#22 Phases of Matter
PHASES OF MATTER Matter on Earth can exist as 4 different phases or states. Solid Liquid Gas Plasma
SOLID Has a definite volume and a definite shape. The atoms or molecules in a solid are strongly attracted to one another and tightly packed. Examples: Rocks Desk Apple
LIQUID has a definite volume but no definite shape. The atoms or molecules in a liquid are attracted to each other, but not as strongly as those of a solid. Particles are free to move over and around each other. Water Blood Milk
GAS Has no definite volume and no definite shape. The atoms or molecules of gases have very little attractive force on each other. This causes them to move freely and independently. The atoms or molecules move apart until they’re evenly spaced throughout the container they are placed in. Examples: Air (mixture of different gases) Water Vapor (water in a gas form)
Solid / Liquid / Gas Particles
Plasma Most of the matter in the universe, like the stars and sun, is in the plasma state. Is an electrically charged gas Plasma exists at very high temperatures and pressures.
Plasma on Earth On Earth, plasma is found in lightning bolts. Also in Plasma TV’s, Fluorescent Bulbs, and Neon Signs!
Examples of Particles Moving http://www.harcourtschool.com/activity/states_of_matter/ http://teacher.scholastic.com/activities/studyjams/matter_states/
PHASE CHANGES List the following phases changes as Activity #26 in your notebook. Indicate the matter phase change that happens (i.e. solid liquid) Melting Evaporation Sublimation Freezing Condensation Deposition
PHASE CHANGES Matter will change phases when heat is added or lost. Melting: solid liquid (heat is added) Sublimation: solid gas (heat is added) Evaporation: liquid gas (heat is added) Freezing: liquid solid (heat is lost) Condensation: gas liquid (heat is lost) Deposition: gas solid (heat is lost)
PHASE CHANGES SUBLIMATION DEPOSITION Gas Condensation Liquid Freezing Evaporation Condensation Liquid DEPOSITION SUBLIMATION Freezing Solid Melting