This document contains definitions and explanations of various chemistry concepts ranging from atoms and elements to chemical bonds, compounds, states of matter, and other fundamental topics. It provides brief descriptions and sometimes diagrams or equations for each concept, with links to additional information and videos for further learning. The document acts as an overview and study guide for basic chemistry.
2. A Thebasic building
blocks of matter
that make up
everyday objects.
A desk, the air,
and even you….
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Video 1, Video 2
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further. Next
3. More about Atoms….
Protons – positive charge
Neutrons – no charge
Electrons – negative
charge and circle the
nucleus.
Quark – building blocks
Video 1, Video 2
Back
4. B
The result of
the forces of
attraction that
hold together
atoms in an
element or
compound.
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Learn more
5. More Bonding
Ionic Bonds Single Bonds
Covalent Bonds Double Bonds
Polar Covalent Bonds Triple Bonds
Hydrogen Bond
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6. C
Pure chemical
substance consisting of
two or more different
chemical elements, that Click here for answer
can be separated into Video 1, Video 2
simpler substances by
chemical reactions. Next
7. D
Physical property of
matter, unique to
each element and
compound. How
closely “packed” or
“crowded” the
material appears to
be.
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Video 1, Video 2
Next
8. Substance that can not be
E reduced to a simpler
substance by normal
chemical means,
composed of one type of
atom distinguished by it’s
atomic number.
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Video 1, Video 2, Video 3
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9. Elements Expanded
Periodic Table (click Symbol
for more information) Atomic Weight
Name Group
Atomic Number Block
Back Periodic Table
11. F
A combination of
elemental symbols
and subscript
numbers that is
used to show the
composition of a
compound
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Learn More
Video 1, Video 2
Practice
Next
12. G
Lowest most
stable energy
state of a
nucleus.
Zero-point
energy
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Video 1
Next
13. The period of
H time it takes for
a substance
undergoing
decay to
decrease by
half.
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14. I Atoms of the same
element with different
numbers of neutrons.
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Video 1, Video 2
Carbon
Oxygen
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15. J
They won the
Nobel Prize
for Chemistry
in 1935 for
their discovery
of artificial
radioactivity.
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More
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16. K Energy of motion
The energy due to the
movement of an
object
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17. L The reactant in a chemical reaction that limits
the amount of product that can be formed. The
reaction will stop when all of the limiting reactant
is consumed.
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answer
Video
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18. M
Everything around you. Made of
atoms and molecules. Has a
mass and takes up space.
Elements and compounds move
from one physical state to
another and not change.
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20. Solids
Fixed volume and shape.
Particles are locked into place.
Not easily compressed
Little free space between particles
Does not flow easily.
Particles cannot move/slide past one another
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21. Liquid
Assumes the shape of the part of the container which
it occupies.
Particles can move/ slide past one another
Not easily compressed
Little free space between particles.
Flows easily
Particles can move/slide past one another.
Back
22. Gas
Assumes the shape
and volume of its
container.
Particles can move
past one another
Compressible
Lots of free space
between particles
Flows easily
Particles can move
past one another.
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23. N
The number of
equivalents of a
substance dissolved
in a liter of solution
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24. O
The movement of solvent
molecules through a
selectively-permeable
membrane into a region of
higher solute concentration
aiming to equalize the solute
concentrations on the two
sides.
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25. P
The concentration of hydrogen ions in
commonly expressed in terms of ____ scale.
Scale from 0 (acid – 14 base)
Tested on Litmus Paper
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Video 1, Video 2
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26. Q&Q Refers to type of
information based in
amounts, or
measurements.
Refers to
information based
on qualities.
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Video
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27. R
The particles which
are emitted from
nuclei as a result of
nuclear instability.
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Video
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28. S Click here for answer
Video
Property of the
surface of a liquid
that allows it to
resist an external
force.
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29. T Physical property of
matter that
quantitatively
expresses the common
notions of hot and cold.
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Video 1
Visual Examples
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30. More about Temperature
Measured in:
Kelvin (K)
Celsius (C)
Fahrenheit (F)
Newton
Heat Capacity
Boiling Point
Melting Point
Freezing Point
Absolute Zero
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31. U Smallest unit of a
crystal, which, if
repeated, could
generate the whole
crystal.
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32. V Substance with a
high vapor pressure.
Tendency of a
substance to
vaporize.
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33. W
Made by combining
two hydrogen atoms
and one oxygen
atom.
H2O
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34. X
Rare odorless,
colorless, tasteless,
chemically
unreactive gas.
Atomic number 54
Xe
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35. Y
The amount of Click here for answer
product obtained in Video 1, Video 2
a chemical reaction.
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36. Z Microporous,
aluminosilicate
minerals
commonly
used as a
commercial
adsorbents.
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