History
Atomic Structure
Groups
Periodic Table
Random
100
This person first named the atom.
Who is Democritus?
100
Subatomic particle that has a positive charge.
What is a proton?
100
This group will not combine with other elements because they are stable with a complete outer shell of electrons.
What are the Noble Gasses?
100
The vertical columns on a periodic table.
What is the Group?
100
Krypton has _______ protons.
What is 36?
200
The first person to work on the periodic table.
Who is Mendeleev?
200
The charge of a neutron.
What is neutral or no charge?
200
Name the group of the most reactive metals.
What are the Alkali Metals?
200
The period number tells you.
What is the number of energy shells?
200
Two isotopes of Magnesium are Mg-24 and Mg-26. Identify how these isotopes are different.
What is the number of neutrons?
300
The person who says the electrons travel in fixed orbits around the nucleus.
Who is Bohr?
300
The smallest particles that make up protons and neutrons.
What are quarks?
300
Name the most reactive nonmetals.
What are the Halogens?
300
Determines the identity of the element.
What is the atomic number?
300
Nuclear form of notation for an isotope of Carbon with 7 neutrons.
What is 13C?
400
An experiment conducted by Rutherford to develop his nuclear model.
What is the Gold Foil Experiment?
400
The negatively charged area around the nucleus, this is also where the atom's volume is located.
What is the electron cloud?
400
Group that has 2 valence electrons.
What are the Alkaline Earth Metals?
400
Mass number is equal to protons plus ________.
What is a neutron?
400
Properties of Metalloids.
What is
Solids
Semiconductors
Physical properties like metals
Chemical properties like nonmetals
500
Arranged the elements on the periodic table by atomic number.
Who is Moseley?
500
The center of the atom.
What is the nucleus?
500
This element is the only one in its group that belongs with the group # but NOT included in the group name because it has a different classification.
What is Hydrogen?
500
This element has 4 energy levels and is one of the Alkaline Earth Metals.
What is Calcium?
500
A neutral atom has ______ charges equal to ______ charges.
Positive , Negative