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6 Written questions

6 Multiple choice questions

  1. States that atoms like hydrogen and helium only need two valence electrons to be stable
  2. an ion made up of two or more atoms bonded together that acts as a single unit with a net charge
  3. an element that can make bonds with more than 8 electrons, able to do so because they all have empty d orbitals
  4. a type of bond that forms when electrons are not shared equally
  5. the attraction of a metallic cation for delocalized electrons
  6. forms when two or more atoms covalently bond; usually includes two or more nonmetals

6 True/False questions

  1. formula unitthe simplest ratio of ions represented in an ionic compound


  2. ionic bondthe electrostatic force that holds oppositely charged particles together; usually a nonmetal paired with a metal


  3. alloya mixture of elements that has metallic properties


  4. endothermica chemical reaction in which more energy is released that is required to break bonds in the initial reaction


  5. octet ruleStates that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons


  6. exothermicchemical reaction in which a greater amount of energy is required to break the existing bonds in reactants than is released when the new bonds form in product molecules