1. Unit B The Chemistry of Materials

2. studies properties of materials
Oct 01 / 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

3. 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

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

5. 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)

6. 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

7. 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

8. 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