Electrons and Light

What do we call packet of light (particles of light)?

• neurons

• photons

• lightning

• sparkles

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NGSS.HS-PS4-3

Where do photons (light) originate from?

• From electrons falling from a high energy, level to a low energy level

• From electrons moving from a low energy level, to a high energy level

• From electrons moving to the nucleus

• From an atom losing electrons in an ionic bond

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NGSS.HS-PS4-3

For an electron to change from ground state to an excited stated it must...

• Absorb energy

• Release energy

Why are line emission spectra of elements called "atomic fingerprints"?

• They are all the same

• They are all unique

• They are all similar

• They all contain colored light

Tags

NGSS.HS-PS4-3

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

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NGSS.HS-PS4-3

What is the speed of light?

• 3.0x10⁸ ms

• 3.0x10⁸ m/s

• 6.626x10^-34 Js

• 6.626x10^-34 J/s

Tags

NGSS.HS-PS4-1

Which electron absorbed the most energy?

• n = 3 to n = 6

• n = 3 to n = 5

• n = 3 to n = 4

• n = 3 to n = 7

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NGSS.HS-PS1-2

Atomic emission spectra can be used to identify an element because ___

• They are pretty colors

• They are unique to each element

• they all make the same colors

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Helium

An electron an excited state is located:

• In the energy level closest to the nucleus

• In an energy level far away from the nucleus

• Inside the nucleus

• Outside the atom