Fundamental Ideas 4.0 / 5 based on 2 ratings ? ChemistryAtoms and compoundsGCSEAQA Created by: Laura-BethCreated on: 29-11-12 19:39 Element A substance made up of only one type of atom. 1 of 11 Compounds Contain the atoms of two or more elements bonded together. 2 of 11 Neutrons Are neutral with the mass of 1, found in the nucleus. 3 of 11 Protons Have a realtive charge of +1 and mass of 1, found in the nucleus. 4 of 11 Electrons Have a relative charge of -1 and mass of 1/2000. 5 of 11 Atomic Number At the bottom of the atom and is the number of protons. 6 of 11 Number of Protons Number of electrons, meaning the atom has no overall charge. 7 of 11 Mass Number Is at the top of an atom and is the number of protons and neutrons. It is always bigger than the atomic number. 8 of 11 Number of Neutrons Mass number - atomic number. 9 of 11 Chemical Bonds Losing, gaining or sharing electrons. 10 of 11 Energy Shells Inner [2], second [8], third [8]. 11 of 11
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