Chemist June 14

Chemist June 14

* What does a chemist do?
A chemist is a scientist who researches and experiments with the properties of chemical substances. They measure the effects of chemical compounds in various situations and study inter-chemical reactions.

* Practical: Big Pieces / Small Pieces
   Use: Quiz Eze Tablets
   Expt: For each of the following use 60 ml water and record to dissolve completely. You will have 4 beakers.
a) Use a whole tablet
b) Cut 1 tablet in half and put both into water
c) Cut 1 tablet into 4 pieces and put all 4 pieces into water
d) Crush 1 tablet and add all of it to water

Result:                               Time:
Whole tablet                      15:00 minutes
Halved tablet                     11:17 minutes and seconds
Quartered tablet                   
Crushed tablet                   2:15 minutes and seconds

Explanation:
The crushed one works faster than the whole tablet because the crushed one is easier to be dissolve by the water.