[SC2015] CHEM (9-12) 5 :
5 ) Plan and conduct investigations to demonstrate different types of simple
chemical reactions based on valence electron arrangements of the reactants and
determine the quantity of products and reactants.
a. Use mathematics and computational thinking to represent the ratio of
reactants and products in terms of masses, molecules, and moles.
b. Use mathematics and computational thinking to support the claim that
atoms, and therefore mass, are conserved during a chemical reaction.