A box rests on the floor. Simon pushes horizontally on a box, but it does not move. The force that opposes motion is . A. inertia
B. friction
C. acceleration
D. faster
E. slower

Which best represents the law of conservation of mass ?

The discovery of the electron as a subatomic particle was a result of

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.