Radioactive radiation
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Radioactivity | is the spontaneous decay of unstable nuclei with the release of one or more types of radiation.
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| Alpha particle | are helium nuclei made up of two protons and two neutrons.
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| Beta particle | is an electron with a negative charge and a greater ability to penetrate than alpha particle
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| Gamma rays | are high energy electromagnetic radiation. They are not particles and are usually released in conjunction with either alpha or beta particles
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| When atom losses alpha particles- | it changes into an atom of the element two places before it in the Periodic Table. the mass number of the parent atom decreases by four.
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| When atom losses beta particles- | it changes into an atom of the element one place after it in the Periodic Table. The mass number of the atoms stay the same.
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| Half-life of an element | is the time taken for half of the nuclei in any given sample to decay.
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| Radioisotope | is an isotope of an element that emits radiation.
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| Nuclear reactions | -elements can be changed (transmutation)
-change occurs in the nucleus
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| Chemical reactions | -cannot change one element to another
-involves sharing and transfer of electrons.
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Created by:
saoirse sarah
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