This document contains notes on quantitative chemistry from the IEB SAGS. It also includes all the IEB definitions from the SAGS that are you are required to learn as well as explanations of the several concepts in this section.
1. Basicpartides
>
noble gases are metals made of atoms
>
covalently bonded substances are made of molecules
> ionic substances (salts ) are made of positive and
negative ions (formula unit =
single
group of ions
representing the salt formula )
2. Chemicalformulae
ammonium NHI
Mnoa
-
permanganate
nitrate NO 3-
-
nitrite Noa
hydroxide OH
-
chlorate [ 105
CH , COO
-
etnanoate
-
hydrogen carbonate HC 03
5042
-
sulfate
so }
-
sulfite
hydrogen sulfate Hsoci
co }
-
carbonate
52032
-
thiosulfate
dichromate crz OF
poof
-
phosphate
Atomic number (2) : number of protons in the nucleus of an atom
mass number (A) :
number of protons and neutrons in the nucleus of an atom
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