Basic Chemistry and Biochemistry Unit Review Exam Questions & Answers (Grade A+).docx

Basic Chemistry and Biochemistry Unit
Review Exam Questions & Answers
(Grade A+)
Element -
correct answer ✅A substance that cannot be broken down into
other substances by ordinary chemical means is (an)...


Compound -
correct answer ✅A substance formed by the chemical
combinations of two of more elements is a(n)...


Atom -
correct answer ✅The basic unit of all elements is the...


Protons; Neutrons; Electrons -
correct answer ✅Atoms are made up of three particles: ..., ...,
and ...


Nucleus -
correct answer ✅The dense central portion of the atom is the...


Atomic Number -
correct answer ✅The number of protons in the nucleus of an atom
is the...of the element

, Basic Chemistry and Biochemistry Unit
Review Exam Questions & Answers
(Grade A+)

Mass Number -
correct answer ✅The number of protons plus the number of
neutrons in the nucleus of an atoms is its...


Isotope -
correct answer ✅Different varieties of the same elements having
different numbers on neutrons in their nuclei are called...


Ionic Bonding -
correct answer ✅Chemical bonding in which there is a transfer of
electrons from one atom to another is a(n)...


Covalent Bonding -
correct answer ✅Chemical bonding in which there is a sharing of
electrons between atoms is a(n)


pH -
correct answer ✅Measurement of the hydrogen ion concentration
of a solution may be given in terms of...