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J.J. Thomson developed this model of the atom.
What is the Plum Pudding/Chocolate Chip Cookie Model?
These two subatomic particles exist in the nucleus of the atom.
What are the protons and neutrons?
This number on the Periodic Table tells you how many protons are in an atom.
What is the atomic number?
Isotopes of an atom vary in this subatomic particle.
What is a neutron?
This scientist developed the Planetary Model of the atom.
Who is Niels Bohr?
An atom becomes this when it gains or loses electrons.
What is an ion?
This number on the Periodic Table tells you how heavy an atom is.
What is the atomic mass?
Hydrogen-1 and Hydrogen-2 are considered this.
What is an isotope?
John Dalton used this to develop the first modern atomic theory of the atom.
What is scientific evidence?
These subatomic particles do not have any mass and do not contribute to the atomic mass of an atom.
What are electrons?
If an atom is neutral, the atomic number on the periodic table will tell you the number of these two subatomic particles.
What are protons and electrons?
Carbon-12, Carbon-13, and Carbon-14 have different numbers of neutrons, but they have the same number of this subatomic particle.
What is a proton?
This experiment proved that the nucleus contains a densely packed region composed of positively charged protons.
What is the Gold Foil Experiment?
This subatomic particle determines the type atom.
What is a proton?
This formula will help you solve for the number of neutrons in an atom.
What is Atomic Mass - Atomic #?
What is percent abundance?
These two scientists concluded that electrons do not just simply revolve around the nucleus of the atom in rings, but instead, exist in orbitals/clouds and are unpredictable.
Who are Schrodinger and Heisenberg?
Electrons exist in energy levels that occupy these of an atom.
What are orbitals?
The atomic masses on the Periodic Table have decimal places because of these variations of atoms that exist in nature.
What are isotopes?
To double check your math regarding isotopes and average atomic mass.
What is checking your answer against the Periodic Table?