Chemistry 130 Arizona college of nursing
midterm Exam COMPLETE (2025) TEST WITH
LATEST UPDATED (QUESTIONS AND ANSWERS)
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Terms in this set (114)
Matter Anything that has mass and occupies space.
Mass A measurement of the amount of matter in an object.
A measurement of the gravitational force acting on an
Weight
object.
Changes matter undergoes without changing
Physical changes
composition.
Properties of matter that can be observed or
Physical properties measured without trying to change the composition
of the matter being studied.
Changes matter undergoes that involve changes in
Chemical changes
composition.
Properties that matter demonstrates when attempts
Chemical properties
are made to change into new substances.
Length Meter
Volume Liter
Mass Grams
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, 20/06/2025, 14:22 Chemistry 130 Arizona college of nursing midterm Exam COMPLETE (2025) TEST WITH LATEST UPDATED (QUESTIONS AND …
A way of representing numbers consisting of a
product between a nonexponential number and
Scientific notation
raised to a whole-number exponent that may be
positive or negative.
The numbers in a measurement that represent the
Significant figures certainty of the measurement, plus one number
representing an estimate.
The number given when the mass of a sample of a
Density substance is divided by the volume of the same
sample.
The relative mass of a molecule expressed in atomic
Molecular weight mass units and calculated by adding together the
atomic weights of the atoms in the molecule.
a stable subatomic particle occurring in all atomic
Protons nuclei, with a positive electric charge equal in
magnitude to that of an electron, but of opposite sign.
a subatomic particle of about the same mass as a
Neutrons proton but without an electric charge, present in all
atomic nuclei except those of ordinary hydrogen.
a stable subatomic particle with a charge of negative
Electrons electricity, found in all atoms and acting as the
primary carrier of electricity in solids.
Atoms that have the same atomic number but
different mass numbers. That is, they are atoms of the
Isotopes
same element that contain different numbers of
neutrons in their nuclei.
An atom is the smallest unit of ordinary matter that
Atom forms a chemical element. Every solid, liquid, gas, and
plasma is composed of neutral or ionized atoms.
A number equal to the sum of the number of protons
Mass number of an atom and neutrons in the nucleus of an atom. Symbolically
it is represented by.
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