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Development of Atomic Theory
Development of Atomic Theory
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Development of atomic theory and revision of atomic number
Flashcards
11 cards
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Questions
11
Answers
1
How many protons does Iron consist of?
81.85
55.85
29.85
26
2
Who proposed the 'plum pudding' model of an atom?
Democritus
Dalton
Rutherford
JJ Thomson
3
In what year did Rutherford discover the existence of protons?
1915
1800
1922
1919
4
Who discovered neutrons?
J.Chadwick
JJ Thomson
E Rutherford
N.Bohr
5
Dalton proposed that atoms can be created or destroyed during chemical changes....
True
False
6
The atomic number represents the number of what?
Electrons
Protons
Neutrons
Atoms
7
Who was the first person to theorise the atom?
Democritus
MacMunnicus
Aristotle
Dalton
8
Thomson discovered the electron using a....
Electron Microscope
Light microscope
Binoculars
Cathode ray
9
Which answer represents the atomic number?
4
2
6
He
10
Which of these did E.Rutherford NOT discover?
Nucleus is small
Nucleus is positive
Neutrons are in the nucleus
Electrons are separate from the nucleus
11
Who stated that "
atoms of a given element are identical"
?
Heisenberg
J. Dalton
JJ Thomson
E. Rutherford
