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Chemistry (10th) > Pink Unit (2) — Atoms > Flashcards

Pink Unit (2) — Atoms Flashcards

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1
Q

Discovered by JJ Thompson, he called them corpuscles

A

E

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2
Q

These give the nucleus a positive charge

A

P

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3
Q

Makes isotopes different from each other

A

N

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4
Q

Mass equals one AMU

A

P & N

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5
Q

Found outside of the nucleus

A

E

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6
Q

Numbers of these can change

A

P & E & N

However, if a proton amount is changed it will change the identity of the element

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7
Q

Tiniest mass of all

A

E

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8
Q

No charge, electrically neutral

A

N

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9
Q

According to wave mechanics, you can never know the exact location of these only the probability

A

E

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10
Q

These two particles have the same mass

A

P & N

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11
Q

Negatively charged

A

E

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12
Q

Number never changes in an atom

A

P

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13
Q

These particles add up to an atoms mass number

A

P & N

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14
Q

Found in nucleus

A

P & N

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15
Q

Rutherford and Bohr thought these orbited the nucleus like planets around the sun

A

E

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16
Q

Charge particles

A

P & E

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17
Q

Found in energy levels

A

E

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18
Q

Positively charged

A

P

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19
Q

Mass equals 1/1840 amu

A

E

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20
Q

The number of these always equal to the atomic number

A

P

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21
Q

Carbon 12 and carbon 14 are different because of

A

N

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22
Q

Positive alpha particles were deflect it off the nuclear of gold atoms because of these

A

P & N

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23
Q

In a neutral atom, these equal the number of protons

A

E

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24
Q

Composed of smaller particles called quarks

A

P & N

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25
Q

About 1/12 of the mass of a carbon atom (or one AMU)

A

P & N

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26
Q

Came up with the idea that matter is composed of tiny particles

A

Democritus

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27
Q

Call particles átomos (uncuttables)

A

Democritus

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28
Q

Proposed law of conservation of mass

A

Antoine Lavoisier

29
Q

Determines an elements exist as discreet pockets of matter

A

Dalton

30
Q

Name the electrons corpuscles through the cathode ray experiment

A

JJ Thompson

31
Q

Created the plum putting model

A

JJ Thompson

32
Q

Discover that the entire positive charge of the atom must be concentrated in a very small area called the nucleus

A

Ernest Rutherford

33
Q

Named protons as well as determined that most of the atom is empty space through a gold foil experiment

A

Ernest Rutherford

34
Q

Started with Rutherford and invented the Bohr model, representing the location of electrons

A

Niels Henrik David Bohr

35
Q

Created the quantum theory that electrons weren’t particles are waves in location could be determined only by probability. Made the cloud model.

A

Werner Karl Heisenberg

36
Q

Came up with the name of the neutron

A

Chadwick

37
Q

The number changes for different isotopes

A

N

38
Q

Involved in bond formation

A

E

39
Q

Who is the father of atomic theory?

A

John Dalton

40
Q

Elements are composed of small indivisible particles called atoms

A

Dalton’s first postulate

Not accurate

41
Q

Atoms of the same element are identical. atoms of different elements are different

A

Dalton’s second postulate

Not accurate

42
Q

Atoms of different elements, combine and simple proportions to create a compound

A

Dalton’s third postulate

43
Q

In a chemical reaction, items are not created, destroyed, or changed, only rearranged

A

Dalton’s fourth postulate

44
Q

Electron cloud mass vs volume

A

.1% mass

99.9% volume

45
Q

Average atomic mass

A

(%abundance/100) x mass

46
Q

Father of the periodic table

A

Dmitri mendelev

47
Q

Malleable

A

Metals

48
Q

Ductile

A

Metals

49
Q

Shiny, gray

A

Metals

50
Q

Conductors

A

Metals

51
Q

Usually solid at room temp

A

Metals

52
Q

Metals mixed make ——-

A

Alloys

53
Q

Poor conductors

A

Non Metals

54
Q

Solids are brittle

A

Non Metals

55
Q

Light is a form of energy and can be ——- or a ——-

A

Photon or energy wave

56
Q

The distance between equivalent points on the wave

A

Wavelength

57
Q

The height of a wave from origin to crest or origin to trough

A

Amplitude

58
Q

The highest point of a wave

A

Crest

59
Q

The lowest point of a wave

A

Trough

60
Q

The number of waves at pass a given point per second

A

Frequency (v)

61
Q

Upside down y

A

Y

62
Q

Speed of light =

A

Wavelength x frequency

63
Q

Electromagnetic spectrum

A

Radio, micro, infrared, visible, UV, x rays, gamma

64
Q

How do you excite electrons

A

With heat or electricity

65
Q

Once electrons gain energy, they ____ to the next ______ level

A

Jump

Energy

66
Q

Electrons don’t want to be excited, so they fall down to the lowest energy level, and (what happens?)

A

Energy is released and we see color in the form of photons

67
Q

What part of Dalton’s atomic theory was disproved by Thompson’s experiment?

A

Thompson discovered electrons, which disprove that atoms were indivisible

68
Q

Which elements don’t follow the rule about valence electrons being the same and determining chemical properties

A

Helium and transition metals

69
Q

What causes an electron to be in an excited state?

A

It has gained energy

Chemistry (10th) (7 decks)

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