Chemistry Exam | Allied Health UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Chemistry - CORRECT ANSWER - science that deals with the composition and
properties of matter
Matter - CORRECT ANSWER - anything that takes up space
Elements - CORRECT ANSWER - unique substances that make up all matter
of the 92 elements how many are found in living organisms - CORRECT ANSWER - 26
Atoms - CORRECT ANSWER - smallest subunits of elements
-smallest complete units of matter
They cannot be broken down or changed into another form by chemical or physical means
What makes up the atom's weight - CORRECT ANSWER - protons and neutrons
Electrons - CORRECT ANSWER - found in orbit around the nucleus
-nearly weightless, negatively charged
-these determine how or if the atom will react chemically
Atomic number - CORRECT ANSWER - equal to the number of protons in the nucleus
Energy levels - CORRECT ANSWER - an atom's electrons orbit at specific distances from
the nucleus
, The first energy level closest to nucleus - CORRECT ANSWER - holds 2
then 8
electrons in the energy level farthest away from the nucleus says - CORRECT ANSWER -
how the atom will react chemically
If an atom's outermost energy level has fewer than four electrons, - CORRECT
ANSWER - the atom typically loses those electrons to empty the level
Valence - CORRECT ANSWER - the number of bonds an atom needs to form in order to
stabilize its outermost energy level
-aka number of electrons gained, shared, or lost by atoms of element
Ionic bond - CORRECT ANSWER - when electrons are transferred from one atom to
another
Ion - CORRECT ANSWER - an atom or group or atoms that has acquired a pos. or neg.
charge
cation - CORRECT ANSWER - A positively charged ion
anion - CORRECT ANSWER - A negatively charged ion
Attraction between oppositely charged ions forms - CORRECT ANSWER - an ionic bond
-NaCl and other ionically bonded substances tend to form crystals when solid and to dissolve
easily in water
Electrolytes - CORRECT ANSWER - when ionically bonded substances dissolve in water,
the atoms separate as ions
-compounds that release ions when they dissolve in water are these
ACTUAL Exam Questions and CORRECT
Answers
Chemistry - CORRECT ANSWER - science that deals with the composition and
properties of matter
Matter - CORRECT ANSWER - anything that takes up space
Elements - CORRECT ANSWER - unique substances that make up all matter
of the 92 elements how many are found in living organisms - CORRECT ANSWER - 26
Atoms - CORRECT ANSWER - smallest subunits of elements
-smallest complete units of matter
They cannot be broken down or changed into another form by chemical or physical means
What makes up the atom's weight - CORRECT ANSWER - protons and neutrons
Electrons - CORRECT ANSWER - found in orbit around the nucleus
-nearly weightless, negatively charged
-these determine how or if the atom will react chemically
Atomic number - CORRECT ANSWER - equal to the number of protons in the nucleus
Energy levels - CORRECT ANSWER - an atom's electrons orbit at specific distances from
the nucleus
, The first energy level closest to nucleus - CORRECT ANSWER - holds 2
then 8
electrons in the energy level farthest away from the nucleus says - CORRECT ANSWER -
how the atom will react chemically
If an atom's outermost energy level has fewer than four electrons, - CORRECT
ANSWER - the atom typically loses those electrons to empty the level
Valence - CORRECT ANSWER - the number of bonds an atom needs to form in order to
stabilize its outermost energy level
-aka number of electrons gained, shared, or lost by atoms of element
Ionic bond - CORRECT ANSWER - when electrons are transferred from one atom to
another
Ion - CORRECT ANSWER - an atom or group or atoms that has acquired a pos. or neg.
charge
cation - CORRECT ANSWER - A positively charged ion
anion - CORRECT ANSWER - A negatively charged ion
Attraction between oppositely charged ions forms - CORRECT ANSWER - an ionic bond
-NaCl and other ionically bonded substances tend to form crystals when solid and to dissolve
easily in water
Electrolytes - CORRECT ANSWER - when ionically bonded substances dissolve in water,
the atoms separate as ions
-compounds that release ions when they dissolve in water are these
