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Chemisty 9th > Atomic Structure > Flashcards

Atomic Structure Flashcards

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1
Q

What was John Dalton’s idea of an atom?

A

An indivisible particle.

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2
Q

Who thought an atom was an indivisible particle?

A

John Dalton

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3
Q

What was J.J. Thomson’s model called?

A

The Plum Pudding Model.

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4
Q

What was J.J. Thomson’s idea of an atom?

A

A positively charged sphere with negatively charged electrons inside.

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5
Q

What subatomic particle did J.J. Thomson discover?

A

The electron.

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6
Q

What is an atom?

A

The smallest part of matter that keeps its original properties.

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7
Q

What is the Law of Conservation of Mass?

A

Mass can not be created nor destroy.

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8
Q

Who invented the Law of Conservation of Mass?

A

Antoine Lavoisier.

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9
Q

What are the four parts of Dalton’s Atomic Theory?

A
  1. Elements are composed of tiny, indivisible particles called atoms.
  2. All atoms within a given element are identical.
  3. Atoms of different elements are different.
  4. During Chemical reactions, atoms can be neither created nor destroyed; they are simply rearranged.
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10
Q

What was Ernest Rutherford’s idea of an atom.

A

A sphere with a tiny, positively charged nucleus center with mostly empty space and some electrons around it.

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11
Q

What part/particle of the atom did Ernest Rutherford discover?

A

The nucleus and the proton/

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12
Q

Who invented the Law of Definite Proportions?

A

Joseph Proust.

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13
Q

What law did Joseph Proust invent?

A

The Law of Definite Proportions.

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14
Q

What law did Antoine Lavoisier invent?

A

The Law of Conservation of Mass?

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15
Q

What is the Law of Definite Proportions?

A

The ratio of elements in a compound is always the same.

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16
Q

Who discovered the electron?

A

J.J. Thomson.

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17
Q

Who discovered the nucleus and the proton in an atom?

A

Ernest Rutherford.

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18
Q

What was Niels Bohr’s idea of an atom?

A

A positively charged nucleus with negative charged electrons circling around it in energy levels.

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19
Q

What about the electrons in atoms did Niels Bohr figure out?

A

Electrons surround the atom in energy levels.

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20
Q

Who discovered the concept of energy levels in atoms?

A

Niels Bohr.

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21
Q

What subatomic particle did Ernest Rutherford discover?

A

The Proton.

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22
Q

Who discovered the proton?

A

Ernest Rutherford.

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23
Q

What subatomic particle did James Chadwick discover?

A

The Neutron.

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24
Q

Who discovered the neutron?

A

James Chadwick.

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25
What is the most recent model of an atom?
The Charged Cloud Model.
26
What is the charged cloud model?
The idea that electrons don't rotate around the nucleus but in fact jump around in a fairly unpredictable pattern.
27
What three subatomic particles make up the atom?
1. Protons 2. Neutrons 3. Electrons
28
What two subatomic particles make up the nucleus?
1. Protons | 2. Neutrons
29
What subatomic particle is not part of the nucleus?
The electron.
30
What part of the atom takes up the majority of the mass?
The nucleus.
31
How is a proton charged?
Positively or +1 .
32
How is a electron charged?
Negatively or -1.
33
How is a neutron charged?
Trick question a neutron doesn't have a charge or 0.
34
What subatomic particle has a positive charge or +1?
The proton.
35
What subatomic particle has a negative charge or -1?
The electron.
36
What subatomic particle has no charge or 0?
The neutron.
37
About how much does a proton weigh (in amu)?
About 1 amu (or exactly 1.007316 amu).
38
About how much does a neutron weigh (in amu)?
About 1 amu (or exactly 1.008701 amu).
39
About how much does an electron weigh (in amu)?
About .0005 amu (or exactly .000549 amu).
40
What is the atomic number of an atom?
The amount of protons an atom has.
41
What is the mass number of an atom?
The amount of protons plus the amount of neutrons.
42
What does electronically neutral mean for an atom?
When an atom has the same amount of protons and electrons so it has no charge.
43
What element has an atomic number of 6?
Carbon (C).
44
What element has an atomic number of 8?
Oxygen (O).
45
What element has an atomic number of 1?
Hydrogen (H).
46
What element has an atomic number of 26?
Iron (Fe).
47
What element has an atomic number of 92?
Uranium (U).
48
What element has an atomic number of 79?
Gold (Au).
49
What is the atomic number of Carbon (C)?
6.
50
What is the atomic number of Oxygen (O)?
8.
51
What is the atomic number of Hydrogen (H)?
1.
52
What is the atomic number of Uranium (U)?
92.
53
What is the atomic number of Gold (Au)?
79.
54
What is so special about the energy level of noble gases.
Their outer most energy level have a full set of electrons.
55
What elements does water have.
Two hydrogen and one oxygen.
56
What compound is H2O?
Water.
57
What is an isotope?
Each of the many forms of an element with the same amount of protons but a different amount of neutrons in their nuclei.
58
What is the smallest subatomic particle known to man?
A quark.
59
What is a quark?
The smallest subatomic particle known to man.
60
What are the six kinds or flavors of quarks?
1. up 2. down 3. charm 4. strange 5. top 6. bottom
61
What kinds of quarks does a proton have?
Two up quarks and one down quark.
62
What kinds of quarks does a neutron have?
Two down quarks and one up quark.
63
What subatomic particle has two up quarks and one down quark?
A proton.
64
What subatomic particle has two down quarks and one up quark?
A neutron.
65
What kind of subatomic particle are protons and neutrons?
Hadrons, specifically baryons.
66
What are the two kinds of hadrons?
Baryons and mesons.
67
What is a baryon?
A subatomic particle with three quarks.
68
What is a meson?
A subatomic particle with one quark and one antiquark.
69
What charge do up quarks have?
A positive charge.
70
What charge do down quarks have?
A negative charge.

Chemisty 9th (1 decks)

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