GCSE Chemistry 0.0 / 5 ? ChemistryAtoms and compoundsGCSEAQA Created by: mrs staniforthCreated on: 28-03-22 13:28 Structure of an atom Nucleus in the middle with the protons and neutrons. Electrons around the outside in electron shells or energy levels 1 of 5 Definition of an element A substance made up of only one type of atom 2 of 5 Definition of a compound A substance made up of more than one type of atom, chemically joined together 3 of 5 definition of a mixture A substance made up of more than one type of atom not chemically joined together 4 of 5 sub atomic particles proton 5 of 5
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