WHAT THE HECK DO I NEED TO BE ABLE TO DO? CONTENT OBJECTIVE WHAT THE HECK DO I NEED TO BE ABLE TO DO? understand the electromagnetic spectrum and the mathematical relationships between energy, frequency, and wavelength of light. I can calculate the wavelength, frequency, and energy of light using Planck's constant and the speed of light. I can
L I G H T AND THE ATOMIC MODEL 1. A new atomic model evolved as a result of the investigation into the absorption and emission of _______ by matter. L I G H T
L I G H T LIGHT ELECTROMAGNETIC RADIATION AND THE ATOMIC MODEL LIGHT A. 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. ELECTROMAGNETIC RADIATION
L I G H T WAVE WAVELENGTH FREQUENCY AND THE ATOMIC MODEL a. Visible light can behave like a _______ characterized by the measurable properties of ______________ and ____________. WAVE WAVELENGTH FREQUENCY
L I G H T AND THE ATOMIC MODEL WAVELENGTH 1. _______________ (λ) is the distance between corresponding points on adjacent waves.
wavelength
L I G H T AND THE ATOMIC MODEL FREQUENCY 2. _____________ (v) 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
c= speed of light (3.0x108m/s) AND THE ATOMIC MODEL 3. The wavelength and frequency for light waves can be related mathematically in the following way: c= λ f c= speed of light (3.0x108m/s) λ = wavelength f = frequency
L I G H T AND THE ATOMIC MODEL b. 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
L I G H T AND THE ATOMIC MODEL PHOTOELECTRIC 1. The _________________ effect is evidence that light behaves as a stream of particles.
L I G H T AND THE ATOMIC MODEL 2. 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
L I G H T Ephoton=hf E= Energy h = 6.626x10-34J∙s f = frequency AND THE ATOMIC MODEL The specific quantum of energy a photon contains can be found using the following formula: Ephoton=hf E= Energy h = 6.626x10-34J∙s f = frequency
L I G H T AND THE ATOMIC MODEL QUANTUM 3. A ___________ is a specific amount of energy proportional in size to the frequency of the radiation it represents.
energy 2.65x10-19J 3.25x10-19J 3.64x10-19J 4.31x10-19J 4.97x10-19J
L I G H T single convert AND THE ATOMIC MODEL 4. Recognize that this energy represents the energy of a _______ photon. Be prepared to _________ to energies absorbed or emitted to kilojoules per mole instead of joules per photon of a single photon single convert
L I G H T AND THE ATOMIC MODEL B. Scientists use this understanding of ______ to also describe the properties of the ___________ and their behavior in the electron cloud. LIGHT ELECTRON