C1 1.2 0.0 / 5 ? ChemistryAtomsGCSEAQA Created by: ex-JohnsonfamilyCreated on: 29-03-15 20:07 What is in the middle of an atom? A nucleus. 1 of 19 Which two types of particles does the nucleus contain? Protons and Neutrons. 2 of 19 Which third type of particle orbits the nucleus? Electron. 3 of 19 Any atom has the same number of electrons orbiting its nucleus as it has... ...Protons in the nucleus. 4 of 19 What is the relative charge of a proton? +1 5 of 19 What is the relative charge of a neutron? 0 6 of 19 What is the relative charge of an electron? -1 7 of 19 Why do the positive charges of a proton and the negative charges of an electron cancel out? Because atoms have the same number of protons and electrons. 8 of 19 If a carbon atom has 6 protons, how many electrons does it have? 6. 9 of 19 What is an atomic number? The amount of protons in the nucleus of an atom. 10 of 19 What is the atomic number of Beryllium? 4. 11 of 19 What is the atomic number of Aluminium? 13. 12 of 19 What is the atomic number of Oxygen? 8. 13 of 19 What is the atomic number of Carbon? 6. 14 of 19 What is the atomic number of Silicon? 14. 15 of 19 What is the mass number? The number of protons plus neutrons. 16 of 19 If an atom has 4 protons and 5 neutrons, what will it's mass number be? 9. 17 of 19 Argon has a mass number of 40 and an atomic number of 18, how many neutrons does it have? 22. 18 of 19 What is the equation for number of neutrons? Number of Neutrons = Mass number - Atomic Number 19 of 19
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