Type in the name of the following compounds. Be sure to use the periodic table if needed.

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

What are the first three quantum numbers for the electrons located in subshell 2s?