Ions quiz Loading... 1. If an atom gains electrons what happens to its charge?becomes more positivebecomes more negativeremains the sameswitches its signQuestion 1 of 22 Loading... 2. What is needed to complete this diagram to show the ionic bonding in sodium chloride, NaCl ?1) eight electrons around the chloride (seven dots and one cross) 2) A charge of -1 on the sodium and +1 on the chloride1) seven electrons around the sodium 2) one electon around the chloride 3) A charge of +1 on the sodium and -1 on the chloride1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +1 on the sodium and -1 on the chloride1) seven electrons around the chloride 2) one electon around the sodium 3) A charge of +1 on the sodium and -1 on the chlorideQuestion 2 of 22 Loading... 3. If copper chloride has the formula CuCl₂, what is the formula of the copper ion?Cu⁺Cu²⁺Cu⁻Cu²⁻Question 3 of 22 Loading... 4. What is special about the elements in group 0?They have the same number of electronsThey are all diatomicThey are very unreactive (because they have full outer electron shells)They are all coloured gasesQuestion 4 of 22 Loading... 5. When are ions attracted to each other?When the ions are very smallWhen the ions have the same chargeWhen the ions are the same sizeWhen the ions are oppositely chargedQuestion 5 of 22 Loading... 6. Explain, in terms of the arrangement of electrons in its atoms, why neon is very unreactiveNeon has an even number of electrons so it does not need to form bondsNeon has 8 electrons in the outer shell, so it is full. Therefore it does not easily gain or lose electronsNeon is a noble gasNeon has the same number of electrons and protons so it is unreactiveQuestion 6 of 22 Loading... 7. On the Periodic Table what is the meaning of the word Period? What does that tell us about the electron configuration of the atom?same number of electrons in the outer shellSame electronic configurationsame number of electron shellsSame number of electrons in the inner shellQuestion 7 of 22 Loading... 8. Explain why magnesium oxide has a higher melting point than sodium chloride.Mg²⁺ and O²⁻ ions are larger than sodium and chloride therefore the electrostatic forces between the ions are much stronger. This requires more energy to break.Magnesium and oxygen are more reactive elementsSodium chloride is a simple molecular substance so there are only weak intermolecular forces which require little energy to breakMg²⁺ and O²⁻ ions have a higher charge than sodium and chloride therefore the electrostatic forces between the ions are much stronger. This requires more energy to break.Question 8 of 22 Loading... 9. What is the formula for potassium sulfate?K₂SO₄K₃S₂K(SO₄)₂K₂SQuestion 9 of 22 Loading... 10. What is the formula of the calcium ion?Ca²⁻Ca¹⁻Ca²⁺Ca¹⁺Question 10 of 22 Loading... 11. Explain, in terms of electrons, why isotopes have the same chemical propertiesIsotopes are radioactiveIsotopes have the same number of electronsIsotopes have different massesIsotopes have the same number of protons but a different number of neutronsQuestion 11 of 22 Loading... 12. How many electrons in the outer shell of group 2 elements?3210Question 12 of 22 Loading... 13. State the formula for the iron (II) ionFe²⁺Fe²⁻Fe⁻Fe⁺Question 13 of 22 Loading... 14. Why do elements in the same group of the periodic table have similar chemical properties?Elements in the same group of the periodic table have the same number of electrons in their outer shellElements in the same group of the periodic table are all the same type of element (metal, non-metal etc.)Elements in the same group of the periodic table have the same number of protonsElements in the same group of the periodic table have different numbers of electrons in their outer shellQuestion 14 of 22 Loading... 15. On the Periodic table what is the meaning of the word Group? What does that tell us about the electron configuration of the atom?Same number of electron shellssame number of electrons in the outer shellSame electronic configurationSame number of electrons in the inner shellQuestion 15 of 22 Loading... 16. How can atoms get a full outer shell?Either the transfer (ionic) or sharing (covalent) of electronsEither the transfer (covalent) or sharing (ionic) of electronsOnly transfer (ionic) of electronsConversion of electrons to protonsQuestion 16 of 22 Loading... 17. How many electrons in the outer shell of group 1 elements?3102Question 17 of 22 Loading... 18. Explain the term ionic bondAn ionic bond is the strong electrostatic attraction between similarly charged ionsAn ionic bond is the strong magnetic attraction between oppositely charged ionsAn ionic bond is the strong electrostatic attraction between oppositely charged ionsAn ionic bond is the strong electrostatic attraction between a shared pair of electrons and two nucleiQuestion 18 of 22 Loading... 19. What do each of the following state symbols represent: (s), (l), (g), (aq)(s) - solid. (l) - liquid. (g) - gas. (aq) - aqueous (in solution)(s) - solution. (l) - liquid. (g) - gas. (aq) - water(l) - solid. (g) - liquid. (s) - gas. (aq) - aqueous (in solution)(s) - solid. (l) - liquid. (g) - gas. (aq) - waterQuestion 19 of 22 Loading... 20. Balance the equation for the reaction: ___ HCl(aq) + ___ MnO₂(s) → ___MnCl₂(aq) + ___H₂O(l) + ___ Cl₂(g)2 HCl(aq) + MnO₂(s) → MnCl₂(aq) + H₂O(l) + Cl₂(g)4 HCl(aq) + MnO₂(s) → MnCl₂(aq) + 2H₂O(l) + Cl₂(g)4 HCl(aq) + 2 MnO₂(s) → 2 MnCl₂(aq) + 2H₂O(l) + Cl₂(g)6 HCl(aq) + MnO₂(s) → MnCl₂(aq) + 2H₂O(l) + 2 Cl₂(g)Question 20 of 22 Loading... 21. Why do ionic substance have high melting and boiling points?There is a strong electrostatic attraction between similarly charged ions, in a giant structure, which requires a lot of energy to overcomeThere is a weak electrostatic attraction between oppositely charged ions, in a giant structure, which requires little energy to overcomeThere is a strong electrostatic attraction between oppositely charged ions, in a giant structure, which requires a lot of energy to overcomeThere are weak intermolecular forces, in a simple molecular structure, which require little energy to overcomeQuestion 21 of 22 Loading... 22. What is the formula for copper (II) fluorideCuF₂Cu₂F₂CuFCu₂FQuestion 22 of 22 Loading... 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