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.

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Presentation transcript:

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

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!

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

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?

PROCEDURE AND DATA MATERIALS: PROCEDURE: Read on pg. B 15- 17 and summarize. DATA: WS 14.1 Testing Physical and Chemical Properties WS 14.2 Selecting Materials for Products WS 14.3 Chemical/Physical Properties

softer softer ?

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

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!!!