Writing Chemical Formula Worksheet With Answer Key - Spes Unica
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28Topic 4 National Chemistry Summary Notes
Formulae, Equations, Balancing Equations and The Mole
covalent molecular
The chemical formula of a
compound tells us the
LI 1
number of atoms of each element present in the compound.
E.g. Water H
O -The formula tells us that there are 2 Hydrogen atoms
2
and 1 oxygen atom present in each water molecule.
covalent network
The chemical formula of a
tells us the ratio of the
E
elements present.
E.g. Silicon dioxide, SiO
structure-The formula tells us there are 2
2
silicon atoms present for every 1 oxygen atom.
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