CHEM*1040 – Review
THINGS YOU NEED TO KNOW:
; are the basic building blocks of
e.g., hydrogen (H), oxygen (O) and carbon (C)
one of two or more atoms that have the same atomic number but different
atomic masses, e.g.,
H (deuterium) and
H (tritium) are all isotopes of
are formed when atoms combine due to attractive forces, e.g., molecular
oxygen, water, carbon dioxide, ammonia, methanol (CH
(refer to Table 2.1) can be
(composed of one atom) or
(composed of two or more atoms)
metals, e.g., Fe, Cr, Ag, Na, Ca, etc.
American spelling of S is sulphur; the Canadian/British spelling of S is sulphur.
indicates there are two
atoms combined together, i.e., molecular oxygen is diatomic.
is an abbreviated description of the composition of a molecule.
What do these tell you?
number and type of atoms present, ratio between the atoms)
What do they
(i.e., molecular geometry: arrangement/orientation of the atoms, types of bonds, angles)