found. Is there a problem with that ? A teacher has hidden a brief explanation to this in my topic of equilibrium. Can you find it out ?

http://chung.sk.tripod.com/11/notes_eqm2.swf

One of the advantages of ebook is to take care of individual differences. Buttons and links in ebook can bring learner to an advanced level, a lower level or to show the detail steps of a calculation, a procedure. This may suit learners of different learning abilities.

2012年4月27日 星期五

The Effect of Surface Area on Reaction Rate 

The video is a demonstration on how rate of reaction is being affected by surface area, produced by Royal Society of Chemistry and is interesting. Traditionally in laboratory marble is used, but in this demonstration some milk powder is used. Click to view the video.

2012年4月26日 星期四

Stimulation of equilibrium

To investigate the chemical equilibrium of H2 + I2 <=> 2HI http://chung.sk.tripod.com/11/simulate_eqm.swf

2012年3月8日 星期四

Effect of concentration on chemical kientics

The simulated kinetics experiment is programmed by Mr LEE Ka-ming of CCC Yen Ching College.

It is quite authentic, and allows students to do data analysis without the need to handle the intricate colorimeter.

http://www.yenching.edu.hk/chemistry/kinetics_colorimeter.html

2012年1月9日 星期一