Atomic Structure - unit 1 0.0 / 5 ? ChemistryAtomic StructureASAQA Created by: EmilyCreated on: 14-02-14 11:15 What is the relative mass and relative charge of a Proton? Relative mass = 1 Relative charge = +1 1 of 12 What is the relative mass and relative charge of a Neutron? Relative mass = 1 Relative charge = 0 2 of 12 What is the relative mass and relative charge of an Electron? Relative mass = 1/1840 Relative charge = -1 3 of 12 What particles are found in the nucleus and what can these be called? Protons and Neutrons are found in the nucleus, and can sometimes be called nucleons. 4 of 12 What is the definition of the Atomic number? Atomic number = number of protons 5 of 12 What is the definition of the Mass number? Mass number = number of protons + number of neutrons. 6 of 12 What are isotopes? Atoms with the same number of protons but different numbers of neutrons. 7 of 12 What is the Relative atomic mass? Ar=average mass of an atom÷1/12th mass of 1 atom of ¹²C 8 of 12 What is the Relative formula mass? Mr=average mass of an entity÷1/12th mass of 1 atom of ¹²C 9 of 12 What is the Relative molecular mass? Mr=average mass of a molecule÷1/12th mass of 1 atom of ¹²C 10 of 12 What are the four key stages to the mass spectrometer? 1) ionisation, 2) acceleration, 3) deflection, 4) detection. 11 of 12 What is the definition of ionisation energy? The energy required to remove a mole of electrons from a mole of atoms in the gaseous state. 12 of 12
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