1. Science 9: Unit B – Matter and Chemical Change
Lesson 2-2: Chemical and Physical Properties

2. Physical vs. Chemical Physical Property Chemical Property
can be observed without changing the identity of the substance
Chemical Property
describes the ability of a substance to undergo changes in identity

3. B. Physical vs. Chemical Examples: physical melting point chemical
flammable
density
magnetic
tarnishes in air

4. Physical vs. Chemical Physical Change Chemical Change
changes the form of a substance without changing its identity
properties remain the same
Chemical Change
changes the identity of a substance
products have different properties

5. Physical vs. Chemical Signs of a Chemical Change
change in color or odor
formation of a gas
formation of a precipitate (solid)
change in light or heat

6. Physical vs. Chemical Examples: chemical rusting iron physical
dissolving in water
burning a log
melting ice
grinding spices

7. Classify Each of the following as Physical or Chemical Properties
The boiling point of ethyl alcohol is 78°C.
Physical property – describes inherent characteristic of alcohol – boiling point
Diamond is very hard.
Physical property – describes inherent characteristic of diamond – hardness
Sugar ferments to form ethyl alcohol.
Chemical property – describes behavior of sugar – forming a new substance (ethyl alcohol) 6

8. Changes in Matter
Physical Changes are changes to matter that do not result in a change of the fundamental components that make that substance
State Changes – boiling, melting, condensing
Chemical Changes involve a change in the fundamental components of the substance
Produce a new substance
Chemical reaction
Reactants  Products 8

9. Classify Each of the following as Physical or Chemical Changes
Iron is melted.
Physical change – describes a state change, but the material is still iron
Iron combines with oxygen to form rust.
Chemical change – describes how iron and oxygen react to make a new substance, rust
Sugar ferments to form ethyl alcohol.
Chemical change – describes how sugar forms a new substance (ethyl alcohol) 10

10. Table salt is stirred into water (left), forming a homogeneous mixture called a solution (right)

11. No chemical change occurs when salt water is distilled

12. Properties of Matter song
List of chemical changes possible.
Description by senses – shape, color, odor, etc.
Measurable properties – density, boiling point, etc.
PROPERTIES
Old substance destroyed.
New substance formed.
New form of old substance.
No new substances formed.
CHANGE
CHEMICAL
PHYSICAL

13. List of Physical Properties
Chemical Changes
Viscosity
Density
Solubility
Colour
Texture
Odor
Temperature
State
Boiling/Freezing/Melting Point
Color Change
New substance created
Gas Produced

14. Lab 2-1 Chemical and Physical Properties
You will need to compete a lab report for this lab!