Winding Down

One more science video till Christmas!  But first, make sure all your papers are in order and everything up-to-date and finished/watched and packed away in your notebook -- don't lose those atom cards! Bring them Thursday, we will go over how to make predictions, as well as returning your tests.  Quite a few of you have not left a prediction in the comments, which was part of last week's homework, so do that.  And please leave your initials or first name so I know who you are.

And here is the link to the 30 minute video:
http://www.learner.org/courses/chemistry/video/vidbyunit_4.html

There will be homework after New Year's to prepare for the first class of the year.

Friday's homework

Hopefully, you should have completed your Chapter 18 test yesterday, and put that in your binder to turn in on Monday.  It would be cheating to change the answers now.  Jus' sayin'. Hope you enjoyed the amazing rain.  My street was completely flooded for a while, and the park was a little lake. Quite fun.

Today's homework:
1. Read and study Chapter 19.1 Stability in Bonding, and highlight everything you think is important.  --vocabulary, major concepts --and be able to answer all the questions asked in picture captions.  Study the pictures carefully!   KEY CONCEPT - STABILITY  means stay-bility ...

----And here is a worksheet to help you ---https://drive.google.com/file/d/0B07s3-bcUr7tb0dpSlVKdlZjdHc/view?usp=sharing  {to check your answers, see link below.}

2. Atomic Trading Cards page 579 -- this is what we started in class.  In your SJ,predict which pairs of elements might combine to form stable compounds.  Re-draw those Rutherford-Bohr diagams  in pairs which you predict will combine.  (Like sodium and chlorine) -- Can you find 10 (at least)? In the comments below, write in a combination that you predict will bond to each other.  Everyone different.
  And here is an "answer sheet" --This is what your cards should look like.

3.and some videos: take notes//illustrate in your SJ: (like a page for each video seems right, because pictures take a lot of space)

These videos are so good, you might want to watch them again!

and you can check your worksheet answers here: https://drive.google.com/file/d/0B07s3-bcUr7td2pLMWptbVV3UmM/view?usp=sharing

DID YOU LEAVE YOUR COMMENT?  [SEE #2]

TEST: Thursday!

I've changed my mind twice, but now it's back to Thursday...so homework is to complete the cards which we started in class,  do the handout from class with the electron dots, and most of all...

STUDY FOR THE TEST ON CHAPTER 18!!!

1. Read again the 3 sections, and UNDERLINE EVERYTHING YOU THINK IS IMPORTANT... vocabulary, charts, pictures, be able to answer all end of section questions.
2. Work through the study guide, pages 568-571. [for studying, not to turn in as homework]
3. Rewatch some of the videos from the blog page. also http://www.bozemanscience.com/a-tour-of-the-periodic-table



If you missed class, or would like a clearer explanation than I gave :) >>>>>http://www.bozemanscience.com/atoms-the-periodic-table  and here:

If you missed class, or need a reminder on how to do Rutherford-Bohr models, here is a short video: {in class we drew the first 20 elements according to the model.  These models show where the electrons go.]

internet interupy...

My internet was down today so I sent a message to your moms, telling the homework.

Documentary, the 2nd of 3, Chemistry a Volatile History. THE ORDER OF THE ELEMENTS  http://www.brainpickings.org/2011/10/14/chemistry-a-volatile-history-bbc/  58 minutes.

Also, we will have a test next Thursday or the following Monday on the chapter and homework covered in Chapter 18.  Study and underline in your books everything you think you should remember.

Periodic Puzzle

So glad to be back at class today!  I appreciated your focus, and I think this time between now and Christmas will be interesting and productive.

First, if you did not yet assemble (glued or taped together) your own periodic table out of the cards and paper from class, do so now and if you have to, use a printed periodic table to help you, and then find the patterns.  COPY AND  ANSWER THESE QUESTIONS ON THE BACK OF YOUR "TABLE", AND TURN IN AS HOMEWORK ON THURSDAY:

1. Which of the properties on the element cards is the most appropriate for sequencing the elements?
2. Are there exceptions to the order of atomic mass? where?
2. Which properties are periodic?  Explain.
3. At what point do the properties appear to repeat themselves?
4. Which properties are common to elements on the left side of the periodic table?  The right side?
5. What was your "mystery element", and what properties did you predict it would have?  Were you correct?
6. On your taped together periodic table, write the element symbols on each card. [H, He, Li...etc.]
7. Hydrogen is the first element; do you think it should be in the first column?  explain.


VIDEO DOCUMENTARY TO WATCH:
Here is the first of three in a series, a documentary on the discovery of the elements. It is excellent, but it is an hour long, so you may want to get popcorn and chromecast it on your TV, if you have that available. Seriously, your whole family might enjoy it together! http://www.brainpickings.org/2011/10/14/chemistry-a-volatile-history-bbc/   Watch just the first one, DISCOVERING THE ELEMENTS.  [The second one, The Order of the Elements, will be homework for Friday, so if you'd rather get that done early, feel free.]
Taking notes on this video would be just jotting down the names of the scientists and what they discovered, and the year.