AFOQT Physical Science Question and answers rated A+ 2023

AFOQT Physical Science QueAbsolute zero - correct answer the lowest possible temperature (-273.15 degrees Celsius) Atmospheric pressure - correct answer The pressure exerted by the gases in the air. Units of measurement are kilopascals (kPa), atmospheres (atm), millimeters of mercury (mm Hg) and Torr. Standard atmospheric pressure is 100 kPa, 1 atm, 760 mm Hg or 760 Torr. Atom - correct answer The smallest particle of an element; a nucleus and its surrounding electrons. Atomic mass - correct answer 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 weight of cholrine is about 35 g/mol. Atomic number - correct answer 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 stion and answers rated A+ 2023