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- Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about ? On this page you'll find 11 study documents about .
atom
is the basic unit of matter. They are also known as elements
number of protons
in an atom determines its identity (which element it is). atomic number
mass number
is determined by adding the number of protons and the number of neutrons.
charge of an atom
is determined by the numbers of protons and electrons.
Isotopes
atoms of the same element that have different numbers of neutrons and, therefore, different masses.
Electron
negative charge
Pro...
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Exam (elaborations)
ATI TEAS Science chemistry.
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16
September 2023
2023/2024
A+
anything that has mass and takes up space
-all matter is composed of atoms
-has 4 states caused by differences in distances/angles btwn molecules/atoms, which results in diff bonding energy
-states can be traversed by addition/removal of heat
-ex: solid to liquid: enough heat to traverse latent heat of fusion of solid
-ex: liquid to gas: enough heat to traverse latent heat of vaporization of liquid
matter
-structures are rigid or nearly rigid and have strong bonds
-definite volume ...
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TEAS Science - Chemistry
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3
September 2023
2023/2024
A+
Matter
Anything that takes up space and has mass
Mass
Quantity of matter an object has
Elements
Substances that cannot be broken into simper types of matter
Atom
Smallest part of an element that still retains all the original properties of the element
Atom
Includes:
- Protons
- Electrons
- Neutrons
Protons
- Positively charged subatomic particle
- Found in the nucleus of an atom
- Number distinguishes one atom from another
Neutrons
- Neutral ...
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Exam (elaborations)
TEAS 7 Chemistry Physical Properties, States of Matter, and Water
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9
September 2023
2023/2024
A+
Kinetic Molecular Theory
Theory that all matter is composed of particles (atoms and molecules) moving constantly in random directions.
Molecule motion changes as is heat added or removed.
What does the phase of a substance depend on?
1. Temperature
2. Pressure
Mass
Amount of matter in an object, the number of molecules
Volume
Amount of space occupied by a specific number of molecules
3 states of matter
1. Solid
2. Liquid
3. Gas
Solid
1. Fixed shape and...
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Exam (elaborations)
Chemistry TEAS 2022.
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3
September 2023
2023/2024
A+
what is the atomic number?
number of protons
what are isotopes?
atoms with the same atomic number but different masses and different number of neutrons
how do you find number of electrons an atom has?
by the number of protons it has no charge,if it has a charge determine it by
(-) = add electron
(+) = subtract electron
how do you find number of neutrons?
atomic mass - protons
Covalent bonding?
a. metal and metal
b. nonmetal and nonmetal
c. nonmetal and metal
...
Cohesion
Cohesion is the tendency of particles of the same kind to stick to each other and is an important property to consider when looking at states of matter.
This image describes the various phase changes and how it either absorbs or releases energy.
Please see chart.
TEAs 7 Online Course
www.SmartEditionA
What phase changes require energy to be added to the system because the substance has more energy at the end of the phase change?
The phase changes are melting, vapo...
anion
a negatively charged ion
atom
the most basic complete unit of an element
cation
a positively charged ion
covalent bond
a chemical bond in which electron pairs are shared between atoms
electron
a negatively charged atomic particle
group
a column of elements in the periodic table
ion
a positively or negatively charged atom or molecule
ionic bond
the bond between two oppositely charged ions
neutron
an atomic particle with no ele...
The smallest component of an element having the chemical properties of the element.
Atom
The atom is further made of smaller particles named as subatomic or ultimate particles. The atom has been split by physicists mainly into three subatomic particles namely ____, ____, and ____.
protons, neutrons, and electrons
A ___ carries a positive charge.
It is placed in the nucleus of an atom and has mass nearly equal to 1 a.m.u
proton
A ___ has no charge.
It is placed in the nu...
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