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Rev. Notes > IGCSE > Radioactivity
 
 
Previous Topic Radioactivity Next Topic

Topics
 

Radioactivity and radioactive - rays

Experiment to distinguish three kinds of radioactive rays Background radiations
Alpha rays Beta rays Gamma - rays
Radioactive decay

Half - life

Safety precautions

Isotopes

The radioactive isotopes Uses of radioactive isotopes
Uses of radioactive isotopes - Medicines Uses of radioactive isotopes - Industries Uses of radioactive isotopes - Agriculture
Uses of radioactive isotopes - Carbon dating Artificial radioactivity
 

Safety precautions

  • Point away from people
  • Label the container
  • Store in a lead lined container
  • Lock away when not in use
  • Handle with tongs
  • Wear protective clothing. The minimum requirements include a laboratory coat, safety glasses and close-toed shoes.

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View Comments on this Chapter - Total Comments (16)
 
Chandiya Said :
THis is awesone and really really useful
 
  01/11/16 07:16 PM
   
Muhammad Hasnain Said :

Great work, please keep it up!

 
  10/07/15 04:07 PM
   
yas Said :
it says that the 3 types of radioactive rays can be distinguished from one another by a simple experiment but what is the experiment?
 
  13/04/15 11:10 PM
   
Sc Said :
Btw this is a great website :-)
 
  01/04/14 08:12 PM
   
Sc Said :
Where are the figures?
 
  01/04/14 08:00 PM
   
jjanedan Said :
Manufacturer of slip rings. We commit to the development, design, and marketing of high-quality. Main products include slip ring, ring slip, slip rings,slipring,rotary joint and so on. collector rings http://www.electricslipring.com/
 
  15/11/13 09:20 AM
   
julia kobeissi Said :
in isotopes , you said in thr figure below and theres no figure ?
 
  05/06/13 12:17 PM
   
Ryouta Said :
What is the charge on Beta particles then????? Coz Alpha have 2 charge, and Gamma are neautral...
 
  21/03/13 10:27 AM
   
kainat Said :
all the radium formed when the earth condensed out of the suns atmosphere should have decayed away to an unmeasurably small amount by now. why?
 
  02/09/12 03:09 PM
   
burhanuddin Said :
i have my mocks on monday < will dis help me?
------------------------------------------------------------------------------------- Admin Replied:

Definitely, it will help you.

 
  11/08/12 09:45 PM
   
Mohammad Said :
Can you give the definition for ionization
 
  13/05/12 08:44 PM
   
Frank Said :
It says "Carbon-1" somewhere in the beginning. Do rectify it.
------------------------------------------------------------------------------------- Admin Replied:

Thanks for your comments. Now that is rectified.

 
  24/01/12 07:12 PM
   
Sagnik Said :
If elements with the atomic mass of >84 are the only elements that undergo radioactivity, then explain how Carbon-14 can undergo radioactive decay.
------------------------------------------------------------------------------------- Admin Replied:

Stability of a nucleus depends upon the neutron/proton ratio. If this ratio is too small or large, the nucleus will be unstable. The neutron/proton ratio in carbon-14 is too large, making the nucleus sufficiently unstable that it emits a beta particle, converting to nitrogen-14.

Same situation of unstability is there in the elements having atomic number greater than 82.smiley

 
  24/01/12 07:01 PM
   
Swaira Said :
undefined
 
  01/11/11 07:14 PM
   
Abdullah Said :
What is the speed of light?
------------------------------------------------------------------------------------- Admin Replied:

Speed of light is 299 792 458 m / s

 
  31/10/11 06:41 PM
   
Hadaya Said :
What is the mass of the proton and alpha particle?
------------------------------------------------------------------------------------- Admin Replied:

Mass of a proton = 1.66 x 10^-27kg Mass of neutron = 1.6749 x 10^(-27) kg The rest mass of the alpha particle (which is equal to the mass of two protons and two neutrons) amounts to 6.64424 x 10^-27 kg.

 
  31/10/11 06:13 PM
 

 

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