Investigation 3 2 Air Is Matter 2010

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  • 1. Air is Matter Investigation 3.2
  • 2. Everything is made of elements. What elements could be in the gas that forms when sodium bicarbonate (NaHCO 3 ) and citric acid (C 6 H 8 0 7 ) react?
    • Sodium (Na)
    • Hydrogen (H)
    • Oxygen (O)
    • Carbon (C)
  • 3. What gas do you think is in the bubbles that form when NaHCO 3 and C 6 H 8 0 7 react?
  • 4. What is air?
    • How do you know when something is a gas?
    • What is gas made of?
    • How do you know when something is matter?
    • Is gas matter?
  • 5. Syringe system
    • Work alone with one system or with a partner using two
    • Clamp the tubing with the binder clip
    • Work with or without air in the syringe
  • 6.
    • Does air take up space?
    • What is your evidence?
    • Does air always take up the same amount of space?
  • 7.
    • Gases in air have mass and occupy space
    • Therefore air is
    • MATTER
  • 8. Compression
    • Air can be forced into a smaller space
    • Air that is forced into a smaller space is called COMPRESSED air
  • 9.
    • When the force is removed, the air
    • EXPANDS
  • 10. Particulate Model
    • Air is composed of particles too small to see
    • Particles are in constant motion
    • There is SPACE between the particles of air