Mod15_L2 Radioactive Dating.doc - Module 15 Lesson 2 Practice Activity Radioactive Dating Author Chris Bires revised 3\/2012 http\/phet.colorado.edu

Mod15_L2 Radioactive Dating.doc - Module 15 Lesson 2...

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Module 15 Lesson 2 Practice Activity Radioactive Dating Author: Chris Bires, revised 3/2012 Simulations at Introduction: Dead things decay into simpler molecules. Radioactive particles decay. Is it the same kind of decay? What does it mean when a substance is radioactive? In this simulation, you will investigate the concept of half-life. Define These Words: (use your notes, your book, or the internet), 1. Neutron- The neutron is a subatomic particle, with no net electric charge 2. Isotope- Each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element 3. Radiocarbon Dating- a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon 4. Half-Life- is the time required for a quantity to reduce to half its initial value 5. Decay (as used in half-life)- Change of an element into a different element, usually with some other particle(s) and energy emitted

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