Vocab
Models
Masses of Atoms
The Periodic Table
Elements and their Properties
100
A positively charged subatomic particle
What is a proton?
100
The first proposed atomic model that suggested all elements consisted of tiny, solid particles that cannot be subdivided.
Who is Democritus?
100
The way to determine the number of protons in a specific element.
What is the atomic number?
100
The group number for Strontium.
What is group 2?
100
Elements that are shiny, malleable, ductile, and good conductors.
What are metals?
200
Where most of the mass of an atom is located.
What is the nucleus?
200
Todays accepted atomic model.
What is the electron cloud model?
200
The formula for calculating the number of neutrons in an atom.
What is (atomic mass - protons)?
200
The number of electrons that can fit in the second energy shell.
What is 8 electrons?
200
All elements in group 1 of the periodic table.
What are alkali metals?
300
Atoms of the same element that have different number of neutrons.
What is an isotope?
300
Solar system model that can represent energy levels being filled by a specific number of electrons.
What is Bohr's Model?
300
The charge on a Calcium atom that loses 3 electrons.
What is 3+?
300
The region of the periodic table that Arsenic resides in.
What are metalloids?
300
The first row of inner transition elements. Atomic numbers 90-103.
What are the lanthanides?
400
Vertical columns in the periodic table that tell you the number of valence electrons of the elements in that column
What is a group?
400
The idea that the positive charge of an atom remains in the center atomic nucleus that is surrounded by electrons.
What is Rutherford's model?
400
The number of neutrons in the isotope potassium-40.
What is 21 neutrons?
400
The electron dot diagram for Aluminum.
What is 
400
Elements that conduct electricity under certain conditions.
What are semiconductors?
500
It forms when a positive ion (metal) combines with a negative ion (nonmetal).
What is an ionic bond?
500
A Bohr model that represents the element Neon.
What is 
500
Lithium and bromine form an ionic bond, this is the number of electrons Bromine gains and lithium loses.
What is 1 electron?
500
The electron dot diagram for Selenium
What is 
500
When two nonmetals share electrons and form a bond.
What is a covalent bond?