Question

Name CHM121 E14 CLASSIFICATION OF CHEMICAL SUBSTANCES If substances are only classified as ionic, macromolecular, metallic, and molecular, in which, IF ANY, categories are ALL the members: 2) a) Soluble in water b) Electrical conductors when melted c) Insoluble in all common solvents d) Solids at room temperature Classify each substance below into one of the following seven categories: ionic, ionic with waters of hydration, ionic-molecular, ionic-molecular with 3) a) A white solid melts at 250°C without decomposing. The liquid melt doesn't conduct electricity. A white solid melts at 1000°C. The liquid melt doesn't conduct electricity. b) c) A solid conducts electricity and undergoes a color change to brownish-black when being heated in a flame-dried test tube. A solid doesn't conduct electricity and undergoes a color change to brownish-black when being heated in a flame-dried test tube. d)

Answer 1

Name CHM121 E14 CLASSIFICATION OF CHEMICAL SUBSTANCES If substances are only classified as ionic, macromolecular, metallic, and molecular, in which, IF ANY, categories are ALL the members: 2) a) Soluble in water b) Electrical conductors when melted c) Insoluble in all common solvents lonic lonic Metallic d) Solids at room temperature Classify each substance below into one of the following seven categories: ionic, ionic with waters of hydration, ionic-molecular, ionic-molecular with waters of hydration, metallic, macromolecular, or molecular. 3) A white solid melts at 250°C without decomposing. The liquid melt doesn't conduct electricity. a) molecular A white solid melts at 1000°C. The liquid melt doesn't conduct electricity. b) Macromolecular c) A solid conducts electricity and undergoes a color change to brownish-black when being heated in a flame-dried test tube. lonic-molecular with water of hydration A solid doesn't conduct electricity and undergoes a color change to brownish-black when being heated in a flame-dried test tube. d) Macromolecular or molecular