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Atomic History
Atomic History
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Atomic History
Flashcards
16 cards
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Questions
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Answers
1
Gold Foil Experiment Concluded that there is a tiny dense region of positive charge.(nucleus)
Thomson
Bohr
Rutherford
Dalton
2
What isotope is this?
O-14
O-14
C-12
C-14
3
Believed the earth was made of 4 elements or a combination of them.
Bohr
Democritus
Early Greeks
Dalton
4
Which isotope of aluminum is most common?
Al-14
Al-27
Al-13
Al-25
5
What element is this?
phosphorius
Silicon
Oxygen
Lithium
6
How many neutrons does this atom of Fluorine have?
33
10
19
16
7
Discovered that atoms have smaller particles called Electrons
Democritus
Thomson
Rutherford
Bohr
8
Believed Electrons are found in Energy Levels and have predictable orbits like planets around the sun
Bohr
Democritus
Dalton
Rutherford
9
What is wrong with this drawing of B- 11?
Wrong placement of electrons
Wrong number of electrons
Wrong number of protons
Wrong number of neutrons
10
Father of Modern Chemistry for his Atomic Theory
Democritus
Dalton
Bohr
Thomson
11
The atomic mass = Protons + ____________
Electron Energy Levels
Varvons
electrons
neutrons
12
The mass number minus the atomic number = the number of __________
Protons
neutrons
electrons
none of these
13
How many neutrons does B-9 have? (Element #5
4
5
9
6
14
Associated with term "atomos" which is Greek for uncuttable.
Thomson
Democritus
Bohr
Rutherford
15
Which particle Identifies the element?
proton
neutron
electron
Zarubaon
16
Electrons location is described by mathematical probability.
Bohr
Dalton
Modern Model
Rutherford
