Atoms
Elements
Periodic Table
Atomic Theory
Miscellaneous
100
The protons and neutrons are located in _______________.
The Nucleus
100
This element has an atomic number of 1.
Hydrogen
100
Atoms in the periodic table are arranged by their _________.
Atomic number (number of protons)
100
Who is credited with the 'invention' of the Atomic Theory?
Leucippus and/or Democritus
100
How many neutrons does a Hydrogen (H) atom have?
None!
200
This particle has a positive charge.
Proton
200
This element has an atomic mass of ~26.982.
Aluminum
200
Horizontal rows of the periodic table are called ________.
Periods
200
Draw what the earliest model of the atom looked like.
The Billiard Ball Model (just a solid sphere)
200
What is the maximum number of energy levels known to exist?
Seven (7)
300
This particle has no charge/neutral.
Neutron
300
This element has an atomic number of 26.
Iron
300
Vertical columns of the periodic table are called _________.
Groups
300
J.J. Thomson discovered which subatomic particle with his experiment involving a vacuum tube and a magnet?
The Electron
300
Atoms with the same number of protons & electrons but different numbers of neutrons are called ____________.
Isotopes
400
This particle is outside the nucleus.
Electron
400
This element has 18 protons.
Argon
400
Elements in the same period have the same number of what?
Electron energy levels (orbitals or shells)
400
According to the Bohr model, electrons 'orbit' the nucleus in specific ________.
Energy Levels or Shells
400
The Lewis Dot Diagram only shows what kind of electrons?
Valence Electrons
500
The nucleus has this charge.
Positive
500
This element has an atomic mass of 23 when rounded.
Sodium
500
Most elements of the periodic table are classified as types of _________.
Metals
500
The current model of the atom is called the ___________.
Electron Cloud Model
500
In general, all atoms want to have this many electrons in their outer shell.
Eight (8)
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