Which model of light helps explain the photoelectric effect?

• the wave model

• the polarizing model

• the particle model of light

• the electromagnetic model

Tags

NGSS.HS-PS4-3

What subatomic particle is responsible for the spectral lines seen in emission spectra diagrams?

• electrons

• protons

• neutrons

Tags

NGSS.HS-PS1-2

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS4-3

Which of the following transitions in a hydrogen atom would result in the emission of light?

Use the formula in the picture to answer the following problem: What is the wavelength of a photon that has 4.22 X 10^-25 J of Energy

When are photons of light released?

• When electrons move from the ground state to the excited state

• When electrons move from the excited state to the ground state

• When electrons stay in the same orbital.

• When the distance to the nucleus increases.

Tags

NGSS.HS-PS4-3

Photons

• state of matter that consists of charged particles, super hot and dense

• states all matter & energy in the universe was compressed into an extremely small volume, then expanded

• negative 273 degrees Celsius; temp. at which all particle motion stops

• galaxies are moving away at a speed that is proportional to their distance

• massless particles of electromagnetic radiation, light

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

Which of the following is a common use of emission spectra in laboratories?

• Determining the mass of a sample

• Identifying elements in a sample

• Measuring the volume of a liquid

• Calculating the density of a solid

Which element is most likely to be identified by its bright red emission line in its spectrum?

• Sodium

• Hydrogen

• Helium

• Neon

Tags

NGSS.HS-PS4-3

Which of the following elements is known for its bright yellow emission line?

• Sodium

• Lithium

• Potassium

• Calcium