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What is matter?
Matter is anything that
1. Has mass
2. Takes up space (has volume)
Characteristics of matter that are
unique to living things
Anyproperty of matter that can be
observed by your senses without
changing the composition of the
Forexample you don’t have to
change what an apple is made of to
see that it’s red or to hold it in your
You rely on physical properties all the
time to identify or describe matter
Are your socks clean? (odor)
Can you fit all your books into your
book bag? (volume)
Does your shirt match your pants?
And many, many others
Any property of matter that
describes a substance based on
its ability to change into a new
substance with different properties
Example: Piece of wood can be burned to create
new substances (ash and smoke) with properties
different from the original piece of wood.
You can also observe chemical properties with
your senses but they aren’t as easy to observe
as physical properties.
Some chemical properties include flammability
(ability to burn), reactivity with oxygen, reactivity
with acid, and reactivity with water. (Reactivity
just means that when 2 substances get
together, something can happen.)
Whatare the two properties of all
What is the difference between
physical and chemical properties?
With a Partner
Playa game of 20 Questions. One
person will think of an object and the
other person will ask yes/no questions
about it. Write the questions down in
your notebook as you go along. Put a
check mark next to the questions
asked about physical properties.
When the object is identified or when
the 20 questions are up, switch roles.
What would you say?
you were asked to describe an
orange to someone who had
never seen an orange, what would
you tell the person?
Anything that has mass and takes
The smallest particle of a
substance, such as water, that is
still identified as that substance
States of Matter
Easily observed physical property of
At ordinary temperatures, all matter exists
in one of three states.
In each of these states the molecules of
the material behave in different ways.
States of Matter
The state of matter of a substance
depends on how fast the particles move
and how strongly the particles are attracted
to each other.
Anychange in matter that does not
change the chemical properties of
Forexample, if you break a piece of
chalk in two, you change the physical
properties of size and shape. The
chemical properties of the chalk
A change in matter in which one
substance is converted into
tablets, soured milk, burning
Chemical Properties vs. Chemical Changes
Chemical properties determine
how substances interact with each
other, while chemical changes are
the result of the interaction
other words: Chemical
properties can result in chemical
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