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Half-Life Time it takes half of the atoms in a radioactive sample to decay into other atoms. [http://wps.prenhall.com/wps/media/objects/602/616516/Media_Assets/Chapter22/Text_Images/FG22_02.JPG] Click Here for Half-Life Demo
Half-Life The length of a half-life is related to how active the elements are. (This is measured in curies) IsotopeActivity (Curies) U Am Cs I ,500
Half-Life Problem: If I 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 = days
Half-Life Problem: If a fossil only has 12.5% of 14 6 C remaining, how old is it? 5730 x 3 = years
Half-Life Problem: If you start with 25 grams of Xe, which has a half-life of 5.25 days, how much will be left after days?
Half-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.
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 1 Image Slides.
Quiz Review Relative/Absolute Dating. 1. Relative Dating Which layer is older – 1, 3, 6 ?
Radioactive Isotopes and Half Life 1. What is a Radioactive Isotope? What is Radioactive Decay? What is Half Life? (Take notes as we discuss) 2.
25 seconds left….. 24 seconds left….. 23 seconds left…..
Chapter 7.2 – BC Science 10. The time required for half ½ the nuclei in a sample of a radioactive isotope to decay The half life for any radioactive isotope.
Absolute-Age Dating Chapter Absolute-Age dating allows geologists to assign a numerical age to rocks, fossils, or artifacts. Radioactive decay is.
ABC Technology Project Mrs. Kiddle. ABCs of Technology Word 1 Word 2 Word 3 Word 4 Word 5 Word 6 Word 7 Word 8 Word 9 Word 19 Word 20 Word 21 Word 22.
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]
Geologic Dating!. Interpreting Fossil Evidence The natural forces that form sedimentary rock can also reveal fossils that have been hidden in layers of.
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.
Radioactive dating. Radioactive Dating Atoms are the basic building blocks of matter, in the same way that bricks are the basic building blocks of a.
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.
SIMOCODE-DP Software. Automation and Drives SIMOCODE-DP 3UF5 08/04 2 Protection Control Logic Communication SIMOCODE Software Communication Protection.
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. Break Time Remaining 9:59.
The Fossil Record Chapter The fossil record provides evidence about the history of life on Earth. It also shows how different groups of organisms,
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.
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.
24 Hour Clock We are learning how to read the 24 hour clock.
Title Subtitle 1. A. B. C. C. * D. Click to try again! INCORRECT.
ABSOLUT DATING Explanations collected from three online presentations.
1 Copyright © 2013 Elsevier Inc. All rights reserved. Chapter 28.
Jeopardy Topic 1Topic Q 1Q 6Q 11Q 16Q 21 Q 2Q 7Q 12Q 17Q 22 Q 3Q 8Q 13Q 18Q 23 Q 4Q 9Q 14Q 19Q 24 Q 5Q 10Q 15Q 20Q 25 Final Jeopardy.
3 : 00 2 : 59 2 : 58 2 : 57 2 : 56 2 : 55 2 : 54.
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 14 C and 40 K.
5 minutes 4 minutes 3 minutes 2 : 00 1 : 59 1 : 58.
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.
CHAPTER 20 Nuclear Chemistry and Radioactivity 20.3 Rate of Radioactive Decay.
15. Oktober Oktober Oktober 2012.
1 Copyright © 2013 Elsevier Inc. All rights reserved. Appendix 01.
DLMSO Classroom Timer Select a time to count down from the clock above 60 min 45 min 30 min 20 min 15 min 10 min 5 min or less.
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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.
James Ussher (mid 1600's) Georges Buffon (mid 1700s) Lord Kelvin (late 1800's) 75,000 yr 100 m.y. Charles Walcott (1893) 75 m.y B.C.
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Radioactive dating. III. Radioactive Dating A. Used to find ABSOLUTE age in years. B. Radioactive ISOTOPES in rocks DECAY away at a predictable rate.
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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