1. What is one of the oldest tests in a chemist’s toolbox? 2. Each element essentially has its own when viewed through the new device
making use of a prism called a .
3. This element was first found on the sun because of the use of the spectroscope.
4. is credited for bringing order to the unruly nature of all the known elements at the time.
5. At the end of the 1860”s how many different scientists detected a hidden order to the elements?
6. What was the publication date of Mendeleev’s first two chapters of his second volume?
7. Mendeleev likens the problem of the elements to his favorite card game called .
8. What two elements crystallized Mendeleev’s thinking about the order which alluded him?
and
9. Mendeleev not only left blanks in his periodic table, but also suggested for
those elements.
10. “The laws of nature to do not permit .