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Atomic Theory and Subatomic Particles Flashcards | StudBud
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Atomic Theory and Subatomic Particles
Atomic Theory and Subatomic Particles
15 terms
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atomic theory and subatomic particles #chemistry
Flashcards
15 cards
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Questions
15
Answers
1
Which isotope is likely to be most abundant for oxygen?
0-15
0-16
0-8
0-14
2
What has more neutrons? C-13 or N-14?
C-13
Not enough infomation
N-14
They are equal
3
What is the mass number of a potassium with 21 neutrons?
19
40
20
21
4
Which of the following is
not
a conclusion made during the gold-foil experiment?
The nucleus is positively charged
Neutrons are in the nucleus and have no charge.
The nucleus is very dense
Atom is mostly empty space
5
Who is known for his Atomic Theory?
Democritus
Millikan
Dalton
Thomson
6
Two isotopes of the same element will always have the same ______?
mass number
atomic number
number of electrons
number of neutrons
7
How many electrons does Ca-41 have?
20
21
19
41
8
What is not included when calculating the mass of an atom?
electrons
nucleus
neutrons
protons
9
What is the relative mass of a neutron?
0
too small to measure
-1
+1
10
How many protons does N-13 have?
9
7
8
6
11
The word atom comes from the Greek word "atomus". What does it mean?
atom
small
one
indivisible
12
Who is known for using this apparatus for his research on electrons?
Rutherford
Millikan
Thomson
Dalton
13
Which scientist used the oil-drop experiment to find the charge of an electron?
Millikan
Dalton
Thomson
Rutherford
14
Which model of the atom is shown below?
Rutherford
Dalton
Thomson
Bohr
15
How many electrons are in a neutral atom of Vanadium?
50
51
23
24
