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