Light and Electrons

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low

• high, high

• low, high

• low, low

Tags

NGSS.HS-PS4-1

The frequency of violet light is 7.5x10¹⁴ Hz. What is its wavelength?

• 4.0x10^-7 m

• 4.0x10⁷ m

• 2.25x10²³m

• 2.25x10²³ Hz

Tags

NGSS.HS-PS4-1

Red light has a wavelength of 675 x 10^-9 m. What is its frequency?

• 2.03x10¹¹ m

• 4.44x10¹⁴ Hz

• 4.44x10¹⁴ nm

• 2.03x10¹¹ Hz

Tags

NGSS.HS-PS4-1

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

NGSS.HS-PS4-3

What is Planck's Constant?

• 6.63x10^-34 Js

• 6.63x10^-34 J/s

• 3.0x10⁸ ms

• 3.0x10⁸ m/s

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

In order to go from ground state to an excited state, an electron must

• emit energy

• absorb energy

• rotate

• wiggle

Tags

NGSS.HS-PS1-2

When an electron returns to ground state from an excited state, the atom will

• emit energy

• absorb energy

• rotate

• wiggle