March 8, 2012
1. Pick up your paper. 2. Have a seat quietly.
3. Have a half sheet of paper out. Agenda:
1. Warm‐Up Phases‐‐ check
2. One‐Word Summaries
3. Matter Notes‐‐ Classifying Matter
4. Share one/Get one
5. Blue HOMEWORK sheet
Chapter 2
Matter
It matters.
matter
element
Mar 8­12:29 PM
Mar 8­12:29 PM
atom
molecule
compound
pure substance
mixture
homogeneous
heterogeneous
solution
colloids
suspensions
Chapter 2
What is Matter?
Classifying Matter
A. Matter is anything that has
mass and takes up space (volume).
Matter can be divided into two
categories:
1. Mixtures
2. Substances
B. Mixtures- contain more than
one kind of matter.
There are two types of mixtures:
1. Homogeneous
2. Heterogeneous
1. Homogeneous mixture- A mixture
that is the same throughout.
Examples:
Soda Pop
Kool- Aid
Brass
2. Heterogeneous mixture- A mixture in
which different samples are not the same
throughout.
Examples:
Salad
Chicken Noodle Soup
Muddy Water
All mixtures share one
common property.
THEY CAN BE SEPARATED
by ordinary physical methods:
Sorting, Filtering,
Heating, Cooling, etc.
Example of sifting
C. Substances- CANNOT be
separated by physical methods.
There are two types of
substances:
1. Elements
2. Compounds
1. Elements- contain only one
type of matter (the purest form of
matter).
They cannot be separated.
Examples:
Or anything listed on the periodic table of elements.
2. Compounds- two or more kinds
of matter (elements) that can be
chemically separated, but it will
change the substance.
Examples:
In summary...
mixtures
All _____________
are either
heterogeneous
homogeneous or ___________...
__________
substances are either
All _________
elements
compounds
___________
or ____________.
Chapter 8 ish
Solutions, Suspensions and Colloids
(All specific types of mixtures)
A mixture can be classified by the
size of its largest particles:
1.
2.
3.
Solution- smallest particles
Suspension- largest particles
Colloid- medium sized particles
Solution- when substances dissolve
to form a homogeneous mixture.
Example:
* Will never separate
into layers
* None of the particles will
be trapped when poured
through a filter
Suspension- heterogeneous mixture
that separates into layers over
time. Example:
*Larger particles
settle to the bottom.
*Can usually be
separated using a filter.
Colloid- A mixture where
the small particles of one
substance are mixed
evenly in another
substance.
* Fall between the
category of solution
and suspension.
* Homogeneous
Example:
suspension
solution
solution
suspension
colloid
colloid
Share One, Get One
Write down two items you learned today in two different boxes.
Find others to "get one" from to complete your paper. Remember to "share one" as well.