What is an element? A. a chemical reaction

B. a pure substance made up of one type of atom

C. a combination of different types of atoms

D. the smallest particle of matter

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

The ammonia molecule in the diagram has the observed bond orientation because

If you are told to get 100 ml of stock solution to use to prepare smaller size sample for an experiment, which piece of glassware would you use?