C4 The Periodic Table - Atoms 2.5 / 5 based on 2 ratings ? BiologyGCSEOCR Created by: Alison RussellCreated on: 11-01-13 09:24 Where is the Nucleus? Middle of the atom 1 of 13 What does the Nucleus contain? Protons and Neutrons 2 of 13 What charge does the Nucleus have? Positive charge 3 of 13 Where would you find electrons in an atom? In electron shells orbiting the nucleus 4 of 13 What does the volume of the electron's orbit determine? The size of the atom 5 of 13 Which particle has a mass of 1 and charge of +1? Proton 6 of 13 What is the mass and charge of an Electron? Mass -> 0.0005, Charge -> -1 7 of 13 What particle has a charge of 0 (neutral) and mass of 1? Neutron 8 of 13 Why does the number of protons = the number of electrons? The charge on the electrons is the same size as the charge on the protons, but opposite - so the charges will cancel out. 9 of 13 What does the MASS NUMBER of an atom mean? Total number of protons and neutrons. 10 of 13 What is the name of the number on an element for number of protons? (e.g bottom number on element on periodic table) The Atomic Number 11 of 13 mass number - atomic number = ? = number of neutrons 12 of 13 Another name for mass number? Relative atomic mass, Ar 13 of 13
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