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Chemistry 1 > WQTP 3 > Flashcards

WQTP 3 Flashcards

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1
Q

A _ is an SI unit for energy

A

Joule

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2
Q

Quantum theory is the study of _ on the atomic and subatomic levels (2)

A

Matter

Energy

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3
Q

Quantum theory is the study of matter and energy in the _ levels (2)

A

Atomic

Subatomic

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4
Q

Quantum theory allows scientists to understand how _ behave and make predictions

A

Electrons

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5
Q

According to quantum theory, energy is always emitted in _ multiples of hv

A

Whole-number

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6
Q

Whole number multiples of hv example

A

Hv, hv 2, hv 3, etc.

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7
Q

Not whole number hv example

A

Hv 3.2

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8
Q

Albert Einstein developed theory of

A

Relativity

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9
Q

Einstein awarded Nobel prize in 1921 for his discovery of

A

Law of photoelectric effect

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10
Q

Albert Einstein took _ theory to the next level

A

Planck’s

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11
Q

Took planck’s theory to the next level by shooting a _ into a metal surface

A

Beam of light

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12
Q

The beam of light caused _ to be emitted

A

Electrons

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13
Q

Electrons being emitted by beam of light onto a metal surface called

A

Photoelectric effect

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14
Q

Einstein found that the number of electrons being ejected from metal surface was proportional to

A

The brightness of the light

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15
Q

Brighter light meant

A

More electrons being ejected

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16
Q

For Electrons to be ejected, energy of light must be (photoelectric effect)

A

Above a certain frequency

17
Q

The frequency that light must be above is known as

A

The threshold frequency

18
Q

Why it requires enough frequency to push out electrons

A

Electrons in metal atoms are held together tightly

19
Q

Beam of light that is able to eject electron from metal called a

A

Photon

20
Q

The photon that ejected electron was a

A

Particle of light

21
Q

A photon equals a

A

Quantum

22
Q

Photons are (n,s)

A

Neutral

Stable

23
Q

Photons have no

A

Mass

24
Q

Photons interact with

A

Electrons

25
Q

Photons have energy and speed that is dependent on

A

Electron’s frequency

26
Q

A photon can travel at the speed of light but only ()

A

In a vacuum (outer space)

27
Q

All _ are made of photons (2)

A

Light

EM energy

28
Q

Quantum theory allows scientists to predict and understand how _ will behave

A

Electrons

29
Q

Partial photons cannot be emitted from an object because

A

Photons are only emitted in whole numbers

30
Q

Photons differ from electrons because photons are

A

Massless

31
Q

Photon is the smallest _ like a quantum

A

Unit of energy

Chemistry 1 (48 decks)

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