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Monday, February 18, 2013
Terminology Kimia yg sgt cumei
Searching sj2 td terjumpa terminology chemistry acid n base yg sgt menarik...senang lh nak ingat kimia nt ea...saper2 yg amik chemistry, wish you al the best...smga dpt result kimia yg terbaik....amin...
<< having fun with chemistry >>
What is an acid?
For our purposes, acids are like Santa, they give and give and give,
never taking anything. Except instead of presents, acids give their
protons (H+) to other molecules (children). Strong acids like
hydrochloric acid (HCl) are generous, and give away all of their
protons, even if there are no molecules (kids) to take them! Weak acids
are cheap - they only give away some of their protons (H+) and keep
some for themselves.
What is a base?
Bases are all those pesky little kids out there asking for presents
(protons - H+). Now as we all know, some kids are greedier than others.
Weak bases are those normal, unspoiled kids who will take a present
(H+) if Santa gives it to them. Strong bases like sodium hydroxide
(NaOH) are those pesky little spoiled brat kids who take every single
present (H+) they can, and are even willing to steal from Santa (weak
acid) if he's being cheap!
*I am describing here the
Bronsted-Lowry acid base theory. There are other acid-base theories,
the most common of which being Lewis Acids and Lewis Bases.
>> for more information, click lah di bawah ni ea =)
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