Electrons in Atoms

What causes the emission of light in atoms?

• Electrons falling to lower energy levels release energy as light.

• Atoms absorbing energy from their surroundings.

• Nuclei undergoing radioactive decay.

• Electrons gaining energy and moving to higher energy levels.

Why is it important to convert units before calculating?

• To ensure calculations are done quickly and without errors.

• To match the units with the speed of light for accurate calculations.

• To simplify the numbers for easier computation.

• To avoid using scientific notation in calculations.

What is the relationship between wavelength and frequency?

• They are directly related: when one increases, the other increases.

• They are inversely related: when one increases, the other decreases.

• They are unrelated: changes in one do not affect the other.

• They are proportionally related: both increase or decrease together.

What is an excited state?

• When an electron absorbs energy and moves to a higher energy level.

• When an electron is at its lowest energy level.

• When an electron is completely removed from the atom.

• When an electron moves to a lower energy level.

How does changing the wavelength affect the frequency?

• As wavelength increases, frequency increases because they are directly related.

• As wavelength increases, frequency decreases because they are inversely related.

• Wavelength and frequency are not related at all.

• Changing the wavelength has no effect on frequency.

What is frequency?

• The speed of sound in air.

• The distance between two wave peaks.

• How many wave cycles pass a point in one second, measured in hertz (Hz).

• The amplitude of a wave.

What is hertz?

• A unit of frequency representing one wave cycle per minute.

• A unit of frequency representing one wave cycle per second.

• A unit of energy measurement in physics.

• A unit of length in the metric system.

What is an atomic emission spectrum?

• A set of light wavelengths emitted when electrons return to lower energy levels.

• A collection of colors produced by a prism.

• The range of frequencies of electromagnetic radiation emitted by a source.

• The pattern of dark lines observed in a spectrum.

What is wavelength?

• The distance between two consecutive peaks in a wave.

• The speed of a wave in a vacuum.

• The frequency of a wave measured in Hertz.

• The amplitude of a wave measured in meters.

What is a photon?

• A type of electromagnetic wave.

• A particle of light that carries energy.

• A form of sound wave.

• A unit of measurement for light intensity.