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Atomic Structure and History
Atomic Structure and History
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The make up of an atom and the scientists behind its discovery
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1
First modern scientist to develop the theory of atoms
Humphrey Davy
Michael Faraday
John Dalton
Joseph Priestly
2
When at atom gains an electron it:
Becomes more positive
Becomes more negative
Charge does not change
3
What is the symbol for wavelength?
λ
W
v
C
4
The number of protons in an atom of Silicon is:
14
42
28
5
The color of a strontium flame is
Red
Orange
Yellow
Blue/green
6
JJ Thomsons model was known as the:
Blueberry muffin model
Boiled egg model
Plum pudding model
Chocolate chip model
7
Meaning of the Greek word atomus
Universal
Unbreakable
Indivisible
Microscopic
8
Dalton proposed that all atoms were:
Were made of indeterminable shapes
solid spheres of matter
random shapes of matter
hollow cubes of matter
9
The color of a sodium flame is:
Red
Purple
Blue/green
Orange/yellow
10
The number of neutrons in the nucleus of Potassium is:
20
19
39
21
11
Erwin Shrodinger was able to calculate
The atomic number of an element
The mass number of an element
The number of electrons in an atom
The shapes of electronic orbitals
12
The scientist who discovered the neutron was:
James Chadwick
Werner Heisenberg
Enrico Fermi
Chad Jameswick
13
Energy level can be abbreviated using the letter:
n
E
e
q
14
Identify the part of the Bunsen burner indicated by the arrow A.
Base
Collar
Gas inlet
Chimney
15
What precious metal was used in Rutherford's experiment?
Gold
Platinum
SIlver
Bronze
16
Ernest Rutherford did NOT discover the:
Proton
Nucleus
Neutron
Atoms are made of mostly empty space
17
Werner Heisenberg is known for his Uncertainty Principle which tells us you cannot know:
The number and change of electrons
The velocity/speed and position of an electron
The position and number of electrons
The velocity and charge of an electron
18
If Magnesium has 4 isotopes, Mg-11 (17%), Mg-12 (19%), Mg-13 (46%) what is the abundance of the final isotope: Mg-14?
72%
27.3%
Not enough information
18%
19
The energy level that an electron starts on is known as the:
Excited state
Promoted state
Photon state
Ground state
20
The speed of light is 3.0 x 10
6
True
False
21
What particles did Rutherford fire at the gold foil in his experiment?
Electrons
Gamma radiation
Beta particles
Alpha particles
22
The energy emitted by a photon with a frequency of 6.615 x 10
14
Hz is 4.387 x 10
-19
Hz
False
True
23
Niels Bohrs' model of the atom is known as the:
Solar System Model
Rotary Model
Planetary Model
Orbital Model
24
What is the frquency of light emitted if the wavelength is 400nm (4 x 10
-7
) m Light = 3.0 x 10
8
m
3.0 x 108m
2.4 x 1012 Hz
Not enough infomation
7.5 x 1014 Hz
25
Different distance between the energy levels of each element means.....
Different number of electrons are moving
Electrons fall at random intervals
Different wavelengths of light are emitted
Some electrons will stop falling halfway down
26
JJ Thomson discovered the:
Proton
Neutron
Electron
Atom
27
If Boron has 2 isotopes, B-10 and B-11, which isotope is the most abundant?
B-10
B-11
Both the same
Not enough information
