C1 1.5 0.0 / 5 ? ChemistryEquationsGCSENone Created by: ex-JohnsonfamilyCreated on: 29-03-15 20:57 Chemical Equations show two things, what are they? Reactants (Substances we start with) and Products (The new substances made) 1 of 5 What is the word equation for the test for hydrogen gas? Hydrogen + Oxygen --> Water 2 of 5 What is the symbol equation for calcium carbonate decomposing in heat? CaCO3 --> CaO + CO2 3 of 5 The total mass of the products formed in a reaction... ...is equal to the total mass of the reactants. 4 of 5 Balance the equation: H2 + O2 --> H20 H2 + O2 --> 2H20. 5 of 5
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