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Atomic Structure Review Flashcards | StudBud
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Atomic Structure Review
Atomic Structure Review
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Answers
1
What is an isotope?
An element with same # electrons, different # neutrons.
Element with same # neutrons, different # electrons.
Element with same # protons, different # neutrons.
An element with same # protons, different # electrons.
2
By using his gold foil experiment, Rutherford was responsible for discovering that an atom contains
Molecules
Electrons
Anodes
A nucleus
3
What subatomic particle(s) determines the identity of an atom?
All of them
Neutrons
Electrons
Protons
4
Which of the following best describes a hydrogen-3 isotope?
1 P, 1 N, 1 E
1 P, 1 N, 1 E
3 P, 3 N, 3 E
1 P, 2 N, 1 E
5
What ion has 6 protons?
Carbon
Oxygen
Nitrogen
Boron
6
What neutral element has 20 electrons?
Calcium
Bromine
Aluminum
Tungsten
7
What does "Neon" represent here?
Atomic Number
Element Symbol
Element Name
Atomic Mass
8
How are the number of electrons determined in a neutral atom?
Subtract Atomic Mass from Atomic Number
Same as Atomic Mass
Same as Neutrons
Same as Protons
9
What does "20.18" represent here?
Element Symbol
Atomic Mass
Element Name
Atomic Number
10
Which statement is true about Cl-35 and Cl-37?
Have the same mass number.
Have the same Atomic Number.
Have the same # of neutrons.
Don't have the same # of protons.
11
What did JJ Thomson discover?
The proton has a (+) charge.
The electron has a (-) charge
The electron has a (+) charge.
The proton has a (-) charge.
12
What is the name of element Na?
Natrium
Sodium
Nitrogen
Nickel
13
What element has 11 protons, 11 electrons, and 12 neutrons?
Magnesium
Boron
Oxygen
Sodium
14
The normal charge of the nucleus of an atom is:
Neutral
Negative
No charge
Positive
15
How many protons, neutrons, and electrons are in the isotope Carbon-12?
6 P, 6 E, 13 N
6 P, 6 E, 7 N
6 P, 6 E, 6 N
7P, 6 E, 6 N
16
An element's atomic number is equal to its number of:
Neutrons
Atomic Number
Protons
Electrons
17
If 1
proton
was removed from a Neon atom, what would remain?
Fluorine atom
Potassium atom
Calcium atom
Oxygen atom
18
Which of these statements is NOT part of Dalton's atomic theory?
Atoms cannot be divided.
Atoms are made of electrons.
Atoms of an element look alike.
Atoms of different elements form compounds.
19
According to Bohr’s theory, an electron’s path around the nucleus defines its
Electric charge
Atomic mass
Atomic Number
Energy Level
20
The atomic theory of the ancient Greek philosopher Democritus was revised because?
It explained what electrons are.
Scientists found new evidence.
It claims atom could be divided.
It claimed matter is made of atoms.
21
A neutral Sodium atom has how many electrons?
12
11
0
23
22
Thompson’s “plum pudding” (or chocolate chip ice cream) atomic model showed the atom:
As positive particles scattered in a negative mass
Has a negatively charged nucleus
Has neutrons and electrons
As negative particles scattered in a positive mass
23
If 2
electrons
were removed from a Magnesium atom, what would remain?
Neon Ion
Potassium Ion
Calcium Ion
Magnesium Ion
24
An iron atom has an atomic mass of 56 & atomic number is 26. How many neutrons?
82
56
26
30
25
How does a positive charge in Mg2+ affect the number of electrons?
Has 2 more electrons.
Doesn't change.
Has 2 less electrons.
Has 1 more electron.
26
Because of his gold foil experiment, Rutherford concluded that:
Atoms contained no charge particles.
Atoms were mostly empty space.
Electrons form the nucleus.
Atoms are indivisible.
27
What is the symbol for Lead?
Pb
L
PB
Le
28
What does "10" represent here?
Atomic Mass
Atomic Number
Element name
Element Symbol
29
How many protons, neutrons, and electrons are in Copper-66?
29 P, 29 E, 29 N
37 P, 29 E, 29 N
29 P,29 E, 37 N
29 P, 37 E, 29 N
30
What does the Ne represent here?
Atomic Mass
Element Symbol
Atomic Number
Element Name
