Matter is anything that has mass and takes up space. There are two types of properties of matter: physical properties and chemical properties. Physical properties can be observed without changing the composition of the matter, such as color and size. Chemical properties describe a substance's ability to change into a new substance with different properties through chemical reactions like burning or rusting. States of matter, including solid, liquid, and gas, are physical properties that depend on how strongly the particles of a substance are attracted and how fast they are moving.
4. Physical Properties
Anyproperty of matter that can be
observed by your senses without
changing the composition of the
matter
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
hand
5. Physical Properties
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?
(color)
And many, many others
6. Chemical Properties
Any property of matter that
describes a substance based on
its ability to change into a new
substance with different properties
7. Chemical 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.)
8. Think/Pair/Share
Whatare the two properties of all
matter?
What is the difference between
physical and chemical properties?
9. 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.
10. What would you say?
If
you were asked to describe an
orange to someone who had
never seen an orange, what would
you tell the person?
13. Molecule
The smallest particle of a
substance, such as water, that is
still identified as that substance
14. States of Matter
Easily observed physical property of
matter.
At ordinary temperatures, all matter exists
in one of three states.
1- Solid
2- Liquid
3- Gas
In each of these states the molecules of
the material behave in different ways.
15. 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.
Gas
Liquid
Solid
16. Physical change
Anychange in matter that does not
change the chemical properties of
the matter.
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
remain unchanged.
17. Chemical change
A change in matter in which one
substance is converted into
another substance
Some examples:
rusting, effervescent
tablets, soured milk, burning
18. Chemical Properties vs. Chemical Changes
Chemical properties determine
how substances interact with each
other, while chemical changes are
the result of the interaction
In
other words: Chemical
properties can result in chemical
changes.
