Structure of an atom 0.0 / 5 ? ChemistryAtomsGCSEAQA Created by: Rossill123Created on: 17-04-16 10:40 What is an element? A substance made up of on type of atom. 1 of 6 What is an electron? Negatively charged and the mass is 1/2000. It is found in shells. 2 of 6 What is a proton? Positively charged and found in the nucleus. Mass is 1 unit. 3 of 6 What is a neutron? Neutral. Found in nucleus. Mass is 1 unit. 4 of 6 What is the mass number? Number of protons and neutrons in an atom 5 of 6 What is the Atomic number? The number of protons in an atom. 6 of 6
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