Sodium metal, chlorine gas, and sodium chloride have different properties. What conclusion can you make about the forces holding the atoms of these substances together? What tests could you run to learn more about each substance?

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.