1. Bell Ringer- 20
Grab a tray from lab table 2 (1 per group) Write down as many properties as you can about your substance just by visual observation.

2. Write down as many properties as you can about the sample
1 person from your group may get up at a time to go take a measurement. You must rotate who is doing the measuring. Goal: Team with the most scientific observations

3. 2 Types of Properties
Sort your properties into physical properties and chemical properties
How might we define physical properties?
How might we define chemical properties?

4. Header PG 20:
I can describe a physical and chemical property Homework: Test corrections

5. Properties
Chemical Properties: the ability or inability of a substance to combine with or change into one or more other substances
Physical Properties: characteristic of matter that can be observed or measure without changing the sample’s composition

6. Bell Ringer
Have your Notecards out Notebooks open to pg 20

7. Review it Pure Sub., 2 Elements Pure Sub, Element + Compound
Solution, Elements+ Compound
Suspension, Element+Compound

8. Review it Pure Sub., 2 Compounds Pure Sub, 2 Elements
Solution, 2 Compound
Suspension, 2 Compounds

9. Chemical vs. Physical Properties
In your groups sort each of the following into chemical or physical properties
Density
Luster
Mass
Ability to burn
Color
Volume
Crystalline Structure
Length
Conductivity
Ability to react with water
Malleability
Made of _____ element
Ability to decompose

10. Physical property: property that is displayed without any change in composition.
Chemical property: Any characteristic that gives a sample of matter the ability/inability to undergo a change that alters its composition.

11. Chemical vs. Physical Properties
Density
Luster
Mass
Ability to burn
Color
Volume
Crystalline Structure
Length
Conductivity
Ability to react with water
Malleability
Made of _____ element
Ability to decompose

12. Physical Properties
Extensive property is a property that describes the amount of matter in a sample
Changes when the size of the sample changes
Intensive property is a property that is independent of the sample size.
Doesn’t change when size of sample changes

13. Intensive vs. Extensive Properties
Density
Luster
Mass
Ability to burn
Color
Volume
Crystalline Structure
Length
Conductivity
Ability to react with water
Malleability
Made of _____ element
Ability to decompose

14. Intensive vs. Extensive Properties
Density
Luster
Mass
Ability to burn
Color
Volume
Crystalline Structure
Length
Conductivity
Ability to react with water
Malleability
Made of _____ element
Ability to decompose

15. Physical Change- used to separate mixtures, changes only affecting the form not composition
Chemical Change- used to separate compounds, forms a new substance through a chemical reaction that is not reversible

16. Who am I?