CHEMISTRY

1
CHEMISTRY

• Form 2
• ambcol36_at_servihoo.com
• (Mauritius)

2
Objectives

• To recall the term CFC (Chlorofluorocarbon)
• To use the periodic table to list the elements
  found in CFC
• To describe the importance of the ozone layer
• To search for information on CFC and ozone layer
  (using ICT)
• Time 40 minutes
• ResourcesNEPAD lab 16/5/07

3
INTRODUCTION

• Refer to your M.I.E textbook Pg 97
• Recap on acid rain.
• Refer to your book and give me the meaning of
  CFC?
• Use the periodic table from the NEPAD library to
  find out the elements and symbols of the elements
  found in CFC.
• Curriculum Harcourt Chemistry AS Pack Pg
  150 Rotate anticlockwise

4
CFC

• Find out about CFC from the internet
• www.mamma.com
• Search box Chlorofluorocarbon ozone layer
  picture atmosphere
• Sharing about (a) Ozone layer (b) CFC

5
DAMAGE DUE TO CFC (Research samples)
6
Ozone layer (Research samples)

• On October 3, 1999 the size of the Antarctic
  ozone hole is smaller than it was at the same
  time last year. Red colors denote high ozone
  levels blue denotes low.

7
Evaluation

• Questions on CFC and its dangers
• Research on CFC-free propellants and to bring
  samples for the next class

8
Internet Shortcuts

• http//science.nasa.gov/newhome/headlines/essd06oc
  t99_1.htm
• http//www.upei.ca/physics/p261/projects/ozone1/o
  zone1.htm

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