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Mystery of Matter Part 2: Unruly Elements

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Last updated 23 days ago
10 questions
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1
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1

Watch the video using the link below. You may not have enough time to finish the video and that is ok. Just get as far as you can.

https://drive.google.com/file/d/1tZBcbFtRvCeR1v-kakj35hbHnMRzIzh8/view


The questions are in chronological order.


Question 1
1.

Why did the “flame test” become less and less useful as time went on?

Question 2
2.

What element was discovered by pointing a spectroscope toward the sun?

Question 3
3.

In the mid 1800’s, one of the theories regarding matter stated that each element…

Question 4
4.

The scientists of this time used various models to organize the elements, but they all recognized that their elemental properties…

Question 5
5.

What did Mendeleev work on that “forced” him to come up with the basic structure we know today as the Periodic Table of Elements?

Question 6
6.

How did Mendeleev begin sorting the elements?

Question 7
7.

What was Mendeleev able to do once he started laying out the table?

Question 8
8.

A scrap piece of paper was found from the morning of the trip he was supposed to make, showing how he would list the elements, scribble them out, move them around and trying various arrangements.  What should this reinforce to us as people who desire to learn more about the world?

Question 9
9.

What was Mendeleev able to do when Gallium was discovered by another scientist?

Question 10
10.

What were the new group of elements called that would not interact with any other elements; that ended up being an entirely new column of elements?