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.