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Stoichiometry Cheat Sheet (DRAFT) by

Moles (Year 10) (Topic 5) IGCSE

This is a draft cheat sheet. It is a work in progress and is not finished yet.

General

Valence shell
Outer most shell
Valence electron
Electrons of the outermost shell (group number)
Period number
number of shells
Valency
The number of electrons lost, gained or shared by an electron.
GROUP NUMBERS: I II III IV V VI VII VIII

General

Chemical formula
The formula that represents the number & type of the atoms in a molecule.
Prefix
Tells you how many atoms of each element in formula (monox­ide­/di­oxi­de/­tri­oxide).
*Non-metal ions take the suffix (ide)