Calcium has ________ valence electron(s).

Sulfur atoms are larger than than ________ atoms.

Which of the following would NOT be a physical change?

A p orbital has ________ lobes.

In the following list, which is the polar molecule?

Chromium is an example of an element that is a ________.

The symbol of the element in Period 3 and Group 2A(2) is ________.

Identify the chemical change in the following list.

Give the name for NaNO3.

Follow-up questions for a positive finding in an elder abuse and neglect screening tool includes: (Select all that apply)