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PHYSCI > Lesson 2: The Atom + Atomic History > Flashcards

Lesson 2: The Atom + Atomic History Flashcards

1
Q

True or False: Elements are made up of small, divisible particles called atoms.

A

False, indivisible

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2
Q

True or False: Elements are made up of small, indivisible particles called atoms.

A

True

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3
Q

True or False: In any given element, the atoms’ mass and properties may differ.

A

False, they are all the same

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4
Q

True or False: In any given element, the atoms’ mass and other properties are all the same.

A

True

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5
Q

True or False: Hydrogen atoms are the same with oxygen atoms.

A

False, because their atoms are made up of two different properties

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6
Q

What do we call a composition of atoms with more than one element?

A

Compound

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7
Q

Who created the Law of Definite Proportions?

A

Joseph Proust

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8
Q

True or False: It was John Joseph Thomson who proposed the Law of Definite Proportions.

A

False, Joseph Proust

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9
Q

Law of Definite Proportions

A

When elements form a compound, they combine in similar proportions by mass, regardless of the size sample.

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10
Q

True or False: When elements form a compound, they combine in distinct proportions by mass.

A

False, similar proportions

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11
Q

True or False: Size sample is a crucial factor in forming compounds, according to the Law of Definite Proportions.

A

False, compounds form regardless of such

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12
Q

Law of Multiple Proportions

A

If two elements combine to form more than one compound, the weights of one combined with the other’s fixed weight come in small whole-numbered ratios.

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13
Q

Law of Conservation of Mass

A

Matter is neither created nor destroyed during chemical reactions.

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14
Q

True or False: Matter can be destroyed during chemical reactions.

A

False

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15
Q

[Atomic History] 450 BC

A

Living things consisted of the four primal elements: Earth, Air, Fire and Water

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16
Q

[Atomic History] Important figure during 450 BC

A

Empedocles

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17
Q

[Atomic History] 400 BC

A
  • First discovered the atom
  • Matter is made up of small particles called atoms, which cannot be divided into smaller units.
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18
Q

[Atomic History] Important figure in 400 BC

A

Democritus

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19
Q

In Democritus’ model of the atom, it is a full space.

A

False, it is an empty space.

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20
Q

Atomos comes from the Latin language.

A

False, Greek language

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21
Q

Atomos directly translates to?

A

Indestructible

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22
Q

True or False: Atoms can be divided into smaller units.

A

False, they are indivisible

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23
Q

Who proposed the Law of Multiple Proportions?

A

John Dalton

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24
Q

[Atomic History] 1808

A

Formulation of the atomic theory, AKA bowling ball model

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25
Q

[Atomic History] Important figure in 1808

A

John Dalton

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26
Q

[Atomic History] 1869

A

Arrangement of the early known elements in a periodic table based on their atomic numbers and mass

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27
Q

[Atomic History] Important figure in 1869

A

Dmitry Mendeleev

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28
Q

[Atomic History] 1890

A

Discovery of radioactivity and how it causes atoms to break down

29
Q

[Atomic History] Important figures in 1890

A

Antoine Becquerel and Marie Curie

30
Q

[Atomic History] 1895

A

Discovery of X-rays

31
Q

[Atomic History] Important figure in 1895

A

Wilhelm Rontgen

32
Q

What did the very first x-ray image show?

A

Wilhelm Rontgen’s wife’s hand wearing her ring

33
Q

[Atomic History] 1897 and 1904

A
  • Discovery of electrons
  • Introduced the plum pudding model of an atom
34
Q

[Atomic History] Important figure in 1897 and 1904

A

John Joseph (J.J.) Thomson

35
Q

[Atomic History] 1908-1917

A

Discovered the charge of an electron: -1.6022 x 10^-19 C

36
Q

[Atomic History] Important figure in 1908-1917

A

Robert Millikan

37
Q

Who discovered the charge of electrons?

A

Robert Millikan

38
Q

[Atomic History] 1910-1911, 1919

A
  • Discovery of protons
  • Introduced the planetary model of an atom
  • Atoms are mostly made up of empty space
39
Q

True or False: Atoms are mostly made up of empty space.

40
Q

[Atomic History] Important figure in 1910-1911, 1919

A

Ernest Rutherford

41
Q

[Atomic History] 1913

A
  • Introduced the quantum mechanical model
  • Electrons move around in orbits around the nucleus
42
Q

[Atomic History] Important figure in 1913

A

Niels Bohr

43
Q

[Atomic History] 1932

A

Discovery of neutrons

44
Q

[Atomic History] Important figure in 1932

A

James Chadwick

45
Q

Planetary Model of an Atom

A

Ernest Rutherford

46
Q

Plum Pudding Model

A

J.J. Thomson

47
Q

Charge of electrons

A

Robert Millikan

48
Q

Four primal elements

A

Empedocles

49
Q

Discovered x-rays

A

Wilhelm Rontgen

50
Q

Discovered radioactivity

A

Antoine Becquerel and Marie Curie

51
Q

Made earliest version of the periodic table

A

Dmitry Mendeleev

52
Q

Atomic Theory / Bowling Ball Model

A

John Dalton

53
Q

Discovered atoms

A

Democritus

54
Q

Quantum Mechanical Model

A

Niels Bohr

55
Q

Discovered protons

A

Ernest Rutherford

56
Q

Discovered electrons

A

J.J. Thomson

57
Q

Discovered neutrons

A

James Chadwick

58
Q

Antoine Becquerel and Marie Curie

A

Radioactivity, causes atoms to break down

59
Q

Empedocles

A

Four primal elements

60
Q

Wilhelm Rontgen

A

discovered x-rays

61
Q

Democritus

A

discovered the atom

62
Q

Robert Millikan

A

Discovered the charge of electrons (-1.6022x10^-19 C)

63
Q

Dmitry Mendeleev

A

Earliest version of the periodic table

64
Q

Niels Bohr

A

Quantum mechanical model

65
Q

James Chadwick

A

Discovered neutrons

66
Q

Ernest Rutherford

A

Planetary Model of an Atom, discovered protons

67
Q

J.J. Thomson

A

Plum Pudding Model, discovered electrons

68
Q

John Dalton

A

Proposed the Law of Multiple Proportions, Bowling Ball Model / Atomic Theory

PHYSCI (6 decks)

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