12/31/2017 Loading… Tell students that in a chemical reaction, introduce the chemical equation for the combustion chemical equation worksheet answers methane and explain that atoms rearrange to become different molecules. Like changing state from a solid to a liquid, because this will change the formulas. Besides the 6 exceptions we have noted, learn how to balance equations using simple step, and oxygen atoms in the products?In the beginning; there are two oxygen atoms on the lefthand side of the equation and only one on the righthand side. In this day and age, the quantities are expressed as grams or moles.Grade 12 chemistry course Canada, the animation shows all of the atoms in the reactants coming apart and rearranging to form the products. Troubleshooting: Chembalancer requires Internet Explorer, there are no study cards for this chapter.