Before using any chemical in the lab, why should one first read the material safety data sheet (msds)? this is important for laboratory safety. the msds tells where to purchase chemicals. the msds provides the chemical formulas. this is important for analyzing experiments.

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Talking listening and reacting non verbally are all part of communicating

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?