DIRECTIONS:
1.
Select
a new page in your Spiral lab notebook.
2.
Press
hard (with a blue or black pen only – NO
PENCIL OR FELT TIPPED PEN) when writing in your Spiral lab manual.
3.
Fill
in the top portion of the first page only. Take the following steps:
step 1 – print your last name followed by
printing your first name in the box entitled NAME;
step 2- Place the name Honors Chemistry
Chapter 18 Overview in the box entitled EXPERIMENT/SUBJECT; step 3 – leave EXP
NUMBER blank;
step 4 – Place the due date 9 May 2008 in the box entitled DATE; step 5 – leave LAB
PARTNER and LOCKER/DESK NO. blank; step 6 – place Chemistry period ___, what number? ___
(press hard) in the box labeled COURSE AND SECTION NO.
4.
Read
Chapter 18 and summarize what you read using this outline as a guide.
5.
Chapter
18 Overview is due:
FRIDAY 9 MAY 2008: NOT ACCEPTED AFTER THIS
DATE!!!!
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REMINDER
– GRADING SYLLABUS: BASED UPON CLARITY AND NEATNESS
1.
A
= THREE PAGES
2.
B
= TWO PAGES
3.
C
= ONE PAGE
*********************** CHAPTER 18 OUTLINE ***********************
á
ELECTRON
TRANSFER REACTIONS
-
OXIDATION-REDUCTION
REACTIONS IN CHEMISTRY INVOLVES ELECTRONTRANSFER BETWEEN OBJECTS.
a.
OXIDATION
IS A LOSS OF ELECTRONS
b.
REDUCTION
IS A GAIN OF ELECTRONS
c.
AN
OXIDIZING AGENT ACCEPTS ELECTRONS
d.
A
REDUCING AGENT PROVIDES ELECTRONS
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ELECTROCHEMISTRY
AND ITS APPLICATION-
-
ELECTROCHEMISTRY
IS A STUDY OF THE INTERCHANGE BETWEEN CHEMISTRY AND ELECTRICAL ENERGY
-
THERE
ARE TWO TYPES OF ELECTROCHEMICAL DEVICES; GALVANIC CELL AND ELECTRICAL CHEMICAL
BATTERY
-
THE
GALVANIC CELL IS A DEVICE FOR CONVERTING CHEMICAL ENERGY INTO ELECTRICAL ENERGY
a.
CONSISTS
OF SEPARATE COMPARTMENTS FOR OXIDIZING AND REDUCING AGENTS WHICH ARE CONNECTED
BY A SALT BRIDGE AND A WIRE.
b.
IT
HAS AN ANODE WHICH IS AN ELECTRODE AT WHICH OXIDATION OR LOSS OF ELCTRONS OCCURS.
c.
IT
HAS A CATHODE WHICH IS AN ELECTRODE AT WHICH REDUCTION ORNGAIN OF ELCTRONS
OCCUR.
-
CORROSION
IS THE OXIDATION OF METALS TO FORM MAINLY OXIDES AND SULFIDES.
-
ELECTROLYSIS
IS THE USE OF ELECTRICAL ENERGY TO PRODUCE A CHEMICAL CHANGE.