AP Chemistry: Nature of Light Quiz

What is the approximate wavelength of green light in nanometers?

• 580 nm

• 700 nm

• 400 nm

• 525 nm

Which type of electromagnetic radiation has a longer wavelength than visible light?

• Gamma rays

• Ultraviolet

• Infrared

• X-rays

Who is the scientist known for studying electromagnetic radiation and proposing that energy is quantized?

• Albert Einstein

• Isaac Newton

• Niels Bohr

• Max Planck

What is the term used to describe the packets of energy in light?

• Photons

• Neutrons

• Electrons

• Protons

How is quantized energy different from continuous energy?

• Quantized energy can exist at any level, like a ramp.

• Quantized energy exists in specific levels, like a staircase.

• Continuous energy is only found in electromagnetic radiation.

• Continuous energy exists in packets, like photons.

What happens to electrons when they absorb ultraviolet or visible light?

• They jump to a higher energy level.

• They remain in the same energy level.

• They rotate around the nucleus.

• They start to vibrate.

What effect does infrared radiation have on molecules?

• It causes them to vibrate.

• It causes them to emit light.

• It causes them to rotate.

• It causes them to ionize.

Why are microwaves used to cook food?

• They cause water molecules to rotate, generating heat.

• They cause electrons to jump energy levels.

• They ionize the food molecules.

• They emit visible light that cooks the food.

Which type of radiation has the highest energy?

• Infrared

• Radio waves

• Microwaves

• Gamma rays

What is the primary effect of microwave radiation on molecules?

• It causes them to rotate.

• It causes them to vibrate.

• It causes them to ionize.

• It causes them to emit light.