Chemical Formulae and Equations

Write accurate formulae for elements, simple covalent compounds, and ionic compounds using appropriate chemical symbols.
Deduce the correct formulae of Group 1 and Group 7 compounds using the known formulae of their constituent common ions.
Write and mathematically balance chemical equations using the names and symbols of the first 20 elements, as well as elements from Groups 1, 7, and 0.
Describe the physical states of reactants and products in chemical equations using standardized state symbols.

What you need to know