Fill in the blanks. Elements found in the first two columns of the periodic table contain outer electron shells that are _______; these elements tend to form _______ in solution.

Which of the following characteristics of living systems provides the best evidence of the common ancestry of all life?

If solution X has a pH of 3 and solution Y has a pH of 5, which of the following statements best describes the relationship between solutions X and Y?

Name and give examples of at least three characteristics of life covered in the lecture/textbook. 

If the diagrams below represent the electron configurations of the third electron shell in the elements V, W, X, Y, and Z, which of the elements would exhibit a chemical behavior most similar to oxygen?

Which statement below best describes why rubbing an alcohol swab on the skin feels cool?

I confirm that I: took an adequate Workplace Scan. I followed all instructions fully. I am aware that I need to take a good, clear room scan/workplace check during the setup for EACH test this term. I am aware that failure to do so will result in a deduction of points and may result in a 0 for a test.

Organic compounds are made of the element:

What is found in the nucleus of an atom.

The thick protein found in hair, skin, and nails is called: