Which Statement describes a controlled experiment? A. It includes two groups, neither of which is exposed to the factor being tested.
B. It includes a group exposed to one of factors being tested and a group that is exposed to another of the factors being tested.
C. It includes a group exposed to the factor being tested, and a group that is not exposed to the factor being tested.
D. It includes two groups, both of which are exposed to the factor being tested.

( Please hurry, im being timed!)

4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.