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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.

The polymer used for the nonstick surface of cooking utensils is 24.0%c and 76%f by mass. what is the empirical formula of this polymer?

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoft en gain electrons easilygood conductorpoor conductorcan be liquidselements