Discovering the Atom
Defined as an uncuttable or indivisible part of matter
The Atom
This subatomic particle has a positive charge
Proton
The letters assigned to each element on the periodic table
Chemical symbol
H
Hydrogen
This holds subatomic particles in the center of an atom
Nucleus
Year first MODEL of the atom was created
Early 1800s / 1803
This subatomic particle has a neutral charge
Neutron
The numbers on the periodic table that identify the element are called this
Atomic Number
C
Carbon
These are the two subatomic particles in the center of the atom
Protons, Neutrons
Person who came up the theory that an uncuttable matter existed
John Dalton
This subatomic particle has a negative charge
Electron
This number is usually found rounded to the thousandths place on the table
Atomic Mass
He
Helium
These orbit around the center, from varying distances
Electrons
Physicist who determined that we can't predict the EXACT location of electrons at any given time
Erwin Schrodinger
This subatomic particle is the lightest of the particles
Electron
This is how many elements are on the periodic table
118
Element #11
Sodium
This is the number of electrons that can orbit in the first shell
2
Originally proposed the idea of the atom
Democritus
These two subatomic particles are the heaviest of the particles
Protons and Neutrons
How can you use atomic mass to find the number of neutrons
Subtract the atomic number or protons/electrons
Element #19
Potassium
This is what happens if a shell can’t hold more electrons (full shell)
They go into the next shell