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Radioactive Elements

Published on Nov 20, 2015

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PRESENTATION OUTLINE

Radioactive Elements

Aria Odendaal and Robbie Venerus
Photo by LimeTech

Radioactive Decay

  • When atomic nuclei of radioactive isotopes release particles.
  • A chemical element having an unstable nucleus
Photo by Leo Reynolds

Nuclear Reactions

  • A process in which two nuclear particles collide.
  • Can involve more than two particles

Marie Curie

  • She opened up the science of radioactivity
  • She won two Nobel prizes
  • Aplastic Anemia - from exposure to radioactive material.

Alpha Decay

  • A type of radioctive decay
  • When an alpha particle, 2 protons + 2 neutrons, is released by an atom.
Photo by TonZ

Beta Decay

  • A neutron in an unstable nucleus changes into a negatively charged beta particle and proton.
Photo by ** RCB **

Gamma Radiation

  • Another type of radioactive decay.
  • Gamma rays (gamma radiation) consist of high energy waves and have no charge.
Photo by jurvetson

Effects of Nuclear Radiation

  • Alpha: Bad burn to human skin
  • Beta: can pass through human skin and damage cells.
  • Gamma: cause severe damage
Photo by ssoosay

Radioactive Dating

  • Dating: estimating when radioactive decay will occur
  • Half-life: The time it takes for half of the atom to disinegrate
Photo by Matt. Create.

Uses in Medicine

  • To treat cancer and try to kill the cancer cells
  • Used to diagnose different diseases or conditions one might have. ex: MRI

Nuclear Energy

  • Energy that can be released after nuclear fusion or fission.
  • Especially when used for electricity.
Photo by rodrigomezs