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. 1. Silently complete the Do Now. Copy your homework. 2. Discuss the Do Now: WHAT IS A BUBBLE? 3. Discuss class topic flow: phase changes and molecules  atoms, molecules, elements, Periodic Table, electrons, bonding... YAY!!! 4. Review Lesson Steps. 5. Discuss yesterday’s mini lab and other makeup work... 6. Safety contract is due. 7. 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.