1. Properties of Matter
Chapter 2
Section 2.2

2. What are Properties of MATTER?
Properties are physical or chemical characteristics of substances.
No two substances have the same properties.
Properties can be divided into 2 categories: physical, and chemical.

3. Physical Property
A characteristic of a substance that can be changed without changing the chemical composition of the substance; ie, no other characteristics will be changed.
Examples: color, shape, temperature

4. More Physical Properties
Size
Solid, Liquid, Gas
Melting/Freezing Point
Boiling/Condensation Point
Conductivity
Maleability
Ductility
Density
Taste
Odor
Hardness
Luster
Texture

5. Chemical Properties
A characteristics of a substance that describes the ability of that substance to change into a different substance.
Examples: Flammability, reactivity

6. More Chemical Properties
Acidity
Alkalinity
Combustability
Corrosivity
Explosivity
Radioactivity

7. Physical Changes
Changes in a substance that do not change the chemical composition of the substance.
Only one physical property of the substance is changed.
The change can be reversed by physical methods.

8. Chemical Changes
Changes in a substance that change the chemical composition of the substance.
All physical and chemical properties of the substance are changed.
The change cannot be reversed by physical methods.

9. Atomic Model Exercise

10. Pair & Share List 3 things you learned in today’s class.
List 2 things you are still unsure of about today’s class.

11. Homework Read Sections 2.2 and 2.3
Answer Review Questions (pgs. 34, 43)