Discovering the Atom
Defined as an indivisible part of matter
The atom
This subatomic particle has a positive charge
Proton
Most elements on the Periodic table are given this many letters
2
H
What is hydrogen
These are the two subatomic particles in the center of the atom
What is protons and neutrons
Atoms exist in these states of matter, as well as in plasma, the 4th state of matter
Solids, Liquids, Gasses
This subatomic particle has a neutral charge
Neutron
Elements on the periodic table are numbered based on this
Atomic number or Protons
C
What is Carbon?
This is the number of electrons that can orbit in the second shell
What is 8
Technology needed to see atoms
Scanning Electron Microscope (microscope accepted)
This subatomic particle has a negative charge
Electron
This number is usually found rounded to the thousandths place on the table
Atomic Mass
He
What is Helium
The name of the electrons in the outermost shell of an atom
What are valence electrons
The number of elements that have been discovered and included on the periodic table
118
This subatomic particle is the lightest of the particles
Electron
Elements with the same number of valence electrons are grouped together this way
Atomic number 11
What is Sodium or Na
The elements that are stable are grouped together and called this
What are noble gasses
Brilliant mathematician who calculated the approximate size of an atom
Who is Albert Einstein
This subatomic particle is actually the heaviest, by the tiniest amount
Neutron
Elements with the same number of shells are grouped together this way
What is horizontally or across by row
Potassium
What is K
This is the shorthand electron configuration of potassium
What is 2.8.8.1