What is Matter?
Ch. 1, Sec. 1
Matter is….
• Anything that has mass and takes up space.
Matter & Volume
Volume is…
The amount of space taken up, or occupied,
by an object.
What is the
volume of the
rectangle?
How do you
figure it out?
Matter & Volume
Volume of liquids…
We measure liquids by using the liter (l) and
milliliter (ml).
What is the volume of
the liquid in the beaker?
Matter & Volume
Measuring the volume of liquids…
We will usually use a graduated cylinder to
measure a liquid, but they can be tricky!
When reading the level,
look at the meniscus.
Matter & Volume
Meniscus:
The curve at the surface of a liquid.
Volume of an irregularly shaped
solid object
How would you find the volume of this object?
Volume of an irregularly shaped
solid object
Matter & Mass
Another characteristic of all matter is
mass…
Mass is the amount of matter in an
object. Mass is the same wherever you
are in the universe.
Which object has more mass?
The Difference Between
Mass & Weight
They are not the same!!!
Weight is a measure of the
gravitational force on an object.
We use a unit called the newton to
measure weight.
An object’s weight can change
depending on its location in the
universe.
Mass = 120 kg
Weight = 1200 N
Mass = ________
Weight = _______
DENSITY
S-5-3-3_Density PPT
Density
• Density is defined as mass per unit volume.
mass
m
D
or
volume v
• The unit we use is
3
g/cm
Which has the greater volume?
• An empty pail has a low density because there is
not much matter in its volume.
• A pail full of sand has a greater density because
there is more matter in its volume.
Source: http://commons.wikimedia.org/wiki/File:Sand_bucket.jpg
Do all objects
(solids, liquids, and gases)
have density?
The density of water is……
1
Which has a greater density?
• Ice or water?
Find the density of the box below:
Mass 456 g
12.5 cm
5.6 cm
5.6 cm
Density
Object
Mass
(g)
50
Vol
(cm3)
18.52
Density
(g/cm3)
Sink or
Float?
2.70
Sink
150
7.89
19.0
Sink
Water
500
500
1
---
Ice
10
10.87
0.92
Float
Block of
pinewood
800
1600
0.5
Float
Aluminium
sheet
Gold bracelet
4. An object has a length of 3 cm, a width of 4 cm,
and a height of 10 cm. What is the volume of the
object?
Volume  length  width  height
Volume  3cm  4cm 10cm  120cm
3
Density of the box:
Concept Map
Density
defined as
Mass per unit
volume
related to
mass by
D = M/V
related to
density by
Mass
grams
defined
as
Amount of
substance in a
body