Edit your docs with microsoft word online. After 42 days a 2 0 g sample of phosphorus 32 contains only 0 25 g of the isotope.
While this worksheet was designed for an honors level chemistry class it can easily be modified for lower ability students.
Half life worksheet. Some of the worksheets for this concept are half life graph work name date class name per life and radioactive decay half life practice work atoms half life questions and answers calculating the half life of twizzlers and mmium half life of paper mms pennies puzzle pieces licorice number of undecayed mms. Half life with answer displaying top 8 worksheets found for this concept. What is the half life of phosphorus 32.
5 6 if 250 mg of a radioactive material decays to 200 mg in 48 hours what is the 1 2 life of the material. Half life graphing displaying top 8 worksheets found for this concept. A complete answer key is provided at the end.
What is the half life of a 100 0 g sample of nitrogen 16 that decays to 12 5 g of nitrogen 16 in 21 6 s. Students then complete a simple practical to model half life. Jim deposits 1000 into a bank that pays 8 annual interest compounded continuously.
If an 800 0 g sample of technetium 99 decays to 100 0 g of technetium 99 in 639 000 y what is its. How much sodium 24 will remain in an 18 0 g sample after 60 hours. Some of the worksheets for this concept are half life work half life ws half life graph work name date class half life work radioactive decay half life work half life practice work.
Students are then taught how to calculate half life from a graph using examples. Half life of radioactive isotopes name. All isotopes of technetium are radioactive but they have widely varying half lives.
A worksheet is then completed taken from another tes author. Some of the worksheets for this concept are half life work atoms half life questions and answers half life of paper mms pennies puzzle pieces licorice half life ws radioactive decay half life work half life practice work. Polonium 214 has a relatively short half life of 164 seconds.
Sodium 24 has a half life of 15 hours. When the living thing dies the carbon 14 begins to decay at a steady rate with a half life of 5 730 years. Half life of radioactive isotopes docx sh jir open new.
What percentage of the sample remains after 250 years. 4 a radioactive element has a half life of 1000 years. How many grams of a 10 0 gram sample would have decayed after exactly three half lives.
Half life of carbon 14 5730 y your turn to think 1. 1 2 3 0 125 the amount remaining after 3 half lives 10 0 g x 0 125 1 25 g remain 10 0 g 1 25 g 8 75 g have decayed note that the length of the half life played no role in this calculation. This worksheet allows students to practice solving all types of problems involving half life.
Os 182 has a half life of 21 5 hours. Carbon 14 is a radioactive isotope found in small amounts in all living things. Half life displaying top 8 worksheets found for this concept.
They roll small cubes or dice and take the cubes that land silver side up or on the number 1 out of play.