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### We found 82 resources with the concept half lives

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#### Crash Course: Chemistry

Loosely based on the 2012 AP Chemistry curriculum, a series of 46 videos introduces high schoolers to organic chemistry. The videos model how to reason through problems, recognize different organic chemicals, their uses, and use the...

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#### Krista King Math: Derivatives

Everything calculus scholars need to know about derivatives can be found in this 31-resource playlist. The collection defines the derivative and includes derivative rules, chain rule, derivatives of trig functions, derivatives of...

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#### Common Core Algebra 1

The Flipped-Mastery Classroom offers an entire Algebra 1 class aligned to Common Core Standards. Lessons begin with an instruction video. Learners can pause the video to take notes and replay the video to check for understanding. The...

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#### Common Core Algebra 1, Unit 7: Exponential Functions

The three lessons in the Exponential Functions Unit cover exponential growth, exponential decay, and linear vs. exponential. In the first lesson, learners watch a quick review on function notation as they prepare to learn more about...

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#### Radioactive Dating Game

Uranium 235 has a half-life of over 700 million years and is the fuel used in the atomic bomb dropped on Hiroshima, Japan. Pupils see the half-lives and decay rates of Carbon-14 and Uranium-238. They also take measurements of these two...

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#### Nuclear Chemistry

Radioactivity and nuclear chemistry, transmutation of elements and isotopes, calculating half lives and radioactive decay. Introduce these concept and more with a video on carbon dating. The show concludes with an explanation of...

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#### Radioactive Decay Model

Toss 100 pennies (or poker chips or any other two-different-sided objects) and remove all of those displaying tails. Line them up and repeat. The lines of pennies collected get smaller each time, successfully representing half-life.

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#### Get a Half-Life Student Worksheet

Young scientists use a worksheet to help them perform a lab on the decay of a radioactive element. The worksheet serves as both a task guide and a lab sheet for pairs of learners. This activity requires a calculator and has excellent...

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#### 2000 U.S. National Chemistry Olympiad National Exam - Part I

The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...

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#### Nuclear Radiation

Through colorful diagrams and simple text, viewers are introduced to nuclear radiation. They discover alpha, beta, and gamma rays; they balance nuclear equations. You will impart important information to your chemistry class and give...

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#### Unit 7 Review: Exponential Functions

Grow to review exponential functions. With the unit review, learners identity the type of function for given equations, such as exponential growth, decay, or linear. Pupils write the correct function for situations and then use the given...

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#### Linear vs. Exponential

Linear or exponential?. Learners watch an informative video comparing situations that may be modeled by either a linear or exponential relationship. Pupils determine the type of relationship and then create a function that models the...

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#### Grades 9-12 Earth Science

How has Earth changed over time? Pupils explore the topic in a differentiated instruction unit on the geological time scale. After a pre-assessment to gauge knowledge, class members divide into groups based on their ability levels and...

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#### TV Forensics: What Do CSIs Actually Do?

TV dramas tend to exaggerate the forensic science components. Learn what true forensic chemistry looks like in an installment of a larger series covering reactions. Viewers see that chromatography, mass spectrography, and methodical...

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#### How Do We Know the Half Life of Uranium and Can You Collect Gold Once It's Dissolved in Acid?

Participate in a little chemistry Q and A! Part of a larger series on reactions, an informative lesson takes questions from viewers and crafts responses. The video explains how we arrive at an accurate half-life of a radioactive...

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#### 2014 AP® Chemistry Free-Response Questions

More than half of AP Chemistry test takers earn a high enough score to get college credit. Improve that statistic by using past test questions including precipitate, molarity, and chemical equations to prepare for a future exam. The...

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#### Half-Life

Scholars shake their way to understanding half-life with the help of candy. They observe and record which side candy lands on to graph the exponential decay in the fifth instructional activity of seven integrating chemistry and algebra....

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#### Isotopes and Half-Life: What Are Medical Isotopes?

How do medical professionals use radiation without doing more harm than good? Budding nuclear chemists begin their study of all things radioactive with a video from the JFR Science playlist. Topics include differences between isotopes,...

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#### Finding Half Life

When will half of the substance be gone? Using the exponential decay formula, the video finds the half-life of radium-226. The 29th installment in a 31-part series goes on to discuss that the calculations are the same independent of the...

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#### Radiation and Radioactivity

Explore the science of radioactivity! A very thorough video lesson begins with an explanation of the chemical structure of radiation. It includes descriptions of benefits of radioactivity and half-life calculations.

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#### Marie Curie's Classroom

What makes some elements stable and others radioactive? Scholars adjust the number of protons and neutrons in an element then observe its decay. The simulation includes a graphical representation and the chemical formula, as well as...

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#### Radiocarbon Dating

How do we know how long ago a dinosaur lived or an ancient fire pit was used? Scholars learn about the application of carbon dating and half lives to discover things about the past. They adjust the amount of radioactive carbon in the...

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#### Chemical Kinetics

Not all chemical reactions happen at the same rate because some, like explosions, occur quickly and some, like rusting, occur over time. Here, learners explore chemical reactions and their rates in the 16th lesson of 36. Through readings...

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#### Alpha Decay

There are different types of radioactive decay, and alpha decay is when there are too many protons in a nucleus. Here is a simulation that shows alpha particles being emitted from a polonium nucleus. Learners see how radioactive decay...