M4 Periodic Table: Chemical Change
Slide 7 of 35
Representing Reactions
Here are some more examples of word equations:
–Hydrogen + oxygen ¾® Water
–Coal (carbon) + oxygen ¾® Carbon dioxide
–Zinc + Iodine ¾® Zinc iodide
–Aluminum + Iodine ¾® Aluminum iodide
–Aluminum + bromine ¾® aluminum bromide
The other method of representing chemical reactions is to use the formula of the substances involved.
–2Na (g) + O2 (g) à 2Na2O (s)
–2H2 (g) + O2 (g) à 2H2O (l) (Note hydrogen and oxygen and are
                                             diatomic elements)