Radioactive decay worksheet. The daughter is radioactive: write down its decay.

Radioactive decay worksheet. Jun 4, 2025 · As radioactive elements decay, it emits energy in the form of radiation. This happens by losing high energy alpha or beta particles, or by emitting positrons. e. ) Explore nuclear decay with this worksheet covering alpha, beta, positron, and gamma radiation. 59 KB A Level Physics worksheet containing questions about the lesson: Radioactive Decay Model Answers Included This worksheet covers the following content: -radioactive decay; spontaneous and random nature of decay -causes of unstable nuclei -α-particles, β-particles and γ Problem #5: A radioactive isotope decayed to 17/32 of its original mass after 60 minutes. Every radioactive element has a different half‐ life. Circle the final Stable decay of Th-238. These worksheets are valuable tools for mastering concepts, and they provide a structured approach to solving decay problems. Answer the questions as best as you can. Ideal for high school chemistry. Click on the decay tab (lower left of screen) of the multi-worksheet spreadsheet. Set up this resource in your Science lessons to support children's learning and scientific d. Radioactive Decay Worksheet Alpha decay: nucleus spontaneously emits an alpha particle (symbol: α particle), which is 2 p+ and 2 n (or also the same as a Helium (He) atom). Alpha: Alpha: isotope. Atomic number reactant of the next decay. Our radioactive decay worksheet has been designed to support your teaching as you begin this Radiation topic. We can get an accurate value for the half-life by calculating an average value. 4. Calculate the number of radioactive atoms remaining after each half‐life. Ideal for high school chemistry and physics students. How many half-lives of K-37 will pass after 6. 17 years and americium– 241 has a half‐life of 432. The emission of alpha or beta radiation causes a change in the nucleus. Balancing Decay Reactions Fill in the blank in each of the following decay reactions with the correct decay particle or decayed nucleus that will balance the decay reaction, and also state whether it is alpha or beta decay. Nuclear decay equations 1 Education in Chemistry March 2018 rsc. Use this free activity in your classroom to help students understand decay chains and radioactive decay. What particle is emitted when a Fr-210 nucleus decays to At-206? (a) alpha (b) beta This activity sheet is designed for Secondary school students, specifically Year 9 - 10, to reinforce their knowledge of radioactivity. Complete the equations by adding in the type of decay, the isotope undergoing decay and/or the products. All radioactive isotopes decay completely and disappear within a short time (1 year or less) 30. 91254 = 65. This activity sheet is designed for Secondary school students, specifically Year 9 - 10, to reinforce their knowledge of radioactivity. Practice balancing nuclear equations and solving half-life problems with this radioactive decay worksheet. 00 Add to cart Wish List Specs What's Included Grade 9th - 12th Subject General Science, Physical Science, Physics Tags Activities, Guided Reading Books, Homework, Independent Work Packet, Lectures, Worksheets The number of years listed in the example is the half‐life for each element. Write the number of atoms in the “Number of Radioactive Save time and energy with this ⭐FREE⭐ HALF LIFE WORKSHEET! This set includes 2 worksheets that cover basic half-life calculations and graphing. The 1. Balancing nuclear equations High School Radioactive Decay Chains Help your students understand how alpha, beta, and gamma decay affect an atom’s structure. Discusses the rate at which radioisotopes break down into smaller atomic nuclei, how the rate of radioactive decay is modeled, and introduces decay chains. Radioactive isotopes are unstable, which means that they spontaneously (readily) decay (break apart) into different isotopes or elements. Half‐life is the amount of time it takes for approximately one‐half of the radioactive atoms to decay. Because radioactive decay is a first-order process, the time required for half of the nuclei in any sample of a radioactive isotope to decay is a constant, called the half-life of the isotope. Write the reactions for the decay Honors radioactive decay worksheet Topic: Atomic Structure & Nuclear Chemistry Subject: Chemistry 999+Documents Students shared 4451 documents in this course Level: Aug 17, 2021 · From worksheet author: Simple exercises for Alpha particles decay equations Other contents: Radioactive Decay, Alpha Particles Decay Advertisement | Go Ad Free Created Date11/13/2014 8:28:55 AM Write down the decay reaction, including the daughter nucleus. Why don’t they repel each other and fly apart? Practice problems on half-life calculations, radioactive decay, carbon-14 dating. Need a digital The following image shows how uranium‐238 (a radioactive element) decays and changes to a stable element (lead‐206). Radioactive Decay Worksheet Fill in the missing isotope or emitted particle below 92 238 U → 90 234 Th +___ 84 2 16 Po → ___ + -1 0 β - Practice radioactivity with this worksheet covering nuclear reactions, decay, half-life, and radiation. It will cover the process of an unstable parent nuclide transforming into a daughter nuclide, often resulting in the release of energy and particles. (Strontium-88 is the most abundant stable isotope for Sr. They should be able to tell the different types of nuclear decay apart and what happens when they take place. The document is a review worksheet focused on radioactivity and half-lives, providing questions and answers related to the decay of radioactive substances. Sometimes gamma rays are released but because the release of gamma rays does not affect atomic mass or atomic number the exercise is focused on alpha and beta emissions. We have also included the answer sheet to help save you time when it comes to marking The document is a worksheet focused on decay reactions, including identifying types of decay (alpha, beta, gamma), balancing decay reactions, and writing balanced decay equations. Subject: Physics Age range: 16+ Resource type: Worksheet/Activity File previews png, 2. %PDF-1. Use the graph for questions. 7 years). The following graph shows the radioactive decay curve for Iodine-131. The daughter is radioactive: write down its decay. Carbon -14 is a radioactive isotope found in small amounts in all living things. May 28, 2020 · 3. Set up this resource in your Science lessons to support children's learning and scientific This document contains a practice worksheet on radioactivity with 12 questions. Nuclear Chemistry - Radioactive Decay (answers at end) 1. (1) What is the half-life of phosphorus-32? (2) If phosphorus-32 is used in an experiment to monitor the consumption of phosphorus by plants, what fraction of the nuclide will remain after 30 days? The Decay Series of Uranium Below is the decay series for a Uranium-238 nucleus, showing all of the steps of decay that occur before it finally reaches a stable state. Fill in all blanks of either the type of decay that occurs to get from one step to another, or with the name of the isotope produced at a certain step. This document contains questions about radioactive decay, half-lives, and radiation. It also contains multiple-choice questions about the properties of alpha, beta, and gamma radiation, as well as exercises on predicting decay products and writing nuclear equations. The Decay Series of Uranium Below is the decay series for a Uranium-238 nucleus, showing all of the steps of decay that occur before it finally reaches a stable state. What is the half-live of a radioactive isotope if it takes 6. Predict the decay pathway for 90Sr. Find the half-life of this radioisotope. The worksheet includes various examples and scenarios Homework: Complete and Hand in Half-Life and Radioactive Decay Worksheet (see below) + Chapter 10 Review p. 5 = log 0. These worksheets will test the student’s knowledge about alpha decay, beta decay, and gamma decay. In terms of , how much is present after days? Name: Radioactive Decay and Half-life Problem: To calculate how many years it takes certain substances to decay by the half-life theory. Explore radioactive decay with this worksheet. The half-life tells us how radioactive an isotope is (the number of decays per unit time); thus it is the most commonly cited property of any radioisotope. Fill in tables, answer questions, and solve problems involving radioactive isotopes. 9. Includes equation completion, half-life problems, and decay type identification. There are various ways in which nuclei can decay through emitting radiation Radioactive Decay – Supplemental Worksheet KEY Problem #1: A sample of phosphorus-32 has an initial activity of 58 counts per second. This radioactive decay worksheet is available in two formats: a base level and a more supported version. 4 %âãÏÓ 8 0 obj > endobj xref 8 7 0000000016 00000 n 0000000583 00000 n 0000000666 00000 n 0000000855 00000 n 0000000888 00000 n 0000000998 00000 n 0000000436 00000 n trailer ]>> startxref 0 %%EOF 14 0 obj >stream xÚb```a``bgÒ ‹ Âfaàh a`a$À Å Š   @†ÚùŽ v Ζ‰@š ˆ7 $ ´ endstream endobj 9 0 obj > endobj 10 0 obj >/Type/Page>> endobj 11 0 obj > endobj 12 0 obj LiveWorksheets transforms your traditional printable worksheets into self-correcting interactive exercises that the students can do online and send to the teacher. α decay of 226 , another isotope in the decay series of 238 , first recognized as a new element by the Curies. Procedure: 1. (OpenStax 31. When the living thing dies, the carbon -14 begins to decay at a steady rate with a half -life of 5,730 years; meaning that for every 5,730 years that passes, exactly half of the original amount of carbon -14 has decayed. Study with Quizlet and memorize flashcards containing terms like Strong face, Why do atoms with larger nuclei's fall apart?, Why don't smaller nuclei, like hydrogen or oxygen fall apart? and more. 304 Q’s 2-4,6,8-14 Next Class: Dicium Lab + Chapter 10 Checkpoint Explore radioactive decay and half-life with this integrated science worksheet. Download CHEM1101 Worksheet 2 Model 1: Radioactive Decay A nuclide is a particular nuclear species with a specified number of protons and neutrons. The ultimate destination of this decay in most cases, is the generation of two less massive "daughter" elements that are usually more stable (less radioactive) than the original element. li/EiC218-thehuntison This worksheet accompanies the above article ‘The hunt is on’. If strontium is ingested, the body will treat it chemically as if it were calcium, which means it will be stored by the body in bones. What fraction remains undecayed after 241. It covers topics like identifying the number of protons and neutrons in different nuclei, the properties of alpha, beta and gamma radiation, writing nuclear equations for radioactive decay, and calculating amounts of radioactive material remaining after periods of decay based on half-life. Ideal for high school physics. In terms of , how much is present after days? Nuclear equations are used to represent nuclear decay. When elements undergo radioactive decay, they change from one element to another. Each equation has one or more parts missing. Created Date11/13/2014 8:28:55 AM Write down the decay reaction, including the daughter nucleus. Learn about alpha, beta, and gamma decay, and how to use half-life to date rocks. Practice calculations and learn about radioactive dating. This reading comprehension worksheet is designed to help students learn about Radioactive Decay - Chemistry through engaging passages and questions. Radioactive isotopes give off radiation during the process of radioactive decay. May 21, 2023 · Thorium-232 undergoes radioactive decay until a stable isotope is reached. Created Date5/1/2014 10:57:51 AM A worksheet about radioactivity. We see from the periodic chart that Sr is in the same column as calcium. Distribute the Decay Chain Worksheet and the Periodic Table of Elements. The above percentage calculation will help you compare the decay modeled in this experiment to the half-life decay of a radioactive element. 91254 (this is how many half-lives have elapsed) 60 min / 0. Set up this resource in your Science lessons to support children's learning and scientific Fill in the missing symbol and identify the type of decay taking place. ” Help your students understand half-life with this free classroom activity. Overall, it serves as a Radioactive Decay: Certain types of nuclei are said to undergo radioactive decay when they transform into another type of nucleus. These worksheets are meant to test a student’s knowledge of the half-life, radioactive decay, and their applicability. If we start with 48 atoms of a radioactive substance, how many would remain after one halflife?_________ after two half-lives? _________ after three half-lives First let’s consider the parent isotope decaying to a stable or non-radioactive daughter product isotope or P Æ D. With a full-colour periodic table insert, this resource includes a series of questions on radioactive decay to test children's understanding in a fun and engaging way. , cesium has a half‐life of 30. Jun 17, 2025 · When a radioactive atom decays, it becomes a different element. Have students examine each decay chain, identify the elements (or isotopes) within each decay chain, and determine whether each transformation is due to the emission of an alpha or beta particle. Thorium-232 undergoes radioactive decay until a stable isotope is reached. g. ) The transformation, or decay, is accompanied by emission of certain types of particles ( alpha and beta particles), or of a gamma ray. Alpha Decay Here is an example of alpha decay: In alpha decay, the mass number decreases by An amount of a radioactive iodine has a half-life of days. Write the nuclear equation for the release of a beta particle by Pb-210. having a low count rate) we need to measure the half-life several times. The amount of time that it takes one half of the atoms present to decay is called “half-life. This worksheet of the Radioactive Decay Series of Uranium-238 is a great way to get your students practicing how to write alpha and beta decay equations! The worksheet comes in two versions-- one has parts of each decay equation written in and the other requires the student to write the full decay equation indicated. Analyze isotopes, half-life, radiation, and energy release. 8. The half-life worksheet contains 14 problems dealing with radioactive decay and half-lives. Solution: 17/32 = 0. Half-life calculations feature prominently in these assignments that require a strong understanding of nuclear chemistry principles. The 6 most important ways in which radioactive nuclides decay are: (a) α decay: the nucleus loses an α particle ( He ) (b) β− decay: a neutron in the nucleus is converted into a proton and an electron. In β+ decay a p+ captures an e- and transforms into a neutron. The worksheet includes passages on various topics related to Ra Grab this chance to make nuclear chemistry clear and manageable with this focused set of worksheets on radioactive decay types! Tailored for high school chemistry students in Grades 9-12, this product offers three no-prep worksheets exploring alpha, beta, and gamma decay. In b- decay, a neutron decays into a p+ and an e- which is then ejected. 1: Practice Problems- Nuclear Chemistry and Radioactive Decay (Optional) is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts. 15 seconds? 11. The learning object includes three separate activities: Types of Radioactive Decay: Alpha, Beta, Gamma Guided Reading Worksheet - Physic Rockin' Science Resources Follow 67 Followers $3. 24) → + In the following four problems, identify the parent nuclide and write the complete decay equation in the the periodic table for values Radioactive Decay - Chemistry Reading Comprehension Passages & Questions Worksheets. Radioactive elements decay at different rates (e. Then indicate whether each transformation is due to the emission of an alpha or beta particle by writing in the corresponding symbol. 304 Q’s 2-4,6,8-14 Next Class: Dicium Lab + Chapter 10 Checkpoint Balancing Decay Reactions Fill in the blank in each of the following decay reactions with the correct decay particle or decayed nucleus that will balance the decay reaction, and also state whether it is alpha or beta decay. These worksheets are meant to test a student’s knowledge of radioactive decay. Radiation can be in the form of particles (alpha, beta, or positron) and/or pure energy (gamma rays). 3. This worksheet will explore the phenomenon of radioactive decay, which involves the spontaneous transformation of an atom's nucleus. 53125 n log 0. Practice balancing nuclear reactions. Also state whether it is alpha or beta decay. Seat#: Alpha Decay – For each nuclide given, write a complete alpha decay equation. Although the decay of a particular radioactive nucleus is random, 50% of a collection of radioactive nuclei decays in one half-life (t 1 / 2), just like in chemical chemistry. You need to be able to work out the mass and atomic numbers of nuclei after radioactive decay by balancing the mass numbers and atomic numbers on both sides of nuclear equation. This set includes 2 worksheets that cover basic half-life calculations and graphing. This radioisotope is used in medicine to help diagnose issues with the thyroid such as cancer and hyperthyroidism. 1. 2. Write the nuclear reaction for each of the 11 steps in the decay of A 238 A 2 2 238 Th with each product becoming the reactant of the next decay. Use as a homework assignment, end of lesson assessment, or as part of a station activity. Write the nuclear equation for the decay of Po-210 if it undergoes 2 consecutive alpha decays followed by a Beta decay followed by another alpha decay. It also asks students to list 12. 3 days, the activity was 32 counts per second. Fill in the blank in each of the following decay reactions with the correct decay particle or decayed nucleus that will balance the reaction. Predicting the type of radioactive decay Why are some isotopes radioactive? (The belt of stability) A better question is: “Why is any nucleus stable?” After all, except for hydrogen, all nuclei have multiple positive charges (protons) packed into a very small space (d ~ 10-4 angstroms). This document contains a worksheet with questions about radioactive decay, nuclear reactions, and applications of radioactivity. Includes questions, fill-in-the-blanks, and true/false. (1. Fill in the blank in each of the following decay reactions with the correct decay particle or decayed nucleus that will balance the decay reaction, and also state whether it is alpha or beta decay. Radioactive decay is the random and spontaneous decay of the nucleus of an atom to become more stable, resulting in the emission of alpha, beta or gamma radiation. 2 days for a 72g sample to decay to 18g? 9. This document contains a multi-part physics problem about radioactive decay, particle deflection in magnetic fields, logic gates, and measuring current in copper wires. 53125 (this is the decimal amount that remains) (1/2) n = 0. Note α particle is a helium nucleus! Chapter 14 Radioactivity Worksheet Worked examples Practical 1: The absorption of -radiation by aluminium Practical 2: Simulating the decay of radioactive nuclei using dice End-of-chapter test Marking scheme: Worksheet Marking scheme: End-of-chapter test 8. Apr 1, 2025 · Radioactive decay processes is a key topic in general chemistry, and students often use practice worksheets. This decay is either an alpha decay up or a beta decay down the Periodic Table of Elements. You're Welcome! Pls like:) honors radioactive decay instructions: complete each section of this report and answer all questions in complete sentences for full Decay Chain Worksheet-Teacher Answer Key Examine each decay chain and identify the element. 125 Radioactive decay & half-life (worksheet) Radioactivity is a random process. 10. Explore radioactive decay with this worksheet covering exponential decay, half-life, background radiation, and experimental analysis. They should be able to tell the difference between them and what happens when these reactions occur. Other problems involve using half-life calculations to determine values like the original amount of a substance The net result of α, β- or β+ decay is a new element. Looking at half-life, your class will learn how to read the graph and record their findings. Nuclear equations are used to represent nuclear decay. (Nuclei that decay are said to be unstable. Feb 5, 2023 · A nucleus that is not permanently stable is radioactive and eventually decays into another. Decay Chain Worksheet Examine each decay chain and identify the element. Suitable for: Grade 7, Grade 8, Grade 9, Grade 10, Grade 11, Grade 12. Whether you're introducing This worksheet of the Radioactive Decay Series of Uranium-238 is a great way to get your students practicing how to write alpha and beta decay equations! The worksheet comes in two versions-- one has parts of each decay equation written in and the other requires the student to write the full decay equation indicated. It involves calculating radioactive decay over time, identifying particle charges, drawing circuit diagrams, completing logic gate truth tables, and choosing appropriate equipment to set up circuits and take measurements. Half Life of Radioactive Isotopes Name: Date: 1. sample has decayed, leaving three-quarters of the sample undecayed. It covers concepts such as calculating remaining quantities after specific half-lives, determining the age of samples, and performing dimensional analysis for decay calculations. ) (Strontium-90 is a particularly hazardous radioactive isotope because, as an alkali earth metal, it will substitute for calcium in bones and teeth. Did this activity perfectly model the concept of half-life? A radioactivity worksheet covering isotopes, radioactive decay, radioisotopes, and nuclear chemistry concepts. After 12. Don’t forget to count half-lives carefully. The half‐life of each element is shown in years and days. High School Physics. 35 MB docx, 28. 37 KB docx, 633. But despite the nature of the reaction the law of conservation of matter still applies and the equations are balanced the same way. 53125 n = 0. 11. It asks the learner to calculate half-lives based on provided count rate data, explain different types of radiation and their properties, define key radiation terms, and describe sources and effects of background radiation. Practice nuclear decay reactions with this worksheet. I have included the answer key for easy grading. Ideal for high school physics students. Homework: Complete and Hand in Half-Life and Radioactive Decay Worksheet (see below) + Chapter 10 Review p. Many problems involve calculating the fraction of a radioactive substance remaining after a given number of half-lives using the fraction (1/2)^n, where n is the number of half-lives. Half-Life Data-Teacher Answer Key Hypothesize what half‐life is: Half‐life is the amount of time it takes for approximately half of the radioactive atoms in a sample to decay into a more stable form. When dealing with weak radioactive sources (i. Cs-137 is produced as a waste product in nuclear fission reactors. Poses special problems because its daughter is a radioactive noble gas. Decay chain explorer Decay chain explorer is a learning object that investigates natural and artificial decay chains formed by radioactive elements. 75 min n = 66 min (to two Bring the wonders of Radioactive Decay Worksheet chemistry 3rd grade activities to your classroom with this engaging set of Radioactive Decay Worksheet reading comprehension passages Worksheets and Activities ! Perfect for middle school or high school science Worksheets and Activities students, this. 84 years? 10. Most damaging nuclear decay to the human body Least penetrating nuclear decay 0 Write the nuclear equation tor the decay ot Yo-210 It It undergoes 2 consecutive alpha decays tollowea by a beta decay followed by another alpha decay. It includes fill-in-the-blank and short answer questions about predicting and describing radioactive decay, writing nuclear reactions, calculating radioactive decay over time, and discussing the roles of components in a nuclear reactor. Diagrams may be required to fully explain atomic structure and radioactive decay processes. oto5ni xixffj iuy5wn boapz 2rhy j42 wt8 grvn tg7el ieb8guz