Comments on: O Level Chemistry: Energy Changes (Endothermic & Exothermic Reactions)

By: sean

sean — Mon, 09 Feb 2009 08:20:24 +0000

Hi “small boy”,

Care to share the reason behind your answer being A??

Look forward to your response.

Cheers
Sean

By: small boy

small boy — Sun, 01 Feb 2009 08:54:35 +0000

i think is a

By: sean

sean — Tue, 08 Apr 2008 13:17:15 +0000

Hi. Answer is A. Check out my earlier comments to understand the reason.
Always be clear what is the subject (body) and what is the environment. When
they ask about temperature change, ask yourself this question – are they asking
about the subject or the environment.

To Your Academic Success in Chemistry,

Sean
Master Trainer
Author

By: Nitratez

Nitratez — Mon, 07 Apr 2008 21:00:03 +0000

Isn’t it B ???

By: Anonymous

Anonymous — Tue, 23 Oct 2007 03:31:00 +0000

the reaction is endo….because it absorb heat to break bond so the temperature will fall