Atomic Models
Which person proposed the idea of "Atomos?"
Democritus
What did Ernest Rutherford's experiment suggest?
The positive mass of the atom is concentrated in a region called the nucleus.
What is the charge of a proton?
+1
What is an isotope?
Atoms of the same element with different masses.
What is Atomos?
Proposed particles that make up matter, which are tiny and indivisible.
What was Ernest Rutherford's famous experiment?
Gold Foil Experiment
What is the charge of an electron?
-1
What is the mass number?
The sum of the protons and neutrons in the nucleus.
Cathode Ray Tube Experiment
What did Niels Bohr suggest regarding the atom?
Electrons follow orbits around the nucleus like planets around the sun.
What is the charge of a neutron?
Neutral (0 charge)
How many electrons does a neutral isotope have?
The same number as the number of protons
What did the data from JJ Thomson's experiment suggest?
Atoms are positive masses with negatively charged electrons embedded into them.
What is the lowest energy state, that an electron can occupy called?
Ground State
What particles are located outside the nucleus?
Electrons
Provide information for the following: Aluminum-27
Protons and electrons = 13
Neutrons = 14
Mass Number = 27
Atomic Number = 13
Isotope Notation = 2713 Al
What was the name of JJ Thomson's atomic model?
Plum Pudding Model
What is the highest energy state that an electron can occupy, called?
Excited State
What particles are located inside the nucleus?
Protons and neutrons
You have a neutral isotope with 36 electrons and a mass number of 41. Provide the additional information for this isotope.
Atomic Number = 36
Protons = 36
Neutrons = 5