rain down.

Sunday, May 4, 2008

I realised Jasmine takes AFTERNOON NAPS! HMPH. SO GOOOD!

sorry hor, call when you're sleeping. =.="

Today kinda sianning too. I STUDIED SCIENCE. I can't believe it!! OMG. I STUDIED CAN??! LOL.

Somehow, i am missing the old days in Nanjing AGAIN. I miss so many people there, all of them, so sincere and friendly. AND NO! NOT CAI PEI CHEN that idiot please. He LOVES ANOTHER GAL in Nanjing. ;D So much fun there. I wrote about the trip feelings. 10pages+ long. Have loads of pictures in it! ^^x

I am still in the mist of memorizing the charges of some Common Ions.. >.<*

Anion

Those with -1 charge are:

Chloride ion - Cl-
Bromide ion - Br-
Iodide ion - I-
Fluoride ion - F-
Hydroxide ion - OH-
Nitrate ion - NO3-
Bicarbonate ion - HCO3-

Those with -2 charge are:

Oxide ion - O2-
Carbonate ion - CO32-
Sulphate ion - SO42-

Cation

Those with +1 charge

Potassium ion - K+
Sodium ion - Na+
Lithium ion - Li+
Hydrogen - H+
Silver ion - Ag+
Copper(I) ion - Cu+
Ammonium ion - NH4+

Those with +2 charge

Calcium ion - Ca2+
Magnesium ion - Mg2+
Zinc ion - Zn2+
Barium ion - Ba2+
Iron(II) ion - Fe2+
Lead(II) ion - Pb2+
Copper(II) ion - Cu2+

Those with +3 charge

Aluminium ion - Al3+
Iron(III) ion - Fe3+

Must learn de:

Acids

Hydrochloric acid -> HCl
(Hydrogen + Chlorine)

Nitric acid -> HNO3
(Nitrate + Hydrogen)

Sulphuric acid -> H2SO4
( Sulphur + Hydrogen)

Alkalis

Sodium Hydroxide ->NaOH

Calcium Hydroxide -> Ca(OH)2

Potassium Hydroxide -> KOH

Liquid ammonia -> NH3

Ciao.

rained @ 6:56 PM