A large crystal of potassium manganate was placed in the bottom of a beaker of cold water and left for several hours describe what would be seen after several hours

State the formula for density in words and mathematical symbols

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

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.