1. Rutherford Model
Know where the protons and neutrons are, but where are the electrons? If opposite charges attract, why do the electrons not fall into the nucleus?

2. EMR
Electromagnetic radiation (EMR) is a form of energy that exhibits wavelike behavior as it travels through space.
Packets of energy (photons) that travel as waves

3. Structure of a Wave

4. Energy of a wave Low frequency/large wavelength = low energy
High frequency/small wavelength = high energy

5. Electromagnetic Spectrum
Electromagnetic radiation: Includes radio waves, microwaves, x-rays, and visible light
Spectrum: the range of wavelengths & frequencies of electromagnetic radiation

6. Electromagnetic Spectrum
Visible Spectrum: A beam of light can be separated into different wavelengths of light when passed through a prism

7. Which colors of light are high energy?
Which colors of light are low energy?

8. Bright-Line Spectra
When an element is excited (or energy is applied) the element emits light. When this light is passed through a prism, a unique spectra, called an atomic line spectra, is visible