Chemical reactions 0.0 / 5 ? ChemistryEnergy of reactions/Exothermic and endothermic reactionsGCSEAQA Created by: MillieCreated on: 30-04-13 18:34 What is a compound? A compound is a product of which 2 or more atoms are chemically bonded together 1 of 5 What is an ion? A compound formed from metals AND non-metals 2 of 5 What bond are molecules in atoms held together by? Covalent bonds 3 of 5 What is an element? A product made up of one TYPE of atom 4 of 5 What is the mass of the products in a chemical reaction equal to and why? The mass of the reactants and because no atoms or lost or made during a chemical reaction 5 of 5
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