Matter
What is Matter?
Matter is anything that
has mass and occupies
space.
(Mass=measure of the
amount of matter in an
object)
Everything you can touch
or hold is matter.
Look around the room
and give examples of
Matter.
Examples: you, books, air,
paper… anything really
States of Matter
Solids
Liquid
Definition: Atoms are
tightly packed together.
Definition: Not tightly
packed together allowing
movement
Gas
Plasma
Definition: Atoms not
touching each other, but
rather floating around
Properties of Matter
Physical Properties –
Describes Matter
Physical Properties
examples:
Chemical Properties –
Describes how a substance
reacts
Chemical Properties
examples:
Color
Texture
Odor
Size
Toxicity
Shape
Melting point
Combustion
Boiling point
Malleability
Density
flammability
Oxidation
Matter
There are two types of Matter:
1. Pure substances
 Elements
 Compounds
2. Mixtures
 Homogeneous (Same all the way
throughout)
 Heterogeneous (Different throughout)
Matter is everything that has Mass and takes
up space.
Pure Substances: Cannot
Be broken down into
simpler compounds and still
A maintain the same
properties
Mixtures: Made of two or
more substances and can
easily be separated
All pure substances are
homogeneous
Elements
Examples: Silver
Gold
Oxygen
Hydrogen
Carbon
Compounds
Examples: Salt
Carbon Dioxide
Water
MgBr2
Homogeneous
(Same
Throughout)
Examples:
Kool-Aid
Coffee
Salt Water
Air
Hershey Bar
Heterogeneous
(Different
Throughout)
Examples:
Hershey Bar (with
Almonds)
Pizza
Vegatable soup
Salad
Classify the following examples as
heterogeneous or homogeneous:
Hershey Bar
Snickers Bar
Pizza
Italian Dressing
Hot Chocolate
Mini Lab: Homogeneous vs.
Heterogeneous
Kool Aid
Trail Mix
TAKE A BREAK!
Lab # 1
Element, Compound, or
Mixture?
Changes of Matter
There are two types of
changes that can occur.
Physical Change
 Chemical Change
Physical Change
vs.
Chemical Change
Chemical Change: A change that
occurs to produce new substances
(cannot be reversed)
Physical Change: A change that does
not produce a new substance
(can be reversed)
Color Change
Tearing
Production of heat/light
Cutting
Formation of precipitation
Folding
Formation of Gas
Painting
Example: Rust
Melting
Example: Baking
Freezing
Example: Food Digestion
Boiling
Example Rotting
Dissolving
Example: Leaves changing color
Example: Ice Cubes melting
Classify the following as a
physical or chemical change
1. Tearing Paper
2. Boiling Water
3. Making Kool-aid
4. Teeth Rotting
Questions
Pg. 58 1-7
Matter Changes by Adding or
Removing Energy (aka Heat)
Freezing
D. Liquid/Gas
E.Gas
Condensing
T
(C)
Melting
Vapor
C.Liquid
B. Solid/Liquid
A. Solid
Heat Added
Lab: Physical vs. Chemical
Density
A measurement of how much matter is in a certain
volume of a substance
Low density= “light”
High density = “Heavy”
Determines if an object will sink or float
Density = mass /volume
Practice Problem #1
(density= mass/volume)
Substance
Density
Air
0.00313
Wood (Oak)
0.85
Water
1.00
Ice
0.93
Aluminum
2.7
Lead
11.3
Gold
19.3
Ethanol
0.94
Methanol
0.79
 List the items which will
float on the particular
sample of ice from the
previous sample.
Calculating Density
Density
Mass
Volume
Density Lab
Law of Conservation of Mass
Mass can never be created or destroyed
Law of Conservation of Mass- States that matter can be
changed from one form into another, but the total
amount of mass remains constant.
Law of Conservation of Mass