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21 questions
The elements along the staircase are called
metals
nonmetals
metalloids
noble gases
Elements which are shiny, conduct electricity and heat are called
metal
nonmetal
metalloid
nonexistent
Who invented the Periodic Table?
Mendeleev
Bohr
Lewis
Democritus
Hydrogen is a:
Alkali metal
Metalloid
Non-metal
Noble gas
The Russian scientist who created one of the first periodic tables by using atomic mass was:
Bohr
Rutherford
Mendeleev
Thomson
The elements to the right of the staircase line are ...
Metals
Non metals
Metaloids
Crustaceans
The elements to the left of the staircase line are ...
Metals
Non metals
Metaloids
Crustaceans
The metals and non metals are separated on the periodic table by ...
Dotted lines
Commas
Yellow boxes
Staircase line
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