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Properties
100
Helium is in this category.
What is Non-metal?
100
He discovered electrons, and experimented with electricity in glass tubes.
Who is J.J. Thomson?
100
This element has an atomic number of 56.
What is Barium?
100
Its atomic number is 27.
What is cobalt
100
This is the most reactive Alkali Metal.
What is Cesium?
200
Tin is in this category
What is metal?
200
He used rays to see if atoms would pass through gold foil or bounce off.
Who is Ernest Rutherford
200
This element has 37 protons.
What is Rubidium?
200
To the right of calcium
What is Scandium?
200
This metal is liquid at room temperature and is not Bromine.
What is Mercury?
300
Silicon is a _________.
What is a metalloid?
300
He made the five laws of matter.
Who is John Dalton.
300
This element has 59 as its atomic number.
What is Cerium?
300
Symbol is MN
What is Magnesium?
300
These metals are magnetic.
What are nickle, iron, and cobalt?
400
Group 1 is called _________.
What are alkali metals?
400
He discovered the understanding of the atomic structure and quantum theory.
Who is Niels Bohr
400
This element's atomic number is 69.
What is Thulium?
400
Has 10 neutrons
What is neon
400
This metal is a heat conductor.
What is copper?
500
The second group is ______.
What are alkaline earth metals?
500
He formulated the Periodic Law and created a farsighted version of the periodic table of elements.
What is Dmitri Mendeleev?
500
This element has an atomic number of 35.
What is Bromine?
500
This is underneath carbon
What is Silicon?
500
This is the lightest element on the periodic table.
What is Hydrogen?