CONTENT OBJECTIVE

understand the electromagnetic spectrum and the mathematical relationships between energy, frequency, and wavelength of light.

WHAT THE HECK DO I NEED TO BE ABLE TO DO?

I can

I can calculate the wavelength, frequency, and energy of light using Planck's constant and the speed of light.

LIGHT AND THE ATOMIC MODEL1. A new atomic model evolved as a result of the investigation into the absorption and emission of _______ by matter.LIGHT

LIGHT AND THE ATOMIC MODELA. Visible ______ is a kind of ____________________ ___________, which is a form of energy that exhibits both wave-like and particle-like behaviors as it travels through space.

RADIATION

LIGHTELECTROMAGNETIC

LIGHT AND THE ATOMIC MODELa. Visible light can behave like a _______ characterized by the measurable properties of ______________ and ____________.FREQUENCY

WAVE

WAVELENGTH

LIGHT AND THE ATOMIC MODEL1. _______________ (λ) is the distance between corresponding points on adjacent waves.

WAVELENGTH

wavelength

LIGHT AND THE ATOMIC MODEL2. _____________ (f) is defined as the number of waves that pass a given point in a specific time, usually one second (Often measured in hertz, Hz).

FREQUENCY

frequency

LIGHT AND THE ATOMIC MODEL3. The wavelength and frequency for light waves can

be related mathematically in the following way:

c= λ fc= speed of light (3.0x108m/s)

λ = wavelength f = frequency

LIGHT AND THE ATOMIC MODELb. Visible light can behave like a stream of particles or __________. A _________ is a particle of electromagnetic radiation having zero mass and carrying a specific amount of energy.

PHOTONS PHOTON

LIGHT AND THE ATOMIC MODEL1. The _________________ effect is evidence that light behaves as a stream of particles.

PHOTOELECTRIC

LIGHT AND THE ATOMIC MODEL2. Max Planck suggested and Albert Einstein elaborated on the following formula when describing the relationship between frequency and the ___________ of energy of a photon. QUANTUM

LIGHT AND THE ATOMIC MODELThe specific quantum of energy a photon contains can be found using the following

formula: Ephoton=hfE= Energy

h = 6.626x10-34J∙s

f = frequency

LIGHT AND THE ATOMIC MODEL3. A ___________ is a specific amount of energy proportional in size to the frequency of the radiation it represents.

QUANTUM

energy2.65x10-19J

3.25x10-19J

3.64x10-19J4.31x10-19J4.97x10-19J

LIGHT AND THE ATOMIC MODEL2. Scientists use this understanding of ______ to also describe the properties of the ___________ and their behavior in the electron cloud.

LIGHT

ELECTRON