This model thought that atoms were like smooth, hard balls that could not be broken into smaller pieces
What is the Dalton Model?
100
The electrons that in the highest energy level of the atom and held most loosely
What are valence electrons?
100
The number of protons in an atom
What is atomic number?
200
The part of the atom that has no charge
What is the neutron?
200
Several elements that lie along a zigzag line between metals and nonmetals. Depending on conditions these elements behave as either metals or non metals.
What is metalloid?
200
This scientist discovered that atoms contained negatively charged particles
Who is J.J. Thomson?
200
This is a way to depict the number of valence electrons in an element
What is electron dot diagram?
200
The average mass of the isotopes of an element found in nature
What is atomic mass?
300
The negatively charged part of the atom
What is the electron?
300
These elements are located in Group 18 and are non-reactive
What is noble gas?
300
According to this model, the atom was mostly empty space. The electrons moved around a small positively charged nucleus in the center of the atom
What is the Rutherford Model?
300
This is when an atom reacts and becomes chemically combined with another atom.
What is a chemical bond?
300
The person who created and organized the periodic table
Who is Mendeleev?
400
This is created when we have both the protons and the neutrons
What is the nucleus?
400
These elements are located in Group 17 and gain just one more electron in order to gain stability
What is halogen?
400
A revised version of the Rutherford Model, this model showed that electrons could only have specific amounts of energy, leading them to move in certain orbits
What is Bohr's Model?
400
The number of valence electrons in an atom of an element determines this
What are the properties?
400
A representation of an element usually consisting of one or two letters.
What is the chemical symbol?
500
The location of the electrons in the atom
What is the orbit?
500
These elements are the most reactive group of atoms and are found in Group 1
What are the alkali metals?
500
The nucleus, which contains both protons and neutrons is surrounded by a cloud-like region of electrons is represented by this model.
What is the Modern Atomic Model?
500
These elements make good conductors of electricity.
What is a metal?
500
The horizontal rows that the periodic table is organized in