3. Tuesday, October 9, 2018
Summary Statement: Think back to what we did last class. Write a ONE SENTENCE summary on your paper!
Warm-Up: Explain which product you would use for a drink container. Include 2 pieces of evidence from last week.
Learning Target: I can collect chemical/physical property data of different materials and determine the “best” material for a given product.
Success Criteria: I will be successful when I can carefully collect data and make conclusions about the “best” material.
Plan for Today
1. Vocabulary/Notes
2. Identifying Physical and Chemical Properties/AQs
3. Yellow Review Sheet

4. Vocabulary
chemical properties: reacts and new chemical made; chemical changes are irreversible
physical properties: 5 physical senses; physical changes DO NOT change the identity of the substance; reversible
When the arrangement or distance between particles change; the particles stay the same!

5. 1. Difference between physical and chemical properties.
PHYSICAL = no chemical reaction
CHEMICAL = add another chemical and reaction
2. Examples of physical properties:
see, hear, smell, touch, (taste) = physical sense
3. Examples of a chemical properties:
add chemical = reaction and new chemical made

6. Examples of physical properties:
Color – Does it resemble the color of something else?
Hardness – How resistant to scratching is it relative to another substance?
Luster – How is light reflected from the material? Shiny, dull, metallic, glassy, waxy, etc.
Light transmission – Does light pass through the material?
Texture – How does the material feel between the fingers?
Gritty, smooth, rough, etc.
Flexibility – Does the material bend with gentle pressure?
An example of a chemical property:
Reaction with hydrochloric acid – Does it react?

8. PROCEDURE AND DATA
MATERIALS:
PROCEDURE: Read on pg. B and summarize.
DATA: WS Testing Physical and Chemical Properties
WS Selecting Materials for Products
WS Chemical/Physical Properties

9. softer
softer ?

10. ASSIGNMENTS
Finish BLUE sheet and TAPE IN!!! Finish Analysis Questions Page B-17 #2 & #3! Finish YELLOW sheet and TAPE IN!!!

11. REFLECTION
Give an example of a physical property AND a chemical property! How do they help determine the identity of objects? Finish BLUE sheet and TAPE IN!!! Finish Analysis Questions Page B-17 #2 & #3! Finish YELLOW sheet and TAPE IN!!!