APHY 201 COMPREHENSIVE TEST SCRIPT 2026 FULL QUESTIONS AND CORRECT ANSWERS GRADED A+

APHY 201 COMPREHENSIVE TEST SCRIPT
2026 FULL QUESTIONS AND CORRECT
ANSWERS GRADED A+

●● matter.
Answer: Anything that occupies space and has mass; the physical
material of the universe


●● element.
Answer: a pure substance that cannot be created or broken down by
ordinary chemical means


●● most abundant elements in humans.
Answer: oxygen (O), carbon (C), hydrogen (H), nitrogen (N)


●● compound.
Answer: substance composed of two or more elements joined by
chemical bonds


●● proton.
Answer: A subatomic particle that has a positive charge and that is found
in the nucleus of an atom

, ●● neutron.
Answer: A subatomic particle that has no charge and that is found in the
nucleus of an atom


●● electron.
Answer: A subatomic particle that has a negative charge and found
outside the nucleus


●● nucleus.
Answer: center of an atom, contains protons and neutrons


●● atomic number.
Answer: the number of protons in the nucleus of an atom, which
determines the chemical properties of an element and its place in the
periodic table


●● valence electrons.
Answer: The electrons in the outermost shell (main energy level) of an
atom; these are the electrons involved in forming bonds.


●● bond.
Answer: a weak or strong electrical attraction that holds atoms in the
same vicinity