Formulae and equations 0.0 / 5 ? ChemistryFormulae and equationsGCSEAQA Created by: emewsCreated on: 11-11-17 09:38 True or false? Mass is never lost or gained in chemical reactions. TRUE! 1 of 5 Total of mass = Total mass of reactants. 2 of 5 What are the reactants and products of this equation: copper + oxygen ---> copper oxide Copper and oxygen are the reactants and copper oxide is the product. 3 of 5 What does the chemical formula of a compound show? The chemical formula shows how many of each type of atom join together to make the units which make up the compound. 4 of 5 How is the emprirical formulae found in an experiment? It is determined using data from experiments. 5 of 5
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