092910 chem a ihs
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092910 chem a ihs Presentation Transcript

  • 1.  
  • 2.
    • DO NOW: Is a bubble a solid, liquid, or a gas, or something else? What is it?
    • HOMEWORK: Read pages 101- 103; Answers to questions # 1- 7 on page 103 are due tomorrow. Full sentences, neatly and properly written, are required for full credit.
    • AIM: TLW Understand and discuss the need for and the history of the development of the concept of the atom.
  • 3.
    • ummmm....
    • this room is way too loud!
    • please finish your do now fast-
    • because I’M READY TO DO SOME SCIENCE. Thanks.
  • 4.
    • Silently complete the Do Now. Copy your homework.
    • Discuss the Do Now: WHAT IS A BUBBLE?
    • Discuss class topic flow: phase changes and molecules  atoms, molecules, elements, Periodic Table, electrons, bonding... YAY!!!
    • Review Lesson Steps.
    • Discuss yesterday’s mini lab and other makeup work...
    • Safety contract is due.
    • Look over HOMEWORK Pg. 103 #1-7 due tomorrow.
  • 5.
    • WHAT DO YOU – YOU- YOU NEED TO FINISH FOR CREDIT?
    • TELL ME... YESTERDAY’S MINI-LAB?
    • THE CHAPTER 13 READING WORKSHEET?
    • WHAT IS THE BEST USE OF YOUR- YOUR- YOUR TIME RIGHT NOW?
    • I’D ASK BUT... MY VOICE IS NOT GOOD....
  • 6.
    • (student answers to the Do Now Question)
    • liquid
    • liquid and a gas because the air inside the bubble is like helium but it’s not, it’s carbon dioxide- it’s like a balloon
    • gas
    • liquid
    • a liquid gas because it floats
    • a combination
    • a liquid gas- not helium, but--
  • 7.
    • Discuss class topic flow: phase changes and molecules  atoms, molecules, elements, Periodic Table, electrons, bonding... YAY!!!
    • SO FAR:
      • SCIENTIFIC METHOD
      • PHASES: SOLID LIQUID GAS
      • KINETIC ENERGY: BEHAVIOR OF MOLECULES BASED ON TEMPERATURE AND PRESSURE.
    • COMING SOON:
      • ATOMS
  • 8.
    • A bubble is made from liquid soap... or soap with glycerin... or air in water... or bubble gum...
    • The molecules are so tightly attracted to each other that they are bound into a complete spherical shape.
    • Why not a cube?
  • 9.
    • student answers...
    • because it’s not square
    • because the molecules are round
    • because the molecules are tight and they form a sphere shape
    • because a cube is a solid...
    • why not a hollow cube?
  • 10.
    • balloons are made of latex
    • to make a square or a corner- shaped edge... either two or more latex balloons are joined, OR the latex is made very thick in those areas and shaped.
    • What is different about soap bubbles?
    • Not usually thicker in one spot- BUT Where 2 bubbles join- the soap doesn’t bend in a circle...it’s a flat plane.
  • 11.
    • We’ve talked about solids- liquids- gases
    • Bubbles are interesting combos of liquid and gas (imho)
    • NOW we need to transition into the topic of atoms
    • Atoms are small complete structures
    • I figure they are easy to visualize as bubbles
    • mostly empty space
    • the outside layer is the most important when understanding the behavior...
  • 12.
    • question- What happens to a straight pin in a candle flame?
    • hypothesis
    • materials ; two needles,one tweezer,one candle,one lighter .
    • procedure ; hold one pin in the flame with the tweezer & observe and compare
    • data ; record your observations
    • conclusion ; was your hypothesis correct?
  • 13.
    • we have 25 more minutes.
    • you need to write your own hypothesis. and give a reason for it.
    • I can help you with that! only if the room is quiet.
    • you need to make observations and record them.
    • You need to judge whether or not your hypothesis was correct. This is your conclusion. I can help you- if the room is quiet.
  • 14.