COMPREHENSIVE EXAMINATION TEST 2026
QUESTIONS AND SOLUTIONS
● Halved. Answer: A gas is at standard temperature and pressure. If the
volume is doubles and the temperature is held constant, the pressure of
the gas is _____________.
● Dalton. Answer: 1803, Resurrected Democritus' atomic theory,
proposing that all matter is composed of tiny atoms, indestructible
particles that combine in different ways to make up recognizable
elements.
● JJ Thompson. Answer: 1904, explains the existence of electrons. Gold
Foil Experiment.
● Rutherford Model. Answer: 1911,positively charged nucleus
containing most of the atom's mass, with orbiting electrons
● Bohr. Answer: 1913, Multiple electron orbits (rings) sustained by
electrostatic forces
, ● Democritus. Answer: 400 BC "Indivisibles," minute and indestructible
particles, whose many shapes and forms constitute the different states of
matter.
● Shrodinger. Answer: 1926, Electrons exist as probability clouds rather
than orbiting
● Right Side. Answer: Where would you find a diatomic molecule that is
not hydrogen?
● Diatomic Molecules. Answer: Examples are hydrogen (H2), nitrogen
(N2) and oxygen (O2), and the halogens fluorine (F2), chlorine (Cl2),
bromine (Br2) and iodine (I2)
● Newton's First Law of Motion. Answer: Law of Inertia, ie a hockey
puck gliding across the ice until friction stops it
● Newton's Second Law of Motion. Answer: Acceleration is produced
when a force acts on a mass. SIMPLY: Pushing or pulling an object
produces acceleration, a change in the speed of motion.
● Newton's Third Law of Motion. Answer: For every action there is an
equal and opposite re-action. SIMPLY: If you push an object, that object
pushes back in the opposite direction equally hard