October 22

October 22

OBJECTIVE: Students will learn how soap affects the stickiness of water in order to analyze its properties.
WARM-UP: 1. Solutions like tomato juice or vinegar that measure a pH lower than pure water are _________.
F. buffers
G. acid
H. bases
J. neutral

2. Which of the following is not a property of water?
F. It is able to stick to itself.
G. It is an excellent solvent.
H. It is more dense as a solid than a liquid.
J. It is responsible for capillary action.

3. Water molecules are polar, with the
A. oxygen side being slightly positive and the hydrogen side being slightly negative.
B. oxygen and hydrogen sides being slightly positive.
C. oxygen and hydrogen sides being slightly negative.
D. oxygen side being slightly negative and the hydrogen side being slightly positive.

4. In circulatory systems, a large part of the fluid is water. For example, human blood plasma is approximately 90% water. What property of water makes it ideal material for transporting necessary chemical substances?
F. It evaporates at 1000 C.
G. It freezes at 00 C.
H. It is a solvent for many substances.
J. It is made of hydrogen and oxygen.

5. Which of the following is not a reason water is attracted to other water molecules?
A. Water has magnetism.
B. Water is a polar molecule.
C. Water makes hydrogen bonds with other water molecules.
D. Water is covalently bonded.

Vocabulary:
1. Compound
2. Ionic Bond
3. Ion
4. Covalent Bond
5. Molecule
6. van Der Waals Forces


P~O~A
1. Warm Up and Vocabulary
2. Hand in Homework
3. Review water properties (2-2 powerpoint and handout)
4. Penny for your drops activity
5. Closure

Homework Due:
Section 2-1 Assessment 1-6 and MUST COMPLETE ALL 6 questions

Tonight’s Homework:
1. Finish Lab if you did not complete it
2. Section 2-2 (page 43) 1-5

EXTRA CREDIT (Due the 28th of October)
Bring in any 5 of the following supplies for 20 points extra credit
-paper towel
-soap
-hand sanitizer
-tissues
-Pack of colored pencils
-disinfecting wipes
-national geographic magazines
-pack of markers
- Glue Sticks (3 =1 item must bring 3)