TED The genius of Mendeleev's periodic table

1) Who created the periodic table as we know it today?

• 
• 
• 

2) What did Dmitri Mendeleev do that set him apart?

• He arranged all the known elements together based on their properties

• He made accurate predictions about undiscovered elements based on where they would be in the periodic table

• He created a list of all known elements

3) How many scientists have an element named after them?

• 5

• 15

• 35

• 75

4) What is the English translation for the Sanskrit word EKA?

• Periodic

• One

• Same

• Element

5) How many periodic tables have there been through all these years?

• over ten

• over fifty

• over one thousand

6) What year does the first version of the periodic table date back?

• 1863

• 1870

• 1888

9) What did the DASH (-) in the first table stand for?

• Unknown elements

• Sub-elements

• Radioactive elements

10) Based on Mendeleev's theories it is possible to know almost anything about unknown elements based on their positions on the table.

• TRUE

• FALSE

11) Which discovery proved that Mendeleev's assumptions were right?

• The discovery of Technitium

• The discovery of Gallium

• The discovery of Moscovium

12) What is Eka-Aluminum?

• Polonium

• Rhenium

• Technetium

• Germanium