Modern Review

Experiments performed with light indicate that light exhibits

• particle properties, only

• wave properties, only

• both particle and wave properties

• neither particle nor wave properties

Tags

NGSS.HS-PS4-3

Which particle would generate the greatest amount of energy if its entire mass were converted into energy?

• electron

• proton

• alpha particle

• neutron

Tags

NGSS.HS-PS1-8

The energy equivalent of 5.0 x 10^-3 kilogram is

• 8 x 10⁵ J

• 1.5 x 10⁶ J

• 4.5 x 10¹⁴ J

• 3 x 10¹⁹ J

What is the energy of a photon with a frequency of 5.00 x 10¹⁴ hertz?

• 3.32 eV

• 3.2 x 10^-6 eV

• 3 x 10⁴⁸ J

• 3.32 x 10^-19 J

Tags

NGSS.HS-PS4-1

When incident on a given photoemissive surface, which color of light will produce photoelectrons with the greatest energy?

• red

• orange

• violet

• green

Tags

NGSS.HS-PS4-3

The fact that most of the alpha particles directed at a thin metal foil pass through without being deflected indicates that the atom consists mostly of

• electrons

• neutrons

• empty space

• protons

What do alpha-particle scattering experiments indicate about an atom's structure?

• Electrons occupy distinct energy levels

• Positive and negative charges are evenly distributed

• Negative charges fill the space around the core

• Positive charge is concentrated in a small, dense core

Which is a characteristic of both the Bohr and Rutherford atomic models?

• Neutrons exist in the nuclei of all atoms

• Only a limited number of specified orbits is permitted

• The nucleus is concentrated in a small, dense core

• Electron energy level changes are in discrete amounts

What is the minimum amount of energy required to ionize a hydrogen atom in the n = 2 state?

• 13.6 eV

• 10.2 eV

• 3.4 eV

• 0 eV

If a hydrogen atom absorbs 1.89 eV of energy, it could be excited from energy level

• n=1 to n=2

• n=1 to n=3

• n=2 to n=3

• n=2 to n=4