The mass of atoms 2.0 / 5 based on 1 rating ? ChemistryAll LevelsAQA Created by: Brain...Created on: 19-05-13 14:10 Every atom has the same number of... Electons and Protons 1 of 9 The Number of Protons is the... Atomic Number (Bottom of letter) 2 of 9 We can work out the number of neutrons by? Mass-Atomic number 3 of 9 Explain Isotopes Atoms of the same element always have the same number of protons. HOWEVER, they can still have different numbers of neutrons 4 of 9 For the Empiracal Formulae what MUST you always remember? Put it all to ratio! 5 of 9 Explain Reversible Reactions The Experiment can go both ways 6 of 9 How can we identify Food additives? One techinque is paper chromatography 7 of 9 Explain the first step in gas chromatography? The Sample mixture is vapourised. 8 of 9 Explain the second step in gas chromatography? A 'carrier'gsas moves the vapour through the coiled column. 9 of 9
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