Energy, Light, Electrons and Photons

Waves with a long wavelength have a __________ energy

• high

• low

Tags

NGSS.HS-PS4-1

Which of the following colors of light have the highest energy

• red

• orange

• green

• purple

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NGSS.HS-PS4-1

NGSS.HS-PS4-4

An atom that has gained energy beyond normal is said to be ...

• excited

• grounded

• naturalized

Valence electrons are located...

• inside the nucleus

• in outer space

• on the outermost energy level in an atom

• on the energy level closest to the nucleus.

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NGSS.HS-PS1-2

NGSS.HS-PS1-1

The energy of an electron __________ as it moves further away from the nucleus

• increases
• decreases

When an atom has all of its electrons in the lowest energy orbitals available, the atom is  

• in ground state
• in excited state
• giving off light energy
• unstable

__________ represents the distance the electrons are from the nucleus

• energy level

• sublevel

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NGSS.HS-PS1-1

Light is emitted when electrons

• move from one atom to another.

• collide with one another, releasing energy.

• move from a lower energy level to a higher energy level.

• move from a higher energy level to a lower energy level.

Tags

NGSS.HS-PS4-3

Flame tests can be used to identify an element. Each element emits characteristic waves of light when it is heated in a flame. What describes how the light is produced?

• Protons in the ground state lose energy and give off light.

• Protons in the ground state gain energy and are emitted from the nucleus, giving off light.

• Electrons in the ground state lose energy and move to an excited state, giving off light.

• Electrons in the ground state gain energy, move to an excited state, and give off light when they return to the ground state.

Tags

NGSS.HS-PS4-3

Ground state means that an electron is...

• at its lowest possible potential energy

• in the first shell of an atom

• laying low for the weekend

• removed from an atom