Your score on this part is determined solely by the marks on the Scantron sheet. Missing mark, unclear mark, or multiple marks will result in zero score for that question. Some questions do not have 5 choices. Neglect air resistance unless otherwise stated. All of these.
Molecules are the smallest units for chemical reactions.
An atom is the smallest indivisible particle known to date. All of the above. The position of the mass as a function of time is shown in the figure. As shown above, two wave pulses with the same amplitude and width are generated at either end of a long rope and travel toward each other. The medium in which a certain wave moves travels along with the wave itself.