Matter
EQ: Can I identify what makes up
all matter, and can I identify the
physical properties of matter?
SPI 0807.9.1
What is Matter?
• Matter is anything that has
mass and takes up space
(volume).
Everything in the universe is
made up of matter!
Matter
– Examples:
• A brick has mass and takes up space
• A desk has mass and takes up space
• A pencil has mass and takes up space
• Air has mass and takes up space
All of the above examples are considered matter
because they have mass and take up space. Can you
think of anything that would not be considered
matter?
If matter makes up
EVERYTHING,
then what makes up
matter?
ATOMS!
Atoms
• Smallest possible
unit that makes up
ALL matter!
-
+
+
+
+
-
-
• Cannot be seen by
the naked eye or
even an optical
microscope.
• Can combine, or
bond, to create
additional types of
matter.
Atoms are so small that…
• It would take a stack of about 50,000
aluminum atoms to equal the thickness
of a sheet of aluminum foil from your
kitchen.
www.deckersfoods.com
• A human hair is about 1 million carbon
atoms wide.
• A typical human cell contains roughly 1
trillion atoms.
• A speck of dust might contain 3
trillion atoms.
.
• It would take you around 500 years to
count the number of atoms in a grain
of salt.
Just How Small is an Atom?
Mass, Volume, and Weight
Foldable
What is Mass?
• Mass is the amount of
matter in an object.
• You and your pencil are made up of
matter. You have more matter, so
you have more mass.
• The mass of an object is the same no
matter where in the universe the
object is located.
• Mass is expressed in grams (g, kg, mg)
Measured
with a triple
beam
balance!
What is Volume??
• The amount of
space taken up,
or occupied by
an object is
known as
VOLUME.
Measured with a
graduated
cylinder.
• Volume is expressed
in units of:
– Liquids: mL
– Solids: cm3
WEIGHT
• Weight is the measure of the gravitational
force exerted on an object.
• Expressed in Newtons (N)
Measured
with a scale.
• The more mass an object has,
the greater the object’s weight.
What is the difference
between mass and weight?
SPI 0807.9.7
What’s the difference
between mass and weight???
• Mass is how much matter is in an
object.
• Weight is how much force
(gravity) is acting on the object.
Mass vs. Weight
Mass
Weight
• NEVER
CHANGES,
regardless of
where something
or someone is
Mass = 59 kg
Weight = 579 N
• Depends on the
amount of
gravity acting
on the object
Why do you
think the
person’s
weight is
less on the
moon?
http://www.exploratorium.edu/ronh/weight/index.html
Mass = 59 kg
Weight = 96 N
When it comes to mass, it doesn't matter where
you are because the mass of an object is always
the same.
But if you are buying something by weight, you
will get a lot more for the same cost if you buy it
on the moon!