Greeks and Dalton
Historical Models
Quantum I
Vocabulary
Isotopes
100
What Greek philosopher came up with the idea of the atom?
Who is Democritus
100
Who created the Bohr's model?
Who is Niel Bohr
100
What principle says that everything exists as both energy and matter?
What is Wave-Particle Duality?
100
What are atoms?
What are the smallest particles of an element
100
What are isotopes?
What are atoms that have the same number of protons, but different number of neutrons.
200
What did Democritus believe atoms were?
What is indivisible and indestructible.
200
Why did Rutherford know that the atom is mostly empty space?
Most alpha particles passes straight through the atom.
200
What is Quantum?
What is the amount of energy needed to move an electron from one energy level to the next
200
What is the nucleus?
What is the tiny dense central portion of an atom composed of protons and neutrons
200
In Argon, how many protons and neutrons are in the nucleus?
What is 18 protons and 19 neutrons.
300
What did Democritus' model lack?
What is experimental support
300
What are the differences between Modern and Dalton's Atomic Theories?
Points 1 and 2: atoms are divisible and atoms of one element can have different masses.
300
What does the schrodinger equation do?
It calculates the wave of an electron of a specific energy.
300
What is the electron cloud?
What is the area where the elecrtrons can be located or found
300
What does the most common hydorgen isotope not have?
What are neutrons
400
How did Dalton transform Democritus' ideas on atoms into a scientific theory?
What is experimental methods
400
What did J.J. Thompson discover?
What is electrons
400
What is probability?
The chance of something happening.
400
What is the quantum mechanical model?
What is the behavior of electrons in atoms
400
Because isotopes of elements have different numbers of neutrons, they also have different what?
What are mass numbers
500
According to Dalton's Atomic Theory, atoms of one element are what
What is identical
500
Describe the bohr model.
The electron cloud is made up of quantized energy levels
500
Define orbital.
A space where an electron of an exact energy will probably be.
500
What are protons?
What is a positively charged particle found in the nucleus
500
Are isotopes chemically alike?
What is yes
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