Download presentation
Presentation is loading. Please wait.
2
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. B12 Evaluating Materials CHALLENGE 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 Studies how to use materials
3
DISCUSSION Which of three materials - aluminum, glass or plastic – would make the best drink container? Read B3-4 2. What are properties that help you make best choice of material? (student talk) Properties of best choice materials breakability / safety cost convenience (reclose-able cap) recyclability density / weight`
4
PROC AND DATA MATERIALS: PROCEDURE: DATA: WS 12.1
5
POST DISCUSSION Organize cards in groups (activity) Debrief - possible Categories: cost to produce container percent recycled containers per ton kcal of energy to make one ton container type as percent of solid waste MAKE GRAPHS Each student in group make different graph Compare graphs * (small/large group using teacher copy next slide)
12
DISCUSS & WRITE: Did the graphs change your decision on drink container material chosen? Why or why not? ANALYSIS: B6 1) The 2 most important types of information for choosing were ---- because --- 2) I would also like to know --- because --- 3)
13
CER *started end of class if extra time ANS CHALLENGE Q Which is the best material for making a drink container? A: HOMEWORK 1. READ CAREFULLY - Life Cycle on B (next class) 2. CER (10pts, next class)
14
Complete 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. Fast Friday Complete B12 Evaluating Materials CHALLENGE 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 Studies how to use materials
15
WHAT IS THIS A PICTURE OF ??
17
life-cycle raw material manufacturing
LEARNING TARGET: I can construct a life-cycle diagram of a product and use it to recommend ways to reduce the product’s negative impact on the environment. Oct 16 / Act B13 Product Life Cycle CHALLENGE Q: How can a life-cycle diagram be used to make a decision about a product? DISCUSSION vocab: life-cycle raw material manufacturing useful life end of life lion king circle of life black hole size comparison changes through life starting "stuff" creating / making before throwing away when done using
20
DISCUSSION: 1. What would be the complete life story of a container if it could talk? (student talk) raw material – manufacture – use - recycle? / end of life
21
circle version
22
straight-line version
23
Ravensdale silica mine leads to...
24
Seattle glass manufacturing *show 5 min video
25
PROC AND DATA: Materials: Procedure: Read B 8-10 and summarize Data: WS / 13.2
26
POST DISCUSSION Compare Life cycle diagrams How is life-cycle diagram different from bar graph? shows a process over time – not just one point in time How can life-cycle be changed to be greener? reduce energy needs, reduce – reuse – recycle – (renew)
27
ANALYSIS: B 12 Q2 a. b. c. Q5 demand up? = more raw mat'ls, more energy to make, more recycling needed, more waste raw mat'ls gone? = less of everything (but more of alternative needed) improved design? = more efficient everywhere life-cycle needs to be on container? (various answers – but "yes if room" can't hurt)
28
ANS CHALLENGE Q: How can a life-cycle diagram be used to make a decision about a product? A: life-cycle shows ALL needs of container from beginning to end helping make more responsible decision (but no data – graphs do that) HW: 1. check MISSING assignments (ASAP)
29
Oct 20 Fast Friday Product Life Cycle CHALLENGE Q:
LEARNING TARGET: I can share my life-cycle diagram of a product and use it to recommend ways to reduce the product’s negative impact on the environment. Oct Fast Friday Product Life Cycle CHALLENGE Q: How can a life-cycle diagram be used to make a decision about a product?
31
Chemical and Physical Properties of Materials
LEARNING TARGET: I can collect chemical/physical property data of different materials and determine the ‘best’ material for a given product. Oct 23 / Act B14 Chemical and Physical Properties of Materials CHALLENGE Q How do the properties of materials determine their uses? DISCUSSION Vocabulary chemical properties-reacts and new chemical made physical properties-5 physical senses
32
*show Obla-di song video – 3 mins
DISCUSSION 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 senses *show Obla-di song video – 3 mins 3. Examples of a chemical properties: add chemical = reaction and new chemical made
33
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?
34
PROC AND DATA MATERIALS: PROCEDURE: Read B and summarize DATA: WS 14.1 POST DISSCUSSION: How can we sort the materials?
35
softer softer ?
36
ANALYSIS none ANS CH Q How do the properties of materials determine their uses? A: various answers depending on need HOMEWORK 1. WS 14.2 (10pts, next class) 2. any missing parts of Journals (ASAP)
37
HW 14.2 DEBRIEF
42
Video: The physical properties song
43
Who is this?
44
Oct 24 / 25 Act B15 Families of Elements CHALLENGE Q
LEARNING TARGET: I can use the chemical and physical properties of elements to group (classify) them by common characteristics. Oct 24 / Act B15 Families of Elements CHALLENGE Q How can elements be grouped based on their physical and chemical properties?
45
atom- smallest "unit" of matter atomic mass -atom "weight"
CHALLENGE Q How can elements be grouped based on their physical and chemical properties? Vocabulary: Periodic Table of Elements-all types of matter arranged based on structure and properties atom- smallest "unit" of matter atomic mass -atom "weight" element-pure matter metals-elements with special properties "Family" (of elements)-related chemically (metals, gasses…)
46
DISCUSSION: Identify parts of Element Card
47
PROC AND DATA Materials: PROCEDURE: Read B and summarize DATA: 1. Sort the 14 elements into at least 3 groups. Record your group names and each element you chose to place in that group. (Do Not Bend The Cards.) 2. Record all similarities WITHIN each “group” 3. Venn Diagram the Similarities and Differences between your chosen method of elemental groupings.
49
Dmitri Mendeleev's first Periodic Table
ANALYSIS: B21 Q 3 Q4 grouping elements helps simplify what needs to be remembered… and shows patterns Dmitri Mendeleev's first Periodic Table a. noble gases = not usually reactive b. alkali metals/halogens = highly reactive c. alkali and alkali earth metals = all metals d. alkali and alkali earth metals = all solids e. noble gases = all gases show element videos
50
ANS CH Q How can elements be grouped based on their physical and chemical properties? A: similar properties (P + C) state/phase of matter (solid, liquid, gas) metal or non-metal increasing mass reactivity HW: B21 Q5 written below (10pts, next class)
51
Elements Videos-Group 1 Metals, Group 8 Gases in Balloons, Fast and Furious on Helium
52
Elements Videos: Spongebob Elements Song, Genius of Mendeleev's Periodic Table, Periodic Table & Mendeleev
54
Elements and the Periodic Table
LEARNING TARGET: I can differentiate between: elements and compounds; molecules and atoms and how they all relate to each other. Oct 30/ Act B16 Elements and the Periodic Table CHALLENGE Q What are the elements and how do they relate to compounds? VOCAB: chemical formula- molecule - compound-
55
chemical formula-uses element symbols to make a chemical H2O
CHALLENGE Q What are the elements and how do they relate to compounds? VOCAB: chemical formula-uses element symbols to make a chemical H2O molecule -two or more atoms bonded together O2, SiO2 (quartz) compound-two or more DIFFERENT atoms bonded together NaCl (salt), C12H22O11 (sugar)
56
PROCEDURES Read Activity 16 and complete all stop and thinks and Analysis 1-4. Write the questions in the answers, where tables are required, use a ruler and make them neat. Stop and Think 1 The ancient Greeks were correct about elements because … 2. The ancient Greeks were wrong about the elements because …
57
Stop and Think 1 The ancient Greeks were correct about elements because… The ancient Greeks were wrong about the elements because … Stop and Think 2 1. Mendeleev built on other scientists’ work by … 2. Other scientists built on Mendeleev's work by… Stop and Think 3 Use Periodic Table to decide if METAL or NON-METAL: lithium (Li)- ?, carbon (C) - ?, sulfur (S)-?, calcium (Ca)-? , titanium (Ti)-?, bromine (Br)-? Stop and Think 4 Magnesium chemical symbol : family : phase at room temp. : Based on the family, magnesium should be...because...
58
Stop and Think 5 Compounds are different from elements that form them (2 ways) … Stop and Think 6 Baking soda contains … (element types and # of each type of atom) Using Periodic table in book color your copy using: alkali metals = light green alkaline Earth metals = light purple transition metals = light red non-metals = orange halogens = yellow Noble gases = light blue
59
Analysis 1- Make table in your notebook
2.a) Table salt is …….. b. Physical properties of table salt are…. c. Table salt, chlorine and sodium are different because salt is….. chlorine is…. sodium is….. 3. Seawater is ……...because…… 4. The relationship between an atom and a molecules is….
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.