nuclear chemistry chapter 10. homework assignment chap 10 sections 1 - 3 only review questions (p...
Post on 21-Dec-2015
218 views
TRANSCRIPT
Nuclear Nuclear ChemistryChemistry
Chapter 10
Homework AssignmentHomework AssignmentChap 10Chap 10
Sections 1 - 3 onlySections 1 - 3 only
Review Questions (p 211): 1 – 6Review Questions (p 211): 1 – 6
Multiple Choice Questions: 1 - 3Multiple Choice Questions: 1 - 3
ParticleParticle CompositionComposition ChargeCharge PenetrationPenetration
AlphaAlpha
αα2 protons and 2 protons and
2 neutrons2 neutrons2+2+ stopped by stopped by
paperpaper
BetaBeta
ββan electronan electron 1-1- stopped by stopped by
aluminumaluminum
GammaGamma
γγpure energypure energy 00 stopped by stopped by
leadlead
Radioactive particlesRadioactive particles
Fig 10.1 Origins of Radiation Exposure in the USFig 10.1 Origins of Radiation Exposure in the US
Natural background (81%):
Biggest source: Radon-222
Medicine (15%) Consumer products (4%)
Biological Effects of Radiation
• Radiation absorbed dose (rad)
• 1 rad = 1 x 10-5 J/g of material
• Roentgen equivalent for man (rem)
• 1 rem = 1 rad x Q
Quality Factor
= 10 = 1
Units of Radiation
Table 10.1