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.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller VasilyKichigin. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.48. You're not tied to anything after your purchase.
