# Chapter 2 notes - PowerPoint

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```					     Chapter 2

The Properties of Matter
Section 1: What is Matter?
• Matter – anything that has mass and takes
up space
– Examples: air, water, books, hair, pencil, etc.
• Volume – the amount of space an object
takes up; all matter has volume
– Different objects cannot occupy the same
space at the same time.
Volume
• The volume of a liquid is measured in
Liters (L). Small volumes are measured in
milliliters (mL). Large volumes are
measured in kiloliters (kL).
• Liquid volume is measured using a
• Measure liquid volume at the bottom of
the meniscus (curved surface of the liquid).
Volume
• The volume of solid objects is measured in
cubic centimeters (cm3).
• The volume of a regularly shaped object is
measured using a metric ruler.
• The volume of regularly shaped solid
objects is found by multiplying
length x width x height
Volume
• Some objects, like rocks, are irregularly shaped,
so you cannot find volume by multiplying length
x width x height.
• Instead, use the water displacement method.
Place a measured amount of water into a
graduate. Place the solid object into the water.
Notice that the water level rises. Find the
difference in the water level. This is the volume
of the object.

1 mL = 1      cm 3
Mass
• Mass – the amount of matter in an object
• The more matter in an object, the more mass the
object has.
• Mass is measured in grams (g). Small masses
are measured in milligrams (mg). Large masses
are measured in kilograms (kg).
• Mass is measured using a triple beam balance.
Weight
• Weight – the measure of the pull of gravity
on an object
– Gravity is a force of attraction between two
objects.
• Weight is a force, so it is measured in
Newtons (N).
• Weight is measured using a spring scale.
Mass vs. Weight
• Mass is the amount of      • Weight is the measure of
matter in an object.         the pull of gravity on an
• The more mass an object      object.
has, the more gravity      • The more gravity, the
pulls, and so the more       more weight.
weight it has.             • Weight can change with
• Mass DOES NOT                location. You weigh
CHANGE with location.        more on Earth than you
Mass stays the same! If      would on the moon
you go to the moon your      because of a change in the
mass stays the same even     amount of gravity.
though you weigh less.
Inertia
• Inertia – the tendency of an object to resist a
change in motion.
• If an object is in motion it will resist stopping. If
an object is stopped, it will resist moving. Inertia
is NOT a force.
• The more mass an object has the greater its
inertia.