Chemical Formula

A chemical formula is a short-hand method for describing the chemical composition of a molecule/compound.

· __________________ formula – shows the number of atoms of each element present.

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Ex. H2O CaCO3

· ___________________ formula – shows the arrangement of atoms in a molecule

· ___________________ are molecules with the same molecular formulas but different

structural formulas.

Chemical equations describe chemical reactions._________________ form when atoms are joined by chemical bonds. The chemical behavior of an atom is determined primarily be the number of electrons in its ____________ ____________. Atoms will associate with other atoms in order to achieve full outer shells. This is called chemical bonding.

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