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Chapter 3.1

Chapter 3.1. Solids, Liquids, and Gasses. Objectives. Using the Kinetic Theory model, explain the changes that occur in the distance between atoms/molecules and temperature of a substance as energy is absorbed or released during a phase change. Can You Do This???.

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Chapter 3.1

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  1. Chapter 3.1 Solids, Liquids, and Gasses

  2. Objectives • Using the Kinetic Theory model, explain the changes that occur in the distance between atoms/molecules and temperature of a substance as energy is absorbed or released during a phase change.

  3. Can You Do This??? • I can classify materials (solids, liquids, gases) based on their shape and volume. • I can apply the kinetic theory and forces of attraction to explain the behavior (properties) of solids, liquids, and gases.

  4. Warm-Up Classify the following objects as a solid, liquid, or gas:

  5. Warm-Up Classify the following objects as a solid, liquid, or gas:

  6. Warm-Up Classify the following objects as a solid, liquid, or gas:

  7. Talk to Shoulder Partner • How do you know if a material is a solid, liquid, or gas? • With your partner, attempt to identify the following materials:

  8. Let’s Classify The Following

  9. Describing States of Matter We can all classify EASY materials, and have trouble with others, so but the big question is… So we need to set up some clear definitions we can use to classify these things: HOW?!?

  10. Kinetic Theory of Matter • Matter is composed of tiny particles in constant motion. • The amount of motion is dependent on the energy of the particles. • The amount of motion determines the physical state (solid, liquid, gas) of the matter.

  11. Solids • Solids have a definite shapeand definite volume. • Atoms are packed close together and have limited movement. • Crystalline solids have an orderly arrangement to their particles. • Amorphous solids do not have an orderly arrangement to their particles.

  12. Stopping Here Summary Be sure to write in complete sentences! How can you tell the difference between a solid and a liquid???

  13. Liquids • Liquids have definite volume but not definite shape. • Take the shape of their container. • Have the ability to flow. • Low compressibility. Hyperlink

  14. Gases • Gases do not have definite volume or definite shape. • Gas particles move very fast and are separated by great distances. • Gases take the shape of their container. • Gases expand to fill their container. • Gases exert pressure on the walls of their container. • Gases are very compressible.

  15. Let’s Classify The Following

  16. Plasma • In the plasma state, gas particles collide with such force they are stripped of their electrons. • These super-heated, charged particles travel at very high speeds. • 99% of the universe exists in the plasma state.

  17. Kinetic Theory • The word kinetic comes from the Greek word meaning “to move”. • Kinetic theory – all particles of matter are in constant motion. How fast are the particles moving?

  18. Kinetic Theory For accurate comparison, we need a frame of reference: 95 mi/hr 153 km/hr 1600 km/hr

  19. Explaining the Behavior of Gases • The constant motion of gas particles causes a gas to take the shape and volume of its container. • But what if we removed the lid from this container?

  20. Explaining the Behavior of Liquids • Particles are more closely packed than a gas but still can flow. • Particles move with less energy.

  21. Explaining the Behavior of Solids • Definite shape and volume because particles are in a “fixed” location. • Vibrate in place. Hyperlink

  22. Virtual Demonstration Hyperlink

  23. Review – Throw The Ball • Does a solid have a definite shape? • Does a liquid have a definite shape? • Does a gas has a definite shape? • Does a solid have a definite volume? • Does a liquid have a definite volume? • Does a gas have a definite volume?

  24. One More Substance To Classify Hyperlink

  25. Can You Do This??? • I can classify materials (solids, liquids, gases) based on their shape and volume. • I can apply the kinetic theory and forces of attraction to explain the behavior (properties) of solids, liquids, and gases.

  26. Stopping Here Summary Be sure to write in complete sentences! Describe the speed of the particles of a solid, a liquid, and a gas.

  27. Closure

  28. Closure • Chap. 3 Reviews • Pg. 74 1-8 OMIT #7 • Pg. 81 1-7 • Pg. 91 1-6

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