1. ORGANIZING THE ELEMENTS Chapter 5.1

2. THE IMPORTANT QUESTIONS WHY DID WE NEED TO ORGANIZE THE ELEMENTS?! HOW DID MENDELEEV ORGANIZE THE ELEMENTS? WAS WHAT HE DID EVEN USEFUL TO ANYONE?!

3. In the 1860s, Mendeleev needed a way to organize 63 elements in the textbook he was working on to use with his chemistry students. He discovered a way to organize them by playing his FAVORITE card game.

4. SOLITAIRE!!!!

5. SOLITAIRE RULES BASICALLY, THE PLAYER TRIES TO SORT A DECK OF CARDS BY SUIT AND VALUE

6. THIS IS THE MODEL FOR MENDELEEV’S PERIODIC TABLE IN ONE VERSION, THE PLAYER MUST PRODUCE AN ARRANGEMENT IN WHICH EACH SUIT IS ORDERED FROM ACE TO KING. How did Mendeleev organize the elements in his periodic table?

7. ROWS ARE HORIZONTAL COLUMNS ARE VERTICAL How did Mendeleev organize the elements in his periodic table?

8. MENDELEEV ARRANGED THE ELEMENTS INTO ROWS IN ORDER OF INCREASING MASS SO THAT ELEMENTS WITH SIMILAR PROPERTIES WERE IN THE SAME COLUMN. How did Mendeleev organize the elements in his periodic table? WITHIN A COLUMN, THE MASSES INCREASE FROM TOP TO BOTTOM. MENDELEEV’S CHART WAS A PERIODIC TABLE

9. PROBABLY ON THE TEST….. How did Mendeleev organize the elements in his periodic table? A PERIODIC TABLE IS AN ARRANGEMENT OF ELEMENTS IN COLUMNS, BASED ON A SET OF PROPERTIES THAT REPEAT FROM ROW TO ROW.

10. YOUR BOOK SHOWS OVER 100 ELEMENTS ON THE PERIODIC TABLE. How did Mendeleev organize the elements in his periodic table? MENDELEEV DID NOT MAKE COMPLETE TABLE OF THE ELEMENTS BECAUSE MANY ELEMENTS HAD NOT YET BEEN DISCOVERED. REMEMBER!!: WHEN HE STARTED THERE WERE ONLY 63 ELEMENTS.

11. NO TRUST?! Was what Mendeleev did useful to anyone? SOME SCIENTISTS DID NOT IMMEDIATELY ACCEPT THESE PREDICTIONS

12. A COLUMN IS OFTEN CALLED A GROUP ON THE PERIODIC TABLE Was what Mendeleev did useful to anyone? MENDELEEV NAMED MISSING ELEMENTS AFTER ELEMENTS IN THE SAME GROUP FOR EXAMPLE, EKA-ALUMINUM WAS NAMED AFTER ALUMINUM

13. HE GREATLY HELPED SHAPE THE PERIODIC TABLE THAT WE USE TODAY! Was what Mendeleev did useful to anyone? THE CLOSE MATCH BETWEEN MENDELEEV’S PREDICTIONS AND THE ACTUAL PROPERTIES OF NEW ELEMENTS SHOWED HOW USEFUL HIS PERIODIC TABLE COULD BE.