EDEXCEL GCSE ADDITIONAL CHEMISTRY Atomic structure and the periodic table 3.5 / 5 based on 2 ratings ? ChemistryGCSEEdexcel Created by: nickCreated on: 28-04-13 15:24 What is the atomic mass of an atom? Protons + neutrons 1 of 10 Which scientist came up with the law of octaves? Newlands 2 of 10 What is the group number of the halogens? The noble gases are group eight. 3 of 10 What is the atomic number of an atom? The number of protons and neutrons is the atomic mass. 4 of 10 What is an isotope? An isotope has the same protons but different neutrons. 5 of 10 What is the charge on a neutron? It has no charge 6 of 10 What is the relative atomic mass of carbon? 12 7 of 10 How many neutrons does potassium have (atomic number 19, mass number 39)? 20 8 of 10 How many neutrons does aluminium have (atomic number 13, mass number 27)? Aluminium has 14 neutrons (27-13=14). 9 of 10 How many electrons does potassium have (atomic number 19, mass number 39)? 20 is the number of neutrons. 10 of 10
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