i like spamming the class blog with notes hahahah, you should try it it's fun ttm. anyway, some more science notes. actually these are all the science notes that ms diana gave but this is for people like DHARNIA who depend on computers to study.

so Chemical formulas:
Hydrogen: H(2)
Chlorine: CL(2)
Oxygen: O(2)
Iodine: I(2)
Nitrogen: N(2)
Water: H(2)O
Carbon monoxide: CO
Carbon dioxide: CO(2)
Sulphur dioxide: SO(2)
Ammonia: NH(3)
Methane: CH(4)
Chloromethane: CH(3)CL
Glucose: C(6)H(12)O(6)
Phosphorus: P(4)

and Valency:
Na (sodium): 1
K (potassium): 1
Ag (silver): 1
Cu (I): 1
Cu(II): 2
Hg (mercury): 2
Zn (zinc): 2
Mg (magnesium): 2
Ca (calcium): 2
Fe(II): 2
Fe(III): 3
Al(aluminium): 3

H (hydrogen): 1
Cl (chlorine): 1
I (iodine): 1
O (oxygen): 2
S (sulphur): 2, 4, 6 (although 2 is the most common)
C (Carbon): 2,4 (4 is more common)
N (nitrogen): 3,5 (3 is the most common)

additional notes:
- mono, di and tri is only for covalent bonding.
- so for chemical formulas like Fe(2)O(3), we call it Iron(III) oxide, not iron trioxide.

i'll post more when i have more notes! right now, all the best in studying. science is going to be difficult (according to ms diana) but we can do it! (: we got 4th in the cohort for science last year remember? oh btw there are science notes at the bottom if you scroll right down.