Elements and Symbols
Parts of an Atom
Periodic Table
Scientists
Properties of Elements
100
What is the name of this element? H
Hydrogen
100
The charge of a electron.
What is negative.
100
The horizontal rows on the periodic 
What are periods.
100
Discovered the Periodic table.
Mendeleev.
100
Good conductors of heat and electricity, shiny, located in the middle and to the left on the periodic table.
Metals.
200
What is the name of this element? Al
Aluminum
200
The charge of a neutron.
What is neutral.
200
Vertical columns in the periodic 
What are groups.
200
Discovered that electrons follow an orbit.
Who is Bohr.
200
Good conductors of electricity, located in the middle of the periodic table, magnesium is an example.
Alkaline Earth Metals.
300
What is the name of this element? Sn
Tin
300
Forms when an atom gains or loses 
What is an ion.
300
Elements are grouped vertically based on____?
What is properties.
300
Discovered the proton.
Who is Rutherford.
300
Less reactive metals, includes iron, nickel, and gold.
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Transition metals.
400
What is the name of this element? Na
Sodium
400
The small dense center of an 
What is the nucleus.
400
Elements are in the same group when they are in the same____?
Family.
400
Atoms of the same element have the same mass.
Dalton.
400
Elements in group 18.
Noble gasses.
500
The atomic number of oxygen?
8
500
Subatomic particles that are located the farthest away from the nucleus.
What are valence electrons.
500
Located on the bottom row of the periodic table, very unstable.
What are Actinides.
500
Discovered the electron.
Who is J. J Thomson.
500
The first period below the periodic table.
Lanthanides.