unit 1 chemistry atoms 0.0 / 5 ? ChemistryatomsASEdexcel Created by: JaderoseCreated on: 16-02-14 16:18 what the relative mass of an electron? 1/1840 1 of 16 whats an isotope? atoms of the same element that contain a different number of nuetrons 2 of 16 give an example of a isotope carbon-12, carbon-13, carbon-14, 3 of 16 whats mass spectrometry? acurate measurement to determine relative isotopic mass compared to carbon 12 and the relative abundance 4 of 16 what are the uses of mass spectrometry? carbon 14 dating, drug testing, forensic science and space exploration 5 of 16 what does atomic number mean? tells you the number of protons in the nucleus identifies the element 6 of 16 what's the mass number? total number of protons and neutrons in the nucleus 7 of 16 why are the chemical properties of isotopes the same its the number and arrangement of electrons that decide chemical properties and they have the same configuration of electrons 8 of 16 why are the physical properties of an isotope different physical properties depend more on the mass of an atom and neutrons effect the mass 9 of 16 whats the relative atomic mass average mass of an atom compared to 1/12 of carbon 12 10 of 16 whats the relative isotopic mass the mass of an atom of an isotope compared to 1/12 of carbon 12 11 of 16 what the relative molecular mass the average mass of a molecule compared to 1/12 of carbon 12 12 of 16 whats the molecular mass of H2O? h=1 0=16 molecular mass =(1x2)+16 = 18 13 of 16 whats the molar mass of H2O? the sane as the molecular mass 18g per mol 14 of 16 how do you find the no of moles with molar mass mass of substance/molar mass 15 of 16 how do you find the no of moles with volume and concentration concentration x volume when they are in dm3 or if not after divide by 1000 16 of 16
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