Focus Activity: Get 1 of each of the colored sheets of colored paper. Put the
bright pink on top of the lavender on top of the gold on top of the blue. Shift
each paper up so that 1.5 cm of the color is showing. Fold from the top down so
that the 2 bright pink parts meet. See Board for Example!! See below for
labeling.
Classification of Matter Section 2.1
Substance
Mixture
Element
Homogeneous
Atom
Solution
Compound
Heterogeneous
Molecule
Suspension
Concept Map
Colloid
Extra Information
Cut each page in half - Except for the top and bottom blue
page Almost to the top staple.
Substance
Mixture
Element
Homogeneous
Atom
Solution
Compound
Molecule
Concept Map
Heterogeneous
Suspension
Colloid
On each half sheet (except
Concept Map) write…
2. Definition
2. Definition
3. Example
3. Example
On the top flap of EVERY page
write…
1. Diagram
1. Diagram
Matter – top page flap
• Anything that has mass and takes up
space
Matter can have many different
properties or characteristics.
These properties and
characteristics are used to
classify matter in much the same
way that the characteristics of
living things are used to classify
organisms.
Chemistry is the study of the
properties of matter and how
matter changes.
Substance
• Matter that is pure
• Has a specific composition (what it’s made
of) All particles are the same.
• Specific properties
• Properties
– Physical – characteristic of a pure substance that can be observed
without changing it into another substance Examples of physical properties are:
boiling point and freezing point, hardness, texture, color, solubility, phase of matter, flexibility, magnetism,
conductivity, etc.
– Chemical – characteristic of a pure substance that describes its
ability to change into different substances Examples of chemical properties are
flammability and reactivity with other substances
.
Take a baggie. Sort the objects in your baggies
into 3 groups. Describe the differences
between the groups and make a list of
characteristics.
Examples of Substances
All the
Same
Has specific
properties
Has a
specific
composition.
Elements
• Pure substance that can not be broken
down into any other substances by
chemical or physical means.
• Composed of identical
atoms.
Atoms
• Basic particle from which all elements are
made.
Compounds
-composed of 2 or more elements in a fixed
ratio
– properties differ from those of the individual
elements
– Chemical Bonds hold the elements together
– EX: table salt (NaCl)
Molecules
• Groups of two or more atoms bound by
chemical bonds
• Can be two of the same element
Focus Activity:
Make a graphic organizer to…
• Show the relationships between:
– Substances
– Atoms
– Compounds
– Molecules
– Elements
– Grab a markerboard, marker and sock, place
it under your desk for use later in the period.
DO NOT DRAW ON THE MARKERBOARD!
Chemical Formula-Extra Info
• Shows the compound and the ratio of
atoms.
Mixtures
Variable combination of 2 or more pure
substances. Each keep individual
properties
http://player.discoveryeducation.com/index.cfm?guidAssetId=c44da0f1-32c2-4de1-90e0-
89e856fb9518
Heterogeneous –
You can see the different Parts
Homogeneous –
Evenly Mixed
Can not see the different
Parts
Tyndall Effect (Extra Info)
• The scattering
of light by particles
in a mixture
http://www.youtube.com/watch?v=gheuYq
Q6phE&feature=related
Mixtures
• Suspension
– heterogeneous
– large particles
– Tyndall effect
– particles settle
– EX:
• fresh-squeezed
lemonade
• Sand in water
• http://player.discoveryeducation.com/index.cfm?
guidAssetId=60c09eba-09c5-4273-916f078d37b3f92b
Mixtures
• Colloid
–
–
–
–
–
heterogeneous
medium-sized particles
Tyndall effect
particles don’t settle
EX:
• milk
• Clouds
• Smoke
• mayo
Mixtures
• Solution
– homogeneous
• very small particles
– no Tyndall effect
– particles don’t settle
– EX:
• rubbing alcohol (ethyl alcohol and water)
• Air (N2 + O2)
• http://player.discoveryeducation.com/index.cfm?guidAssetId=eeed02e8-60c2-4bd8-a4f1ef6c8004a30b
What type of Mixture am I?
– mayonnaise
– muddy water
– fog
– saltwater
– Italian salad dressing
Colloid
Suspension
Colloid
Solution
Suspension
Concept Map- Fill this in on your foldable
MATTER
yes
MIXTURE
yes
Is the composition
uniform?
Homogeneous
Mixture
(solution)
PURE SUBSTANCE
no
Heterogeneous
Mixture
Colloids
no
Can it be physically
separated?
yes
Can it be chemically
decomposed?
Compound
Suspensions
no
Element
Pure Substances (Extra Info)
• Law of Definite Composition
– A given compound always contains the same,
fixed ratio of elements.
Two different compounds,
each has a definite composition.
Pure Substances (Extra Info)
Law of Multiple Proportions
Elements can combine in
different ratios to form
different compounds.
CO
CO2