Physical Science Survey II – NEMCC (Northeast Mississippi
Community College) – Midterm Exam Questions with
Verified Answers (Instructor: Dewitt)
_______ introduced the quantized energy idea. - VERIFIED ANSWER -
Planck
_______ studied oil droplets in an electric field and found multiples of
the electron charge and thereby gave the electron mass. - VERIFIED
ANSWER - Millikan
________ formulated an atomic theory using a model of electrons
embedded in a blob of positively charged matter like raisins in plum
pudding. - VERIFIED ANSWER – Thomson
________ formulated an atomic theory using a model of electrons
embedded in a blob of positively charged matter like raisins in plum
pudding. - VERIFIED ANSWER - Thomson
________ reintroduced the atomic theory in the early 1800's to explain
chemical reactions. - VERIFIED ANSWER – Dalton
__________ are atoms with the same atomic number but different
numbers of neutrons. - VERIFIED ANSWER – isotopes
,_________ have the same number of protons and are identified as the
same element name but have different numbers of neutrons and
therefore different masses. - VERIFIED ANSWER - isotopes
Determine the percent by mass of Carbon in Glucose (C6H12O6). -
VERIFIED ANSWER - 40%
_____________ fluids can mix in any proportions without separating. -
VERIFIED ANSWER - miscible
___________ are responsible for the chemical properties of organic
compounds. - VERIFIED ANSWER - functional groups
The _____ bond type is formed when outer electrons move freely
throughout. - VERIFIED ANSWER - metallic
The smallest particle retaining the characteristic chemical properties
of a substance is the - VERIFIED ANSWER - molecule
,The _____ bond type is formed when electrons are transferred
between two atoms. - VERIFIED ANSWER - ionic
The smallest elemental unit is the - VERIFIED ANSWER - atom
What evidence must exist to show that an ion exchange reaction has
occurred? - VERIFIED ANSWER - All of the answers are correct
Hot and cold glassware - VERIFIED ANSWER - look exactly the same
Which of the following should not be used when handling broken glass?
- VERIFIED ANSWER - bare hands
All of the following must be avoided except - VERIFIED ANSWER -
notifying the teacher in the event of an emergency
Students should only obtain materials provided in the lab for a
particular experiment. - VERIFIED ANSWER - true
Group IIA elements are called ___________. - VERIFIED ANSWER -
alkaline earth metals
, The _______ is the atomic mass of an element averaged over naturally
occurring isotopes. - VERIFIED ANSWER - atomic weight
A measure of an atom's ability to attract electrons is ___________. -
VERIFIED ANSWER - electronegativity
NH4C2H3O2 is named ________. - VERIFIED ANSWER - ammonium
acetate
_________ is the loss of electrons. - VERIFIED ANSWER - oxidation
A molecular compound may be identified by which
property/properties? - VERIFIED ANSWER - All of the answers are
correct.
A(n) ______ formula represents the arrangement of atoms within a
molecule. - VERIFIED ANSWER - structural
What is the formula weight of sodium fluoride? - VERIFIED ANSWER - -
41.99 u
Community College) – Midterm Exam Questions with
Verified Answers (Instructor: Dewitt)
_______ introduced the quantized energy idea. - VERIFIED ANSWER -
Planck
_______ studied oil droplets in an electric field and found multiples of
the electron charge and thereby gave the electron mass. - VERIFIED
ANSWER - Millikan
________ formulated an atomic theory using a model of electrons
embedded in a blob of positively charged matter like raisins in plum
pudding. - VERIFIED ANSWER – Thomson
________ formulated an atomic theory using a model of electrons
embedded in a blob of positively charged matter like raisins in plum
pudding. - VERIFIED ANSWER - Thomson
________ reintroduced the atomic theory in the early 1800's to explain
chemical reactions. - VERIFIED ANSWER – Dalton
__________ are atoms with the same atomic number but different
numbers of neutrons. - VERIFIED ANSWER – isotopes
,_________ have the same number of protons and are identified as the
same element name but have different numbers of neutrons and
therefore different masses. - VERIFIED ANSWER - isotopes
Determine the percent by mass of Carbon in Glucose (C6H12O6). -
VERIFIED ANSWER - 40%
_____________ fluids can mix in any proportions without separating. -
VERIFIED ANSWER - miscible
___________ are responsible for the chemical properties of organic
compounds. - VERIFIED ANSWER - functional groups
The _____ bond type is formed when outer electrons move freely
throughout. - VERIFIED ANSWER - metallic
The smallest particle retaining the characteristic chemical properties
of a substance is the - VERIFIED ANSWER - molecule
,The _____ bond type is formed when electrons are transferred
between two atoms. - VERIFIED ANSWER - ionic
The smallest elemental unit is the - VERIFIED ANSWER - atom
What evidence must exist to show that an ion exchange reaction has
occurred? - VERIFIED ANSWER - All of the answers are correct
Hot and cold glassware - VERIFIED ANSWER - look exactly the same
Which of the following should not be used when handling broken glass?
- VERIFIED ANSWER - bare hands
All of the following must be avoided except - VERIFIED ANSWER -
notifying the teacher in the event of an emergency
Students should only obtain materials provided in the lab for a
particular experiment. - VERIFIED ANSWER - true
Group IIA elements are called ___________. - VERIFIED ANSWER -
alkaline earth metals
, The _______ is the atomic mass of an element averaged over naturally
occurring isotopes. - VERIFIED ANSWER - atomic weight
A measure of an atom's ability to attract electrons is ___________. -
VERIFIED ANSWER - electronegativity
NH4C2H3O2 is named ________. - VERIFIED ANSWER - ammonium
acetate
_________ is the loss of electrons. - VERIFIED ANSWER - oxidation
A molecular compound may be identified by which
property/properties? - VERIFIED ANSWER - All of the answers are
correct.
A(n) ______ formula represents the arrangement of atoms within a
molecule. - VERIFIED ANSWER - structural
What is the formula weight of sodium fluoride? - VERIFIED ANSWER - -
41.99 u
