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half lives

science revision

QuestionAnswer
define the term "half-life" and its significance in radioactive decay its the time taken for half of the atoms in a radioactive sample ti decay. allows scientists to predict how long radioactive material will be active.
what do we use half-life to measure? to measure how fast or slow this radioactive decay happens
whats radiation? the energy that travels through space as waves or tiny particles
what are the timescales of decay for isotopes like carbon-14 and uranium-238 the half-life for uranium 238 is 4.5 billion years and the half-life for carbon-14 is 5730 years
recall the half-life for uranium-238 4.5 billion
whats an isotope? atoms of an element with the same number of protons but different numbers of nutreons
whats radioactive decay? the process of an unstable isotope transforming into a more stable one by releasing radiation
how many years is 1,2,3, an 4 of half-lives 1- 5,730 2-11,460 3- 17,190 4- 22,920
Created by: asuar
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