Chemistry 130 Arizona college of
nursing midterm
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.
, Chemistry 130 Arizona college of
nursing midterm
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.
Atom - correct answer An atom is the smallest unit of ordinary matter that forms a chemical
element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms.
Mass number of an atom - correct answer A number equal to the sum of the number of
protons and neutrons in the nucleus of an atom. Symbolically it is represented by.
Mole - correct answer The number of particles (atoms or molecules) contained in a sample of
an element or compound with a mass in grams equal to the atomic or molecular weight,
respectively. Numerically, mol is equal to particles.
Period of the periodic table - correct answer A horizontal row of elements.
Group of the periodic table - correct answer A vertical column of elements that have similar
chemical properties; also called family of the periodic table.
Metals - correct answer Elements found in the left two-thirds of the periodic table. Most have
the following properties: high thermal and electrical conductivities, high malleability and
ductility, and a metallic luster.
Nonmetals - correct answer Elements found in the right one-third of the periodic table. They
often occur as brittle, powdery solids or gasses and have properties generally opposite those of
metals.
Metalloids - correct answer Elements that form a narrow diagonal band in the periodic table
between metals and nonmetals. They have properties somewhat between those of metals and
nonmetals.
Metallic property - correct answer Physical properties associated with metallic character
include metallic luster, shiny appearance, high density, high thermal conductivity, and high
electrical conductivity. Most metals are malleable and ductile and can be deformed without
breaking. Many metals are hard and dense.
Atomic radii - correct answer is a measure of the size of its atom, usually the mean or typical
distance from the center of the nucleus to the outermost isolated electron.
Ionization energy - correct answer ionization energy, ionization energy is the minimum energy
required to remove the most loosely bound electron of an isolated gaseous atom, positive ion,
or molecule.
nursing midterm
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.
, Chemistry 130 Arizona college of
nursing midterm
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.
Atom - correct answer An atom is the smallest unit of ordinary matter that forms a chemical
element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms.
Mass number of an atom - correct answer A number equal to the sum of the number of
protons and neutrons in the nucleus of an atom. Symbolically it is represented by.
Mole - correct answer The number of particles (atoms or molecules) contained in a sample of
an element or compound with a mass in grams equal to the atomic or molecular weight,
respectively. Numerically, mol is equal to particles.
Period of the periodic table - correct answer A horizontal row of elements.
Group of the periodic table - correct answer A vertical column of elements that have similar
chemical properties; also called family of the periodic table.
Metals - correct answer Elements found in the left two-thirds of the periodic table. Most have
the following properties: high thermal and electrical conductivities, high malleability and
ductility, and a metallic luster.
Nonmetals - correct answer Elements found in the right one-third of the periodic table. They
often occur as brittle, powdery solids or gasses and have properties generally opposite those of
metals.
Metalloids - correct answer Elements that form a narrow diagonal band in the periodic table
between metals and nonmetals. They have properties somewhat between those of metals and
nonmetals.
Metallic property - correct answer Physical properties associated with metallic character
include metallic luster, shiny appearance, high density, high thermal conductivity, and high
electrical conductivity. Most metals are malleable and ductile and can be deformed without
breaking. Many metals are hard and dense.
Atomic radii - correct answer is a measure of the size of its atom, usually the mean or typical
distance from the center of the nucleus to the outermost isolated electron.
Ionization energy - correct answer ionization energy, ionization energy is the minimum energy
required to remove the most loosely bound electron of an isolated gaseous atom, positive ion,
or molecule.
