1.1
1.1
Chapter 1 Lesson 1 Describing Matter
Pages 11-3
Chapter 1 Lesson
Describing Matter
Pages 1-3
Key Concept #1 ~ What properties describe matter?
Key Concept #1 ~ What properties describe matter?
Answer ~ Every form of matter has two kinds of properties physical
properties
andmatter
chemical
Answer
~ Every
form of
hasproperties.
two kinds of properties -
physical and chemical properties.
Matter can have many different properties, or characteristics
that are used to describe, identify, and classify it.
Not all matter is a substance. A substance is a single kind of
matter that is PURE; it has specific properties.
A substance is a single kind of matter that is PURE that gives
it specific properties.
Example of Substances ~
1. Water ~ is a pure substance
EXAMPLE
2. Table Salt is a pure substance. It has the same properties
1. Table Salt is a pure substance - has the same properties
or composition whether is comes from seawater or salt mines.
or composition whether it comes from seawater or salt mine.
3. 2.
CONCRETE
IS NOT A PURE SUBSTANCE ..
Concrete is not a pure substance.
Physical
Properties
is a is
characteristic
of aofsubstance
thatthat
can can
BE
A physical
property
a characteristic
a substance
OBSERVED
without
changing
into
a
different
substance.
be observed without changing into a different substance.
Examples
of Physical
Properties
EXAMPLES
OF PHYSICAL
PROPERTIES
1. 1.
State
of
Matter
~
Solid,
Liquid or Gas
State of Matter
2. 2.
Freezing,
Melting
andorBoiling
Freezing,
Melting
BoilingPoints
Point
3. 3.
Shape
Dissolving
4. 4.
Mass
Shape
5. 5.
Luster
Mass~ Shiny or Dull
6. 6.
Flexibility
Luster
7. 7.
Texture
~ Hard or Soft, Rough or Smooth
Flexibility
Texture
8. 8.
Color
Color
9. 9.
Conductivity
~ Electricity or Thermal (Heat)
10. Conductivity - Electrical and Thermal
Nov 3­8:13 AM
1.1
Chapter 1 Lesson 1 Describing Matter
Pages 1-3
A chemical property is the ability to change into different
substances.
EXAMPLES OF CHEMICAL PROPERTIES
1. Rusting (Iron reacts with oxygen in the air)
2. Tarnishing (Silver reacts with sulfur in the air)
3. Flammability (Ability to burn)
4. Sour
5. Ferments (Conversion of sugars into ethanol)
Difference between physical and chemical properties is that
chemical properties cannot be observed without changing the
substance into different substance.
EXAMPLE
1. Charcoal burns when combined with oxygen in the air
produces new substances - carbon dioxide, ash and water.
2. Iron rust when combined with oxygen in the air produces a
new substance - rust or iron oxide.
Nov 3­8:13 AM