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.

ummmm.... this room is way too loud! please finish your do now

fast- because I’M READY TO DO

SOME SCIENCE. Thanks.

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.

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....

(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--

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

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?

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?

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.

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...

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?

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.