C1: Atomic Structure: 1.2: Chemical Equations 0.0 / 5 ? ChemistryAtomsAtoms and compoundsGCSEAQA Created by: AphroditessCreated on: 01-01-18 21:41 What do chemical equations show? Chemical equations show the reactants (the substances you start with) and the products (the new substances made) in a reaction. 1 of 8 What do symbol equations show? Using symbol equations shows you how much of each substance is involved in a reaction. 2 of 8 What is the Law of conservation of mass? The total mass of the products formed in a reaction is equal to the total mass of the reactants. 3 of 8 What does it mean when this Law is broken? When this law is broken, it means it was in a reaction involving gases and were carried out in open containers such as conical flasks and test tubes. 4 of 8 What is the chemical equation for the decomposition of Calcium Carbonate? CaCO3 → CaO + CO2 5 of 8 What are the states and their symbols? Solid, (s), Liquid, (l), Gases (g) and Aqueous (aq). 6 of 8 What is the definition of Aqueous? Aqueous, or aqueous solutions, is the mixture of adding a soluble substance to water. 7 of 8 What is the balanced equation of Hydrogen reacting with Oxygen? 2H2 + O2 → 2H2O 8 of 8
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