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Atomic Structure & Atomic Math Flashcards | StudBud
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Atomic Structure & Atomic Math
Atomic Structure & Atomic Math
21 terms
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Atoms #protons #neutrons #electrons
Flashcards
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Questions
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Answers
1
What's the Mass Number of Boron?
11
10.811
10
6
2
How many electrons does Silicon have?
14
none of the above
16
28
3
protons and neutrons are
same charge
both smaller than electrons
are opposite in charge
almost exactly same mass
4
Which is unique for every given element?
# of neutrons
# of electrons
# of protons
# of all are unique for each element
5
The actual results of the Gold Foil Experiment was that the alpha particles...
all were bounced back
went straight through
some were deflected, others went straight
6
JJ Thomson found evidence that atoms.....
have a negative charge
are the smallest particle of matter
contain negatively charged particles
have a positive charge
7
The nucleus contains
protons and neutrons
protons only
neutrons only
protons, neutrons, and electrons
8
negative subatomic particle
electron
neutron
proton
9
The Gold Foil Experiment provided evidence for what?
Negative & positive charge are spread evenly throughout atom
Gold is not as dense as previously thought
Alpha particles have a positive charge.
a dense, positively charged mass is in the center of an atom
10
Which of the following is NOT part of John Dalton’s atomic theory?
Atoms contain subatomic particles.
A compound contains atoms of more than one element.
All elements are composed of atoms.
All atoms of the same element have the same mass.
11
What's the Atomic Number of Boron?
10
5
11
6
12
Who did the Gold Foil Experiment?
Daltoon
Rutherford
Thomson
Chadwick
13
Greek philosopher who coined the word atom (tiny piece of matter that cannot be divided)
Aristotle
Democritus
Dalton
Rutherford
14
smallest subatomic particle
neutron
electron
proton
15
The number of protons always equals
atomic number
atomic mass
number of neutrons
16
How many protons does Potassium have?
20
19
39
38
17
Who provided evidence of the nucleus?
Democritus
Dalton
Rutherford
Thomson
18
The model known as the planetary model was devised by
Democritus
Thomson
Bohr
Rutherford
19
How many Neutrons does Boron have?
6
5
11
10
20
In the Gold Foil experiment, it was expected that the alpha particles would...
some would be deflected
all would bounce back
continue to go straight
21
To find the number of neutrons, you would subtract
atomic number from mass number.
isotope number from atomic number.
mass number from atomic number.
atomic number from electron number.
