Ch. 2 Sec. 1-3 Matter and Energy
Matter is made of
atoms
Matter combines
to form different
substances
Different States of
Matter
100
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Matter has
mass and
volume
Texture, shape, size, and color
are all examples of...
Physical Properties
True or false. When the state of matter
change, it is considered to be a chemical
change.
False; only the
arrangement of the atoms
changes.
Density describes the relationship between a
substance’s
A.matter and mass
B.mass and volume
C.volume and are
D.temperature and mass
B. Mass and Volume
What is the formula to determine
density?
Mass divided by volume
(m/v)
The only TRUE indication that a
chemical change has taken place
is...
A new substance is being
formed!
Name ONE of the FIVE
indicators that a chemical
change has taken place.
1.
Color Change
2. Formation of a gas
3. Formation of a solid
4. Production of an odor
5. Temp. change
What is the process in which a solid
becomes a liquid?
Melting
.
What are the two processes in which a
liquid becomes a gas?
Evaporation and Boiling
How do evaporation and boiling differ?
A.In evaporation, there’s a formation of gas.
B.In boiling there’s a formation of gas.
C.In evaporation, a gas becomes a liquid
D.In boiling, a gas becomes a liquid.
B. In boiling, there’s a
formation of gas
How do the freezing point and melting
point of a substance relate?
They are the same temperature!
What is the process in which a
solid changes directly into a gas?
Sublimation
What is the boiling point of water?
100 degrees Celsius or
212 degrees Farenheight
What is the process in which liquid
becomes a solid is known as
Freezing
__________ is the measure of how much of
a substance dissolves in a given volume of
a liquid.
Solubility
True or false. You should always use
your five senses to help you identify
a substance.
FALSEEEEEE!! AHHH
What process is this picture
depicting?
Melting
What is the unit used for density?
g/cm cubed
Whether a substance is a solid, liquid, or
gas depends on how close its atoms are to
one another and...
How free the atoms are to move
True or False. Particles in a liquid
of any temperature will move at
the same rate.
FALSE. They will move faster at
higher temperatures.
True or False. You can identify a
substance’s identity just based on its
density.
FALSE. Many items may have the same
densities.