Who is Democritus?
What are Protons?
This group will never combine with any other element naturally.
What are Noble gases?
The period number tells you this information.
What is number of energy levels (shells)?
The number of protons and neutrons is represented by this.
What is Mass number?
First-Person to build and work on the Periodic Table
Who is Mendeleev?
The charge of a neutron
What is 0 (Neutral)?
The mast reactive metals.
What are alkali metals?
The semi-conductors on the periodic table are classified as this.
What is Metalloids?
Isotopes are atoms of the same element with different numbers of this.
What is Neutrons?
Came up with the model that says electrons travel in fixed orbits around the nucleus.
Who is Bohr?
The particles that make-up protons and neutrons.
What are Quarks?
What are Halogens?
This number can be used to determine the identity of an element.
What is the atomic number?
This noble gas does not have 8 valence electrons.
What is Helium?
The experiment did Rutherford use to develop his Nuclear Model.
What is the Gold Foil Experiment?
How many electrons can be held in the first energy level?
What are 2?
All elements in this group have 2 valence electrons.
What are alkaline earth metals?
Hydrogen's most common isotope has _____ protons and ____ neutrons.
What are 1 proton and 0 neutrons?
Draw a Bohr Model for the most common isotope of Sulfur
Explain JJ Thompson's Plum Pudding Model.
The atom is positively charged with negative particles embedded throughout.
The mass of an atom is in the _______ which contains the _______. The volume of the atom is in the _________ where the ______ are.
Where are the nucleus, protons and neutrons, electron cloud, and electrons?
This element is the only one in its group that belongs with the group number but not with the group name.
What is Hydrogen?
This element has 4 energy levels and is one of the rare earth metals.
What is Scandium?
Write the two types of isotope notation for the most common form of Sodium in nature.
What is Sodium-23 and 23Na?
Describes the 3 forces that hold the nucleus together.
Attractive force between the (+) nucleus and (–) electron cloud - Holds the atom together
Repulsive force between (–) electrons - Gives the electron cloud volume
Repulsive force between (+) protons - An insane amount of energy holds the nucleus together