Show:
History
Elements
Periodic table
100
Who created the periodic table?
What is Dmitri Mendeleev
100
What is the first element on the periodic table classified as?
What is as a gas
100
What does the atomic number stand for?
What is the amount of protons in the nucleus
200
What year was the first periodic table created in?
What is 1869
200
How many protons are in the element argon?
What is 18
200
How are the elements classified as?
What is Metals, Series, and Gases.
300
Why did the creater of the periodic table leave spaces in the periodic table? A.He left spaces in the table to write any of his ideas in. B.He left spaces in the table to leave room for anymore elements that were discovered. C.He left spaces in the table to keep all of his achievements in.
What is B.He left spaces in the table to leave room for anymore elements that were discovered.
300
How many elements are on the Earth
What is 117 elements
300
Why do they keep elements 57-70 and 89-102 out of the periodic table A.It keeps the table from being to wide. B.They skipped those elements because they were in a rush. C.They didn't want to add those elements. D.None of the above
What is A. It keeps the table from being to wide.