Which of the following are properties of ionic compounds?Low melting and boiling points, do not dissolve in waterHigh melting and boiling points, dissolve in waterLow melting and boiling points, dissolve in waterHigh melting and boiling points, do not dissolve in water2Ionic compounds can:Conduct electricity when solid but not liquidThey cannot conduct electricity when liquid or solidConduct electricity when both solid and liquidConduct electricity when liquid but not solid3The atoms in simple molecular structures are held together by which type of bonds?CovalentIonicIonic and covalentMetallic4Simple molecular structures have:Weak molecular bonds and strong intermolecular bondsStrong molecular bonds and weak intermolecular bondsStrong molecular bonds and strong intermolecular bondsWeak molecular bonds and weak intermolecular bonds5Giant structures can be formed from millions of atoms held together by:Metallic bondsCovalent bondsIonic bondsIonic, covalent or metallic bonds6Graphite is the only giant covalent structure that:Dissolves in waterHas a high melting pointIs a form of carbonConducts electricity