Unit 3 AP Chem Review

Which of these options is NOT a reason why a gas may act 'non-ideal'?

• Low Pressure

• There is some attraction between particles.

• The effect of particle volume

• Low Temperatures

Which of these options is a feature of ionic solids?

• Malleable

• High Melting Point

• Conducts as a solid

• Weak attraction between particles

What type of molecular transition is microwave radiation associated with?

• Electron energy level

• Vibration

• Nothing

• Rotation

A molecule absorbs a photon with a frequency of 2 x 10^8. How much energy, in joules, will it take for the molecule to absorb the photon?

• 1.3 x 10^-25

• 1.7 X 10^-3

• 1.3 x 10^-41

• 1.3 x 10^-23

Tags

NGSS.HS-PS4-1

What is the wavelength of a wave that has 1.05 x 10^-2 joules of energy?

• 2.0 x 10

• 1.8 x 10^-39

• 1.9 x 10^-23

• 1.7 x 10^-43

Tags

NGSS.HS-PS4-1

The paper is the stationary phase and the liquid is the mobile phase. Which of the ink spots is the most polar?

• red

• blue

• green

• yellow

What types of intermolecular forces do H2S molecules exhibit with other H2S molecules?

• Dipole-Dipole and LDFs

• Hydrogen bonds, dipole-dipole, and LDFs

• Only LDFs

• Only dipole-dipole

Tags

NGSS.HS-PS1-3

Which of these compounds would be the most likely to dissolve in water?

• CCl4

• NaCl

• C18H42O2

• C8H18

Tags

NGSS.HS-PS1-3

What happens to the average kinetic energy of particles when they are compressed? (temperature is constant)

• The average kinetic energy increases

• The average kinetic energy decreases

• It depends on the particle.

• The average kinetic energy stays the same

Answer explanation

Pressure doesn't change kinetic energy, but temperature does.

If 300ml of .25M CuSO4 is added into .5 liter of water, what is the molarity of Cu in the new solution?

• .97

• .093

• .07

• .5