Chemistry 0.0 / 5 ? ChemistryKey TermsGCSEAQA Created by: Jessica8Created on: 27-02-17 22:01 what is an atom the smallest part of an element 1 of 16 what is an element a substance containing only one type of atom 2 of 16 what is a molecule particle made up from atoms joined together 3 of 16 what is a compound substances made from different elements chemically bonded together 4 of 16 what is the atomic number number of protons in an atom 5 of 16 what is an electron a negative charge particle. orbits the nucleus of an atom 6 of 16 what is the electronic structure the arrangement of electrons in the shell 7 of 16 what are energy levels the region an electron occupies surrounding the nucleus inside an atom 8 of 16 what is an ion an electrically charged particle containing different numbers of protons and electrons 9 of 16 what is an isotope different forms of a particular element 10 of 16 what is the mass number number of protons + number of neutrons in an atom 11 of 16 what are protons a positive charged particle found in the nucleus of an atom 12 of 16 what is the nucleus central part of an atom containing protons and neutrons. 13 of 16 what are neutrons a neutron particle is found in the nucleus of an atom 14 of 16 what is R.A.M the average mass of elements taking into account the mass and amount of each isotope it contains on a scale where the mass of C12 atom is 12 15 of 16 what is a catalysis substance that speeds up a reaction with out getting used yp 16 of 16
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