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Chemistry 130 Arizona college of nursing midterm Exam | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions $13.48   Add to cart

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Chemistry 130 Arizona college of nursing midterm Exam | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

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Chemistry 130 Arizona college of nursing midterm Exam | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

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  • August 7, 2024
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  • Chemistry 130
  • Chemistry 130
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Chemistry 130 Arizona college of nursing midterm Exam | Questions & Answers (100
%Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With
Expert Solutions


Matter - Anything that has mass and occupies space.



Mass - A measurement of the amount of matter in an object.



Weight - A measurement of the gravitational force acting on an object.



Physical changes - Changes matter undergoes without changing composition.



Physical properties - Properties of matter that can be observed or measured without trying to change
the composition of the matter being studied.



Chemical changes - Changes matter undergoes that involve changes in composition.



Chemical properties - Properties that matter demonstrates when attempts are made to change into new
substances.



Length - Meter



Volume - Liter



Mass - Grams



Scientific notation - 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 - The numbers in a measurement that represent the certainty of the measurement,
plus one number representing an estimate.

, Density - The number given when the mass of a sample of a substance is divided by the volume of the
same sample.



Molecular weight - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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 - A horizontal row of elements.



Group of the periodic table - A vertical column of elements that have similar chemical properties; also
called family of the periodic table.

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