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Absolute dating uses the radioactive decay of radioactive isotopes of minerals in rocks to determine the age of the rock. When a radioactive isotope (parent material) decays, it forms a new isotope, a daughter product. The half-life of a radioactive element is the time it takes for half of its atoms to decay into the daughter product.
Feb 20, 2014 · Given: half-life = 2.7 days total time of decay = 8.1 days initial mass of sample = 96 g Unknown: number of half-lives = ? half-lives final mass of sample = ? g Step 2: Write down the equation relating half-life, the number of half-lives, and the decay time, and rearrange it to solve for the number of half-lives.
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Alpha decay can most simply be described like this: 1) The nucleus of an atom splits into two parts. 2) One of these parts (the alpha particle) goes zooming off into space. 3) The nucleus left behind has its atomic number reduced by 2 and its mass number reduced by 4 (that is, by 2 protons and 2 neutrons).
Worksheet I & II - Nuclear Equations For Natural Transmutations (DOC 103 KB) Radioactive Dating and Isotopes Warm Up (DOC 33 KB) Radioactivity at Home (DOC 35 KB) Radioactive Decay and Half Life (DOC 30 KB) Radioactive Decay - Transmutation (DOC 82 KB) Nuclear Chemistry Test Review (DOC 126 KB) Nuclear Chemistry Test Review - Answer Key (DOC ...