Chemistry 130 Arizona College Of Nursing
Midterm Exam Latest 2025-2026 With Complete
Questions and Correct Answers Graded A+
Matter - CORRECT ANSWER-Anything that has mass and occupies space.
Mass - CORRECT ANSWER-A measurement of the amount of matter in an object.
Weight - CORRECT ANSWER-A measurement of the gravitational force acting on an
object.
,Physical changes - CORRECT ANSWER-Changes matter undergoes without changing
composition.
Physical properties - CORRECT ANSWER-Properties of matter that can be observed or
measured without trying to change the composition of the matter being studied.
Chemical changes - CORRECT ANSWER-Changes matter undergoes that involve changes
in composition.
Chemical properties - CORRECT ANSWER-Properties that matter demonstrates when
attempts are made to change into new substances.
Length - CORRECT ANSWER-Meter
Volume - CORRECT ANSWER-Liter
Mass - CORRECT ANSWER-Grams
Scientific notation - CORRECT ANSWER-A way of representing numbers consisting of a
product between a nonexponential number and raised to a whole-number exponent that may
be positive or negative.
, Significant figures - CORRECT ANSWER-The numbers in a measurement that represent
the certainty of the measurement, plus one number representing an estimate.
Density - CORRECT ANSWER-The number given when the mass of a sample of a
substance is divided by the volume of the same sample.
Molecular weight - CORRECT ANSWER-The relative mass of a molecule expressed in
atomic mass units and calculated by adding together the atomic weights of the atoms in the
molecule.
Protons - CORRECT ANSWER-a stable subatomic particle occurring in all atomic nuclei,
with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
Neutrons - CORRECT ANSWER-a subatomic particle of about the same mass as a proton
but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Electrons - CORRECT ANSWER-a stable subatomic particle with a charge of negative
electricity, found in all atoms and acting as the primary carrier of electricity in solids.
Isotopes - CORRECT ANSWER-Atoms that have the same atomic number but different
mass numbers. That is, they are atoms of the same element that contain different numbers of
neutrons in their nuclei.
Midterm Exam Latest 2025-2026 With Complete
Questions and Correct Answers Graded A+
Matter - CORRECT ANSWER-Anything that has mass and occupies space.
Mass - CORRECT ANSWER-A measurement of the amount of matter in an object.
Weight - CORRECT ANSWER-A measurement of the gravitational force acting on an
object.
,Physical changes - CORRECT ANSWER-Changes matter undergoes without changing
composition.
Physical properties - CORRECT ANSWER-Properties of matter that can be observed or
measured without trying to change the composition of the matter being studied.
Chemical changes - CORRECT ANSWER-Changes matter undergoes that involve changes
in composition.
Chemical properties - CORRECT ANSWER-Properties that matter demonstrates when
attempts are made to change into new substances.
Length - CORRECT ANSWER-Meter
Volume - CORRECT ANSWER-Liter
Mass - CORRECT ANSWER-Grams
Scientific notation - CORRECT ANSWER-A way of representing numbers consisting of a
product between a nonexponential number and raised to a whole-number exponent that may
be positive or negative.
, Significant figures - CORRECT ANSWER-The numbers in a measurement that represent
the certainty of the measurement, plus one number representing an estimate.
Density - CORRECT ANSWER-The number given when the mass of a sample of a
substance is divided by the volume of the same sample.
Molecular weight - CORRECT ANSWER-The relative mass of a molecule expressed in
atomic mass units and calculated by adding together the atomic weights of the atoms in the
molecule.
Protons - CORRECT ANSWER-a stable subatomic particle occurring in all atomic nuclei,
with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
Neutrons - CORRECT ANSWER-a subatomic particle of about the same mass as a proton
but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Electrons - CORRECT ANSWER-a stable subatomic particle with a charge of negative
electricity, found in all atoms and acting as the primary carrier of electricity in solids.
Isotopes - CORRECT ANSWER-Atoms that have the same atomic number but different
mass numbers. That is, they are atoms of the same element that contain different numbers of
neutrons in their nuclei.
