Atomic Structure 0.0 / 5 ? ChemistryAtomic StructureASAQA Created by: racheonCreated on: 28-01-14 18:33 What do protons and neutrons make up? The nucleus (at the centre of the atom). 1 of 18 What do electrons orbit? The nucleus (in shells). 2 of 18 How big is the nucleus? Tiny. 3 of 18 Tell me 2 things about the nucleus. It is dense and makes up almost all of the mass. 4 of 18 What is most of the atom made up of? Empty space. 5 of 18 What is the relative mass and relative charge of a proton, neutron and electron? Proton: 1, +1. Neutron: 1, 0. Electron: 1/2000, -1. 6 of 18 An atom has the same number of protons as what, thus making it? Electrons, making it neutral. 7 of 18 Define isotope. Atoms of the same element with different numbers of neutrons. 8 of 18 Define atomic number. The number of protons in the nucleus. 9 of 18 Define mass number. The number of protons and neutrons in the nucleus. 10 of 18 What 2 different and 1 similar things do isotopes of the same element have? Different masses and numbers of neutrons, same number of protons and electrons 11 of 18 The 3 isotopes of carbon are c12, c13 and c14. They have the same atomic number of 6. How many neutrons does each have? c12 - 6. c13 - 7. c14 - 8. 12 of 18 Why do different isotopes of the same element react in the same way? (2) Reactions involve electrons and neutrons make no difference to reactivity. 13 of 18 Define ion. A positively or negatively charged atom or a covalently bonded molecular ion. 14 of 18 What makes an ion charged? The have different numbers of protons and electrons. 15 of 18 Na+ has a mass number of 23 and an atomic number of 11. How many electrons does it have? 10. 16 of 18 Cl- has a mass number of 35 and an atomic number of 17. How many electrons does it have? 18. 17 of 18 What should you ONLY change when working out ions? The number of electrons. 18 of 18
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