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9 Cards in this Set
- Front
- Back
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Radioactivity |
The emission of subatomic particles or high energy electromagnetic radiation by the nuclei of certain atoms. |
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Types of Radioactivity |
Alpha Decay Beta Decay Gamma Ray Emission Positron Emission Electron Capture |
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Alpha Decay |
Unstable nucleus emits a particle composed of 2 protons and 2 neutrons. |
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Beta Decay |
Unstable nucleus emits an electron. |
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Gamma Ray Emission |
Gamma ray photon emitted with an alpha particle. |
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Positron Emission |
The antiparticle of an electron |
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Electron Capture |
Involves an electron being absorbed instead of emitted. |
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Ionizing Power |
Ability of radiation to ionize molecules and atoms. Alpha>Beta=Positron>Gamma |
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Penetrating Power |
Ability of radiation to penetrate matter Gamma>Beta=Positron>Alpha |
