CHAPTER 22 Nuclear Chemistry - PowerPoint PPT Presentation

1 / 9
About This Presentation
Title:

CHAPTER 22 Nuclear Chemistry

Description:

Nuclear Chemistry Types of Nuclear Particles Alpha particle ( ) Composition: 2 protons, 2 neutrons Symbol: 42He or Charge: +2 Penetrating power: low, stopped by ... – PowerPoint PPT presentation

Number of Views:176
Avg rating:3.0/5.0
Slides: 10
Provided by: Mrs1234
Category:

less

Transcript and Presenter's Notes

Title: CHAPTER 22 Nuclear Chemistry


1
CHAPTER 22Nuclear Chemistry
2
Types of Nuclear Particles
  • Alpha particle (a)
  • Composition 2 protons, 2 neutrons
  • Symbol 42He or a
  • Charge 2
  • Penetrating power low, stopped by paper or cloth

3
  • Beta particle (ß)
  • Composition 1 electron
  • Symbol -1 e
  • Charge -1
  • Penetrating power 100 times greater than alpha,
    stopped by wood or concrete

4
  • Gamma ray (? )
  • Composition electromagnetic waves
  • Symbol ?
  • Charge 0
  • Penetrating power 1000 times greater than beta,
    stopped by lead or 6 feet of concrete

5
Fission vs. fusion
6
F ission
  • splitting a nucleus into two or more smaller
    nuclei
  • 1 g of 235U 3 tons of coal

7
F ission
  • chain reaction - self-propagating reaction
  • critical mass - mass required to sustain a
    chain reaction

8
Fusion
  • combining of two nuclei to form one nucleus of
    larger mass
  • thermonuclear reaction requires temp of
    40,000,000 K to sustain
  • 1 g of fusion fuel 20 tons of coal
  • occurs naturally in stars

9
Fission vs. Fusion
FISSION
FUSION
  • fuel is abundant
  • no danger of meltdown
  • no toxic waste
  • not yet sustainable
  • 235U is limited
  • danger of meltdown
  • toxic waste
  • thermal pollution
Write a Comment
User Comments (0)
About PowerShow.com