Combined Science Chemistry C1 - Elements 0.0 / 5 ? ScienceChemistryElementsGCSEAll boards Created by: liv_hollieCreated on: 29-03-18 20:16 What in the nucleus decides what type of atom it is? The number of protons 1 of 5 What is a substance that only contains atoms with the same number of protons called? An element 2 of 5 What are isotopes? Different forms of the same element with the same number of protons, but a different number of neutrons 3 of 5 Isotopes have... The same atomic number, but different mass numbers 4 of 5 Relative atomic mass of an element = sum of (isotope abundance x isotope mass number) / sum of abundance of all the isotopes 5 of 5
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