Saturday, April 23, 2016

SPM Chemistry Tips #2 - Answer for How to write an observation?

Salam dan hye students,

So, can you find the answer for stating Observation atau pemerhatian khas untuk Paper 3?

Lets discuss it here;


For Set I:

Observation 1 : Before the reaction the colour of solution is blue, but after the reaction the colour of solution is colourless
ANSWER : Blue solution turns to colourless.

Observation 2 : Initial temperature is 28 degrees C, but the highest temperature is 36 degrees C.
ANSWER : Temperature increases through out the experiment // The reaction is exothermic reaction.

For Set II:

Observation 3 :  Before the reaction there are solid Ammonium chloride, but after the reaction Ammonium chloride solution is formed.
ANSWER : Solid dissolve to form colourless solution

Observation 4 : Initial temperature is 29 degrees C, but the lowest temperature is 25 degrees C.
ANSWER : Temperature decreases through out the experiment // The reaction is endothermic reaction.

So, now everybody can get 3 full marks for stating observation in Paper 3 Chemistry.
Good Luck!