I need help with the last four! The reactant is CaCO3 and it’s products of the reaction is CaO and CO2.

Type one to two paragraphs that describe your models and relate them to the law of
conservation of mass. Your document should:
i identify the names of the reactants and products in the reaction.
ii. identify the number of molecules that make up the reactants and products.
iii. identify the type and number of atoms in each molecule of the reactants and products.
iv. explain what happens during the chemical reaction.
v.
explain how mass is conserved during the chemical reaction.