Unit 1.8 Flashcards

(18 cards)

1
Q

What are the discrete energy orbits in the Bohr model called?

A

Quantum energy levels.

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2
Q

What is the lowest energy level in the Bohr model called?

A

Ground state (E0).

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3
Q

How does the energy of an electron relate to its distance from the nucleus?

A

The further from the nucleus, the more energy the electron must have.

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4
Q

What type of spectrum is produced by white light passed through a prism?

A

A continuous spectrum.

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5
Q

What type of spectrum is produced by light from stars or electrical discharge lamps?

A

A line spectrum.

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6
Q

What causes the bright lines in a line spectrum?

A

Electrons transitioning from excited states to lower energy states.

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7
Q

What happens when an electron loses energy during a transition?

A

It emits a photon.

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8
Q

What formula relates the energy of a photon to its frequency?

A

E = hf.

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9
Q

What does E represent in the formula E = hf?

A

The energy of the photon measured in joules (J).

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10
Q

What does h represent in the formula E = hf?

A

Planck’s constant, h = 6.63 × 10⁻³⁴ Js.

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11
Q

What does f represent in the formula E = hf?

A

The frequency of the emitted photon measured in hertz (Hz).

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12
Q

What is the significance of the energy difference between two levels?

A

It determines the frequency of the emitted photon.

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13
Q

How many different energy transitions are mentioned in the notes?

A

Six different energy transitions.

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14
Q

What does each element produce in terms of energy levels?

A

A unique set of energy levels and corresponding spectral lines.

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15
Q

What is the relationship between the number of spectral lines and energy jumps?

A

More lines indicate a larger number of possible energy jumps.

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16
Q

What is the formula for the energy difference between two energy levels?

A

E2 - E1 = hf.

17
Q

What does E2 represent in the energy difference formula?

A

The upper energy level measured in joules (J).

18
Q

What does E1 represent in the energy difference formula?

A

The lower energy level measured in joules (J).