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Click Here for Half-Life DemoTime it takes half of the atoms in a radioactive sample to decay into other atoms. Click Here for Half-Life Demo [http://wps.prenhall.com/wps/media/objects/602/616516/Media_Assets/Chapter22/Text_Images/FG22_02.JPG]
Half-Life Isotope Activity (Curies) U-235 Am-241 3.24 Cs-137 86.4 I-131 123,500 The length of a half-life is related to how active the elements are. (This is measured in curies)
Half-Life Problem: If 13153I has a half-life of 8.04 days, how long will it take until only 25% of it is left?
Half-Life 2 half-lives = 16.08 days
Half-Life Problem: If a fossil only has 12.5% of 146C remaining, how old is it? 5730 x 3 = years
Half-Life Problem: If you start with 25 grams of 13354Xe, which has a half-life of 5.25 days, how much will be left after days?
Click Here for Radioactive Dating GameHalf-Life Click Here for Radioactive Dating Game
Daltons Law of Partial Pressures The pressure of a gas is equal to the sum of all of its components. P total = P gas#1 + P gas#2 + P gas#3 +…. [http://www.space.gc.ca/asc/img/neemo_daltons_law.gi]f.
[http://farm3.static.flickr.com/2106/ _eecbf318b4_b.jpg] Myanmar Liberia.
Chapter 1 Image Slides Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Radioactive Isotopes and Half Life
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HALF-LIFE Chapter 7.2 – BC Science 10.
Absolute-Age Dating Chapter 21.3.
ABC Technology Project
HIGHER GRADE CHEMISTRY CALCULATIONS Radioactivity and Half-Life Half-life is the time taken for half of a radioisotope to decay. This value is constant.
Lewis Dot Diagrams Show where electrons and bonds exist in covalent compounds. [http://www.bbc.co.uk/schools/gcsebitesize/img/gcsechem_54.gif]
Take from Ten First Subtraction Strategy -9 Click on a number below to go directly to that type of subtraction problems
Radioactive Decay & C- 14 Dating Evolution Unit Chapter 14 p.382.
ABSOLUTE AGE Absolute dating- used to determine the age of a rock or fossil more exactly based on the properties of atoms An atom:
Absolute Dating Chapter 3, Sec.3. Process to find the approximate age of rocks or fossils.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. *See PowerPoint Lecture Outline for a complete, ready-made.
Break Time Remaining 10:00.
The Fossil Record Chapter 17.1.
Unit 2: The Atom Half- Life. Half Life The time required for one half of the nuclei of a radioactive isotope sample to decay to atoms of a new element.
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1 Copyright © 2013 Elsevier Inc. All rights reserved. Chapter 38.
Chapter 4.1. Half-Life Original Sample One half-life Two half-lives Three half-lives Contains a certain One-half of the One-fourth of One-eight of the.
Half Life Physics 2 Additional Science Chapter 13.
Towers of Hanoi
1 Copyright © 2013 Elsevier Inc. All rights reserved. Chapter 116.
We are learning how to read the 24 hour clock
ABSOLUT DATING Explanations collected from three online presentations.
1 Copyright © 2013 Elsevier Inc. All rights reserved. Chapter 28.
Jeopardy Q 1 Q 6 Q 11 Q 16 Q 21 Q 2 Q 7 Q 12 Q 17 Q 22 Q 3 Q 8 Q 13
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High School by SSL Technologies Physics Ex-54 Click The optical power of a lens is a measure of how much the lens bends light. The greater the optical.
Radioactive Dating D.3.1 Outline the method for dating rocks and fossils using radioisotopes, with reference to 14C and 40K.
CALCULATING HALF-LIFE Aim: How can we measure how much of a radioactive element decayed? DO NOW: If we start with 4.5 grams of Radon- 222 and over a period.
Nuclear Chemistry and Radioactivity
15. Oktober Oktober Oktober 2012.
1 Copyright © 2013 Elsevier Inc. All rights reserved. Appendix 01.
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Multiplying binomials You will have 20 seconds to answer each of the following multiplication problems. If you get hung up, go to the next problem when.
Absolute Dating of Rocks and Fossils.
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Chemistry came to be because people wanted to create gold from other elements. There is no “Chemical Reaction That will do this” Chemical reactions involve.
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