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This was insanely helpful, thank you; I had no idea how to approach the essay since my teacher glossed over the topic. :S

Thanks for the link - my life has gotten at least a 1000 times easier. >>" After note: the fb page features a genuinely informative video on HSC mark moderation, so it'll be worth visiting on a holistic level.

Common substances (acidic, neutral, or basic): Acidic - aspirin, wine, lemon juice, vinegar, ammonium ions in hair dye (NH4+), urine (uric acid) Basic - cloudy ammonia (NH3), antacid tablets, oven cleaners, blood (ph 7.35) Neutral - water (distilled or pure for an exact ph of 7), sugar, salt...

http://community.boredofstudies.org/showthread.php?t=284599 and ctrl + f to "Intermolecular forces fall into two categories" :P + http://www.ausetute.com.au/intermof.html for further reading. Realised the holes of information in the prior link. =_=

I have no idea how to approach D4rkfang's Q at the moment, so-- What is an example of an everyday decomposition reaction? Cellular respiration, which involves the decomposition of glucose. C6H12O6(aq) + 6O2(g) ==> 6H2O(l) + 6CO2(g) + ATP (aka adenosine triphosphate) And I just want to say that...

Since it hasn't been formally mentioned, the preliminary formula required for this Q is: [H^+] = 10^(-pH) (derived from the original pH = - log[H^+]) #potentially redundant chem post

Jumping on the email bandwagon; and thanks in advance :L