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Rationales
Included
, Matter Most basic building block. Must have mass and volume
Elements Simplest form of matter, can't decompose any further
Molecules Two or more atoms "linked" together
Compounds Mixes of two or more elements bonded together
Sig Fig.- x & / As many as the least number
Sig Fig.- + & - As many as the least behind the decimal point
Law of Definite Composition Components in a compound always have the same ratio by mass
Law of Multiple Proportions Ratios of elements that combine to make a compound are always in fixed,
whole number, proportions
Atom Distinguishing The only thing that distinguishes one atom from another is the number of
protons
Isotopes Sam element, different number of neutrons
Cation Carry the positive charge, a metal
Anion Carry the negative charge, non-metal
Diotonics O₂, H₂, N₂, F₂, Cl₂, .....
Covalent Naming Name both compounds with number prefix
mono, di, tri, tetra, penta
CO₂ Carbon dioxide