1. Quantum Mechanics

2.  Write what’s in white on the back of the Week 10 Concept Review  Then, answer the questions on the front Your Job

3. Do plants need light to grow?

4.  The quantum mechanical model developed as a result of scientists trying to explain the behavior of light  Assumed it consisted of particles  Discovered light actually consists of waves by 1900 Light

5.  Amplitude: wave’s height from zero to the crest  Wavelength: distance between crests  Frequency: # wave cycles to pass a given point per unit of time.  The product of frequency and wavelength always equals a constant, the speed of light Light How are wavelength and frequency related?

6.  Electromagnetic radiation includes radio waves, microwaves, infrared waves, visible light, ultraviolet waves, X-rays, and gamma rays  Sunlight consists of light with a continuous range of wavelengths and frequencies. When sunlight passes through a prism, the frequencies separate into a spectrum of colors. Electromagnetic Spectrum What color in the visible spectrum has the longest wavelength? http://chemwiki.ucdav is.edu/Physical_Chemi stry/Spectroscopy/Elec tromagnetic_Radiation

7.  When atoms absorbs energy, electrons move into higher energy levels. These electrons then lose energy by emitting light when they return to lower energy levels.  Atomic emission spectrum: the frequencies of light emitted by an electron.  Is different for each element (like a fingerprint)  Ground State vs. Excited State  Ground state; lowest possible energy an electron can have  Excited state: the level the electron jumps to. Atomic Spectra http://www.mhhe.com/physsci/chemistry/e ssentialchemistry/flash/linesp16.swf

8.  The idea that electrons were described as waves and particles was difficult for scientists to accept.  Photon: a quantum of light; a discrete bundle of electromagnetic energy that interacts with matter similarly to particles.  Heisenberg Uncertainty principle: it’s impossible to know exactly both the velocity and the position of a particle at the same time. Quantum Mechanics

9. E-Moment!

10.  Write the following words on small pieces of paper  Amplitude  Wavelength  Frequency  Electromagnetic radiation  Atomic emissions spectrum  Ground state  Photon  Heisenberg uncertainty principle  Quantum mechanical model  Visible light Quick Draw!!!

11. wave’s height from zero to the crest

12. # wave cycles to pass a given point per unit of time.

13.  The lowest energy level an electron can occupy

14.  distance between crests

15.  A “packet” of light. A quanta of energy

16.  The idea that you cannot know both the location and velocity of an electron

17.  Consists of gamma rays, x rays, UV, visible, infrared, micro, radar, and radio waves

18.  The fingerprint of an element. Discrete lines of electromagnetic waves (or color) that an excited atom gives off. Seen through a prism

19.  The fuzzy cloud model. Where electron location is based on probability

20.  ROYGBIV