Atomic Structure Quiz 3.0 / 5 based on 1 rating ? ChemistryBonding & shapesASAQA Created by: Some like it hotCreated on: 21-10-12 15:16 Which two particles are in the nucleus? protons & neutrons 1 of 21 Which particle has a positive charge? proton 2 of 21 Which particle has a negative charge? electron 3 of 21 Which particle has a neutral charge? neutron 4 of 21 Which electron shell fills first? The one closest to the nucleus 5 of 21 What is the atomic number? the number of protons 6 of 21 What is the mass number? proton number + neutron number 7 of 21 What are Isotopes? same number of protons, different number of neutrons 8 of 21 Different Isotopes in chemistry act: In exactly the same way. 9 of 21 Why do Isotopes vary in mass number? because they have a different number of neutrons 10 of 21 Why do different isotopes act the way they do? They have the same number of electrons 11 of 21 There is a tiny fixed proportion of carbon......in all living matter. 14 12 of 21 What is the half life of the carbon used to date matter? 5730 13 of 21 What does a mass spectrometer do? determines the mass of separate atoms. 14 of 21 Why is the instrument kept under high vacuum? So that the air particles do not collide with ions. 15 of 21 What state is the sample injected into the mass spectrometer? gas 16 of 21 What is the first stage of mass spectroscopy? ionisation 17 of 21 What is the second stage of mass spectroscopy? acceleration 18 of 21 What is the third stage of mass spectroscopy? deflection 19 of 21 What is the final stage of mass spectroscopy? detection 20 of 21 describe ionisation. a beam of electrons from an electron gun knocks out electrons so that they form positive ions. 21 of 21
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