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What is it?
History
Electrons
Properties
Think about it
100
I am shiny, hard, can be stretched when heated and make up most of the periodic table.
What is Metal
100
This man created the periodic table in 1869
What is Dimitri Mendeleev
100
This type of electron is found in the outer shell and available for transfer or sharing
What is valence electron
100
When this is a solid, it is dull and brittle
What is a nonmetal
100
This is the only metal that is liquid at room temperature
What is mercury
200
I have properties of BOTH metals and nonmetals
What is a semiconductor
200
This is the year Germanium was discovered.
What is 1886
200
Group 1 has this many valence electrons
What is one
200
This typically is hard, dense, and not very reactive.
What is transition metal
200
This is another name for semiconductors
What is metalloids
300
This element is a shiny solid, highly poisonous, and a semiconductor
What is Arsenic
300
Henry Moseley rearranged the periodic table by this
What is atomic number
300
Halogens have this many valence electrons
What is seven
300
This group is the most reactive of the nonmetals
What is halogens
300
This chemical formula is a common example of halogens reacting with alkali metals
What is NaCl
400
This element is an alkaline earth metal found in epsom salt
What is Magnesium
400
This valley is named after an element that makes up 28% of the Earth's crust
What is silicon
400
Halogens typically react with this group
What is alkali metals
400
This group is the most reactive of the metals
What is alkali metals
400
This element is in a class by itself and acts like no other element
What is Hydrogen
500
These are man made elements, radioactive, found in glow in the dark paint.
What is Technetium and promethium
500
This person discovered Gallium in 1875
What is Paul-Émile Lecoq de Boisbaudran
500
Group 15, dependent upon valence electrons, would probably react with this group
What is Group 13.
500
These types of elements are man made to mimic natural elements
What is synthetic
500
These six elements are considered semiconductors
What is B, Si, As, Ge, Sb, and Te