AFOQT Physical Science questions with correct answers

The lowest possible temperature Correct Answer-Absolut Zero The pressure exerted by the gases in the air. units of measurement are kilopascals, atmospheres, millimeters of mercury, and Torr Correct Answer-atmospheric Pressure Pressure is 100 kPa, 1atm, 760 mm Hg or 760 Torr Correct Answer-standard atmospheric pressure the smallest particle of an element a nucleus and its surrounding electrons. Correct Answer-Atom the mass of an atom measured in atomic mass units (amu). an atomic mass unit is equal to one-twelfth of the atom of carbon-12. atomic mass is now more generally used instead of atomic weight. Example: the atomic mass of chlorine is about 35amu. Correct Answer-atomic mass also known as proton number, it is the number of electrons or the number of protons in an atom. example: the atomic number of gold is 79. Correct Answer-atomic number