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.

1. Ms.Smith Chem 1

2. A  Thebasic building
blocks of matter
that make up
everyday objects.
A desk, the air,
and even you….
Click here for answer
Video 1, Video 2
Click here to delve
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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Video 1, Video 2
Next
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
Learn more Next

9. Elements Expanded
 Periodic Table (click  Symbol
for more information)  Atomic Weight
 Name  Group
 Atomic Number  Block
Back Periodic Table

10. 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.
Click here for answer.
Video 1, Video 2
Next

14. I  Atoms of the same
element with different
numbers of neutrons.
Click here for answer
Video 1, Video 2
Carbon
Oxygen
Next

15. J
 They won the
Nobel Prize
for Chemistry
in 1935 for
their discovery
of artificial
radioactivity.
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More
Next

16. K  Energy of motion
 The energy due to the
movement of an
object
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Video 1, Video 2
Next

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
Next

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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Video 1, Video 2
Learn More

19. States of Matter
Solid
Liquid
Gas
Next

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
Back

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.
Back

23. N
 The number of
equivalents of a
substance dissolved
in a liter of solution
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Next

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.
Click here for answer
Video 1, Video 2
Next

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
Next

26. Q&Q  Refers to type of
information based in
amounts, or
measurements.
 Refers to
information based
on qualities.
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Video
Next

27. R
 The particles which
are emitted from
nuclei as a result of
nuclear instability.
Click here for answer
Video
Next

28. S Click here for answer
Video
 Property of the
surface of a liquid
that allows it to
resist an external
force.
Next

29. T  Physical property of
matter that
quantitatively
expresses the common
notions of hot and cold.
Click here for answer
Video 1
Visual Examples
Next

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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Next

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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Next

35. Y
 The amount of Click here for answer
product obtained in Video 1, Video 2
a chemical reaction.
Next

36. Z  Microporous,
aluminosilicate
minerals
commonly
used as a
commercial
adsorbents.
Click here for answer