Homework for tonight: All classes: 

• Finish your Activity 16 Common Core packet;
• Prepare to present your Element Project on our next school day; 
• Element projects are late; Monday is the last day to turn yours in except for newly arrived or returned students.

Homework for tonight:
All classes: work on your Activity 16 Common Core packet.  And, if you are in
Periods 6 and 1: you will present your Element Project, so prepare for it tonight.

Periods 2 and 5 will present on our next school day.

Happy Last Day of Vacation!

No not really.  Teachers go back to school on Monday, but students get another day off.  

 

So, since our Unit test and our Element Project due dates were both snowed out, here's the plan: 

Monday - no school for students....only for teachers. 

Tuesday - Element Projects due; Review for test

Wednesday - Unit Test and start work on our next unit (Water)

Bottom Line:  Study for your test!  Also, Get those element projects done!  Tips for those of you who did not yet turn in an element project:

a) use the assignment package as a checklist ;

b) If you're having trouble finding information about environmental effects of your element, do a Google search with your search term in quote marks to make your search more accurate.  Ex: "environmental effects of iron".  Use the same technique for health effects or applications (uses).

c) find a diagram or photo of an atom of your element and include it in your project.  Use Google or another search engine, type in "diagram or photo of a _______ atom" and type the name of your element in the blank. Then click on image search and you should find an image you can use, like either of these:

d) Re-read your own writing, to make sure you said something that makes sense - I've seen lots of phantom words and phrases so far.

e) Citations: Include the name (web address)  of at least one of your sources of information. 

Consider emailing me your project before Monday night if its not on a poster board to get it out of the way and get it graded sooner.

Enjoy the rest of vacation!

Homework:
Study guide - Check your answers.  Review your study guides. Quiz yourself or your study buddy.

17.    For the previous question (16. Which of the following is an element?), how do you know?  Explain:

Chemical symbol always has an upper case letter for the first letter and a lower case letter for the second letter.

18.      Why are some elements in the same family (column) on the periodic table?  What do they share?

                              properties

For the next 2 questions, use this link to see the first pie chart (What do we throw away?) at another website:    http://www2.epa.gov/recycle/recycling-basics

19.     Think about all the trash we make ordering take-out and other activities.                       What percentage of trash is recycled or composted? _34.1%__%

20.    What is the total percentage of the two smallest slices or wedges of this chart?

  _11.7____% + __34.1____ % =  _45.8_%     

What categories make up these slices?

_composted _ and _combusted_.

 For the next 2 questions, use this link to see the first pie chart (What do we throw away?) at another website:  http://visual.ly/which-girl-scout-cookies-score-most-brownie-points

25. What percentage of cookie sales is made up of Samosas or Caramel deLites?                      19%.                                                                                                                                   
What are the three largest percentages of cookies sold?                                                                                               ____Thin Mints___  =        _25%                                                                                               ____Other_______  =        _23%                                                                             Samosas or Caramel deLites =                   _19%   

26. If you’re their business consultant, which cookie line would you tell them to drop and why?

Shortbread / Trefoils  sell only  9 %

27. What is the smallest percentage of cookies sold?                           
  Shortbread / Trefoils   =  9 %

Name_______________________________  Date: _____________   Per: ____________

Study Guide for Chemistry of Materials. Pt. 2

Instructions: This study guide includes material to study but does not reference every question that will be on the test.

Are you thirsty yet?  Look at this pie chart of how we use our water:  http://www.epa.gov/watersense/our_water/water_use_today.html

28. How much of our water do we get from the faucet?

 15.7%

29. What uses of water are the two largest percentages?                                          _Toilet_____  = _26.7____%           

Clothes Washer  = _21.7_%           

Study the following pie charts carefully and answer the questions given alongside it:

30. What component of the human body has the highest fraction?                                                           .  Hormones & Enzymes                                         Convert it to percent:                                                                               40%

31. What would be the mass of water in the body of a person weighing 50 kg (110 lbs.)?

                    35 kg (77 lbs.)

32.  In the human body, what part is made of neither bones nor skin (hint: upper disk)?

               Hormones & Enzymes, Muscles:  40% + 33.3% = 73.3%

33. Your friend says you should buy a certain game system that uses uranium batteries.  They are cheaper and last longer but they are radioactive and are not as safe as systems that use regular batteries.  Also, when they are used up, you have to dispose of them in special dumps or they will poison the water. What model should you buy?  Discuss the tradeoffs.

Make a choice. Use the word "trade-off". Discuss advantages and disadvantages (as many as you can find) of the choice you made. Ex: 

"I would not choose the system with uranium batteries. Disadvantages include that uranium batteries are radioactive, and they must be taken to special dumps for disposal. These disadvantages outweigh the advantages that uranium batteries are less expensive, and last longer, than other batteries.  This is why I would not choose a system with radioactive batteries. 

34. When you dilute a substance, what are you doing to it?

Adding water

35. If you dilute a solution enough that you can no longer see the color:

1. Has all the solute been removed?                                                           __No_

b.    How can you tell if solute is still in the solution? 

Use an indicator such as ammonia_

3. What did we do in our lab that showed that a solution contained copper even when we could no longer see the color in the diluted solution?

Added ammonia to indicate if there was any copper in solution that was at too low a concentration for us to see with our eyes.

4. What can you conclude about the chemical that we added?

_ Adding ammonia indicates if there was any copper in solution that was at too low a concentration for us to see with our eyes

5. What Law tells you that the solute was not simply destroyed?

Law of Conservation of Matter

36. What does dilution do to the concentration of a solute or toxin in liquid waste?

Adding water reduces the concentration

37. What is serial dilution? 

Adding water over and over (in a series of steps) to reduce the concentration of a toxic chemical to within legal or environmental limits

38. Fill out the following table connecting ppm (parts per million) to fractions:

1 ppm     ex:	1__       .                     1,000,000
10 ppm	10__       .                     1,000,000
100 ppm	100    1,000,000
1,000 ppm      ex:	1,000     .   1,000,000
10,000 ppm	10000    .   1,000,000
100,000  ppm	100,000  .   1,000,000

Test Thursday.
Study guide part 2 due tomorrow.
Element Project due on on Thursday.

Homework: Analysis Questions 1-6, p. B-63

Study Hall after school today. Brief discussion of advantages and for how to form study groups

2nd period Students who did not do their homework (Unit Test Study Guide Part 1) have lunch detention today and tomorrow. 





Announcements - 

REPORT CARDS -- They will go home on Friday, February 7. The Honor Roll/Learner Profile celebration will be after February vacation.

Announcements - 

FOOD DRIVE -- Rippowam is participating in the district wide canned food drive. The collector is in the main office. Please bring all canned good items to the office by February 12.

Spirit Week - Have your kids dress to the theme of the day!
Monday Pajama day
Tuesday 80's day
Wednesday. Color war. Each grade has a color...8th grade is blue. I will ask Dan about 6th
Thursday twin day
Friday student vs staff basketball game

Rippowam Drama Bake Sale

Monday, February 10 from 2-3

Annie Auditions - Start today. Please see the attached form.