Electrons and Light

Which of the following best describes the relationship between wavelength and energy of emitted light?

• Longer wavelength corresponds to higher energy.

• Shorter wavelength corresponds to higher energy.

• Wavelength and energy are not related.

• Wavelength and energy are directly proportional.

Answer explanation

Shorter wavelength corresponds to higher energy.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-1

In the context of atomic emission spectra, what does the term "ground state" refer to?

• The highest energy level of an electron.

• The lowest energy level of an electron.

• The energy level where protons are found.

• The energy level where neutrons are found.

Answer explanation

In the context of atomic emission spectra, the term 'ground state' refers to the lowest energy level of an electron.

Which of the following is NOT a factor that affects the emission spectrum of an element?

• The number of electrons.

• The arrangement of electrons.

• The temperature of the element.

• The number of protons.

Answer explanation

The number of protons is NOT a factor that affects the emission spectrum of an element.

The emission spectrum of an element can be used to:

• Identify the element.

• Determine the number of protons in the element.

• Measure the atomic mass of the element.

• Determine the number of neutrons in the element.

Answer explanation

The emission spectrum of an element can be used to identify the element, making it the correct choice among the options provided.

Tags

NGSS.HS-PS4-3

The electron configuration for Hydrogen is?

• 1s¹

• 1s²

• 1s²2s¹

• 1s²2s²

Tags

NGSS.HS-PS1-1

Which of the following is associated with high energy?

• Short Wavelength

• Long Wavelength

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

What type of light has the highest frequency?

• Blue light

• Microwaves

• X-Rays

• Infrared

Tags

NGSS.HS-PS4-1

Emission spectra (bright line spectra) are created when electrons move from ___.

• higher to lower energy levels.

• lower to higher energy levels.

• s orbitals to p orbitals.

• one atom to a different atom.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-1

Emission of light from an atom occurs when an electron

• drops from a higher to a lower energy level.

•    jumps from a lower to a higher energy level.   

•    moves within its atomic orbital.

• falls into the nucleus.

Tags

NGSS.HS-PS1-2

If an electron moves from n=4 to n=2 it ____

• absorbs energy

• releases energy

Tags

NGSS.HS-PS4-3