The Physical Sciences Unit contains all of the lessons from the Waves and Electromagnetic Radiation packet plus the lessons from the Structure and Properties of Matter packet. These lessons include Waves, Sound, Reflection, Transmission, and Absorption of Sound Waves, Light, Analog vs. Digital, Chemistry, The Periodic Table, States of Matter, Mixtures vs. Pure Substances, and Measuring Matter. The Physical Sciences Unit supports MS-PS1 (Structure and Properties of Matter) and MS-PS4 (Waves and