Clay and water make a
a. solution
b. suspension
c. colloid

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.

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

What is true for a substance that releases energy