Unit B The Chemistry of Materials

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Chemistry of Materials

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Presentation transcript:

Unit B The Chemistry of Materials

studies properties of materials Oct 01 / 02 Act B12 Evaluating Materials LEARNING TARGET: I can analyze comparison data of materials, use supporting evidence to argue the ‘best choice’ material and discuss trade-offs. CH Q Which is the best material for making a drink container? VOCAB: material, materials scientist, materials engineer type of matter/stuff studies properties of materials how to use materials

convenience (reclose-able cap) recyclability density / weight DISCUSSION Which of three materials - Aluminum, Glass, or Plastic – would make the best drink container? 2. After reading intro, B 3-4 what are some of the properties that make the material you chose the best choice? Possible factors: breakability / safety cost convenience (reclose-able cap) recyclability density / weight

PROCEDURE: Read on pg. B-5 and summarize PROCEDURE AND DATA MATERIALS: PROCEDURE: Read on pg. B-5 and summarize DATA: WS 12.1 Comparing Materials Bar Graphs *Cal vs cal vs kcal video – 3 mins

POST DISCUSSION - Organize cards in groups Possible Categories: - Aluminum – glass – plastic - cost to produce container - percent recycled -containers per ton -kcal of energy to make one ton - percent of solid waste MAKE GRAPHS - Each student in group make diff. graph - Compare graphs (small group / large group using tchr copy)

Graphing Data on Aluminum, Plastic and Glass Percent Recycled Containers per ton of material Container type as percentage of solid waste Cost to produce container kcal of energy to make one ton Pollutants and waste created in producing one ton

DISCUSS & WRITE: Did the graphs change your mind about which material you thought should be used to make the new drink container? Why or why not? Yes, I changed my mind OR No, I still think it is _________. See CER 12.2 for my evidence ANALYSIS - Discuss and answer Q 1 & 2 on pg. B- 6

ANS CHALLENGE Q Which is the best material for making a drink container? A: depends on the situation and needs/priorities HOMEWORK READ Life Cycle info on pgs B 8-11