Note that this second two days does not see the activity drop to zero, only that it halves again. Easy-to-understand homework and revision materials for your GCSE Physics (Single Science) Edexcel '9-1' studies and exams. Unbeatable support throughout the qualification. The activity of a radioactive substance is measured in Becquerel (Bq). Study Mind. This page covers the following topics: 1. Last time we talked about knowing your equations, and how you should have prepared for these before the exam. June 2016 Physics/ Science Unit P1: Universal Physics (5PH1H/01) - Higher. xmaceythompsonx8. Half Life Questions. Half-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve or for the count rate to halve. Titanium has a half-life of 63 years. Report this resourceto let us know if it violates our terms and conditions. Content on this page has been fully or partially proofread by Jonas Virsilas MChemPhys (Hons). Clear and accessible exam papers with detailed guidance. (2) Q7. Download Paper - Download Marking Scheme. These signals can be converted into clicking sounds, giving a count rate in clicks per second or per minute. Fission and Fusion Questions. After a year, there is only 500 000 atoms left un-decayed.What is the half-life of this material? They contain a high number of challenge tasks that are built into the lesson resources to stretch even the most able. The time it takes for the number of radioactive nuclei to quadruple. Specification. 356 terms. A very small number of the resources require access to Pearson Active Teach, however, the vast majority are included in the presentations or as a separate file. Physics Edexcel Website Full Specification You will either be studying Combined Science which gives you two GCSE grades, or Physics (along with Biology and Chemistry) as part of Triple Science giving you three Science GCSE grades. All questions are set primarily by topic, not by paper. Keeping this cookie enabled helps us to improve the products and services we offer. In the diagram above the initial activity, Therefore, the half-life of this isotope is, Therefore, the sample has undergone 2 half-lives, 1 year divided by 2 is half a year or 6 months. Half Life and Uses. It is impossible to predict exactly when a nucleus will decay or which nucleus in a sample will decay. Give two reasons why this might not be good idea. More information about our Privacy Policy, Edexcel International GCSE Physics Chapter 23 Radiation and Half Life Learning Plan. 4. Half of 1,200 is 600, half of 600 is 300. Best of luck! The half-life is approximately 20 seconds Question 2 The mass of a radioactive substance over a 8 hour period is shown in the table below. CIE IGCSE Physics: Revision Notes CIE IGCSE Physics > Revision Notes Detailed revision notes for the CIE IGCSE 0972 / 0625 syllabus 1.1 Length & Time 1.2 Motion 1.3 Mass & Weight 1.4 Density 1.5 Forces 1.6 Momentum 1.7 Energy, Work & Power 1.8 Pressure 2.1 Simple Kinetic Molecular Model of Matter 2.2 Thermal Properties [] Motion and forces . These MME Physics revision cards cover all the major topics within the AQA GCSE Physics specification. Foundation Questions. The account is called physicsflash. So it takes two half-lives to drop from 1,200 Bq to 300 Bq, which is 10 days. Study with Quizlet and memorize flashcards containing terms like What does half-life mean and why is it used?, , and more. Some questions may require you to carry out calculations, so dont forget to bring your calculator to the examination. The graph below shows how the activity of a sample varies with time.Determine the half-life of this material. Our tips from experts and exam survivors will help you through. Our customer service team will review your report and will be in touch. Full lessons with resources for those teaching GCSE Edexcel Physics Topic 6 for Combined Science. For each of the exam boards below, there are revision notes, factsheets, questions from past exam papers separated by topic and videos. This reduction can be expressed as net decline after a certain number of half-lives. Half Lives - GCSE Physics (Combined) Edexcel Revision - Study Rocket Half Lives Half Lives Radioactive decay is a random process. Last minute stuff. Edexcel GCSE Physics Past Papers We have worked hard to compile every Edexcel GCSE Physics past paper by topic and exam board! Net decline can be expressed as (1/2) where x is the number of half-lives elapsed. a fraction - a of a of a of a remains which is x x x = 1/16 of the original sample, a decimal - 1/16 = 0.0625 of the original sample, 15 years is three half-lives so the fraction remaining will be (), Uses and dangers of radioactivity - Edexcel, Sample exam questions - radioactivity - Edexcel, Home Economics: Food and Nutrition (CCEA). The number of decaying nuclei in a sample reduces with time due to radioactive decay. GCSE Physics Edexcel Paper 1. mrburditt. It is not possible to say which particular nucleus will decay next but given that there are so many of them, it is possible to say that a certain number will decay in a certain time. Example Question 3 A student suggests replacing a coal power station with solar panels on the same site. This reduction can be expressed as net decline after a certain number of half-lives. Although half-life is not affected by chemical and physical reactions, different isotopes have different values for half lives, which come with different hazards. 2. 5.66782) Read more , Know what to expect. So one half-life is five days. The time it takes for the number of non-radioactive nuclei to halve. This video covers:- How radioactive decay works- What activity means- The two definitions of half-life- How to show radioactive decay on a graph- How we can . Draw a graph of mass against time and use it to determine the half-life of the substance. Describe what this means for a sample of titanium.undefinedThe half-life of titanium says that half of the radioactive nuclei in the sample of titanium will decay in 63 years. GCSE Science; GCSE Maths; GCSE Further Maths (Level 2, Level 3, FSMQ) GCSE History; GCSE Citizenship; GCSE Geography; For Students . If you are teaching only Combined Science the CP6 bundle will be more suited to you. The half-life of cobalt-60 is 5 years. The correct answer is 'Geothermal, the tides and hydro-electricity'. Upgrade and access all questions. If you disable this cookie, we will not be able to save your preferences. Full Lesson PowerPoint and resources to teach the GCSE 9-1 specification Physics lesson on Half-Life. Scientists cannot tell when a particular nucleus will decay but they can use statistical methods to tell when half the unstable nuclei in a sample will have decayed. 1. The time it takes for the number of nuclei of a sample of radioactive isotopes to decrease by half, The diagram shows how the activity of a radioactive sample changes over time. Scientists can measure the half-lives of different isotopes accurately: Uranium-235 has a half-life of 704 million years, This means it would take 704 million years for the activity of a uranium-235 sample to decrease to half its original amount, So after 5700 years, there would be 50% of the original amount of carbon-14 remaining, After two half-lives, or 11 400 years, there would be just 25% of the carbon-14 remaining, With each half-life, the amount remaining, The time it takes for the activity of the sample to decrease from 100 % to 50 % is the half-life, It is the same length of time as it would take to decrease from 50 % activity to 25 % activity. This could be stated as a fraction, decimal or ratio. Download Paper - Download Marking Scheme. 1. It gives an electrical signal each time radiation is detected. GCSE Physics revision Energy stores and systems Conservation and dissipation of energy Current, potential difference and resistance Mains electricity Energy transfers Static electricity Changes of state and the particle model Internal energy and energy transfers Particle model and pressure Atoms and isotopes Atoms and nuclear radiation Nuclear fission and fusion Forces and their interactions . It gives an electrical signal each time radiation is detected. Nuclear Fission and Fusion. All text is lifted from and copyright of Chapter 24 of Edexcel IGCSE Physics Student Book and the accompanying revision guide. Keeping this cookie enabled helps us to improve our website. 1 task in the PowerPoint requires the use of worksheets from the Pearson's ActiveLearn but could easily be replaced by other worksheets Tes paid licence How can I reuse this? Half-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve or for the count rate to halve.. 274 terms. Figure 4 shows a Geiger-Mller (GM) tube used for measuring radioactivity. Here you'll find everything you need to prepare for GCSE (9-1) Science including our specification and sample assessment materials. Edexcel GCSE Physics worksheets These worksheets are provided for private study only and are not to be used for any financial gain. Mark Scheme. The same amount of a radium sample is kept outside the fridge. Note that nuclear fuel, i.e. This website and its content is subject to our Terms and Suppose a sample has a count rate of 3,200 Becquerel (Bq) at the start, then its count rate after 8 days would be 1/16th of 3,200 Bq = 200 Bq. (i) Use the graph to find the half-life of the material. GCSEs & IGCSEs AQA CAIE Edexcel Edexcel (IGCSE) OCR A OCR B WJEC (England) WJEC (Wales) A-Levels from 2015 AQA Edexcel OCR A OCR B WJEC (England) WJEC (Wales) International A-levels CIE CAIE (exams 2022) Edexcel Half-life is defined as: The time taken for half the undecayed nuclei to decay or the activity of a source to decay by half In other words, the time it takes for the activity of a sample to fall to half its original level Different isotopes have different half-lives and half-lives can vary from a fraction of a second to billions of years in length Mark Scheme. https://goo.gl/gQhr7S to unlock the full series of GCSE Physics & Combined Science videos created by A* students for the new 9-1 OCR, AQA and Edexcel specifi. Radioactive decay is a random process. London WC1R 4HQ. Pearson Edexcel Level 1/Level 2 GCSE (9-1) in Physics (1PH0) First teaching from September 2016 First certification from June 2018 Issue 3. . Fast expert advice whenever you need. Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. A very small number of the resources require access to Pearson Active Teach, however, the vast majority are included in the presentations or as a separate file. Edexcel Physics / Chapter 23 Radiation and Half Life / Search. My lessons are comprehensive, well organised and promote high levels of pupil engagement. You can find out more about which cookies we are using or selectively switch them on in settings. Key Concepts of Physics Each time the original activity halves, another half-life has passed. What is half-life of a radioactive isotope? . A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place. In this GCSE Physics Revision Guide, you will find high quality Radioactive Decay & Half Life GCSE Revision Notes and Past Paper Questions. Isotopes with shorter half-lives will be more intense due to the fact that more decays will occur per second, which can be extremely dangerous when ingested. However, you do not always need to use your calculator you can often do the calculations in your head as they usually involve simple numbers. How many elements are there in the Periodic Table. Revision notes; AQA A-Level Chemistry; CIE A-Level Chemistry; Edexcel A-Level Chemistry; OCR A-Level Chemistry; Topics. (1) half life = days (ii) Another sample of the material has an initial count rate of 40 counts per minute. The time it takes for the number of radioactive nuclei to double. The Geiger-Muller tube is a device that detects radiation. It covers how the activity of a substance changes over time using half-life, how half-life can be used to work out how much of a substance will decay in a certain time and calculations involving half-life. A third two-day period from four days to six days, sees the activity halving again from 20 Bq down to 10 Bq. the material used in nuclear power plants (usually uranium), is non-renewable. This process continues and although the activity might get very small, it does not drop to zero completely. Last updated: 10/06/2020 Eduqas GCSE Science . help bring science learning to life. The profit from every pack is reinvested into making free content on MME, which benefits millions of learners across the country. [2 marks] A nucleus will regain stability by emitting alpha or beta particles and then 'cool down' by emitting gamma radiation. Edexcel GCSE Physics Topic Questions; Edexcel GCSE Combined Science Exam Papers; Edexcel Maths Exam Papers; . Isotopes with longer half-lives will contaminate areas for very long periods of time. It is not possible to say which particular nucleus will decay next but given that there are so many of them, it is possible to say that a certain number will decay in a certain time. It covers how the activity of a substance changes over time using half-life, how half-life can be used to work out how much of a substance will decay in a certain time and calculations involving half-life. The radioisotope technetium is used extensively in medicine. If you are also teaching Triple Science SP6 bundle will be more suited to you as it contains the extra content needed (13 lesson in total). Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful. Ready to take it to the next level? Question 1 half-life Estimate the half-life of the substance whose decay graph is shown opposite. Lessons include easy to follow presentations that promote high levels of pupil engagement. This bundle includes 8 full lessons with associated resources plus my lesson overview and resources list for the topic (ones highlighted in blue for combined science). Square Any errors or mistakes please let us know. Ashika graduated with a first-class Physics degree from Manchester University and, having worked as a software engineer, focused on Physics education, creating engaging content to help students across all levels. June 2016 Edexcel GCSE Physics Past Exam Papers (2PH01) June 2016 Physics/ Science Unit P1: Universal Physics (5PH1F/01) - Foundation. Sketch, on the same axes, the activity of this sample for the first 4 days. There are 13 more questions available in this topic. It takes another two days for the activity to halve again, this time from 40 Bq to 20 Bq. Conditions. Type Folder/File Size; pdf: Chapter 23 Exam Question: 156.7k: pdf: Chapter 23 Exam Question Mark Scheme: 251.2k: mp4: Chapter 23 Talking Paper: 9.4M: docx: Edexcel International GCSE Physics Chapter 23 Radiation and Half Life Learning Plan: 17.1k: pptx: Physics 4 2 Radioactivity: 1 . Mark Scheme. Equation The equation which you need to recall and apply is: Potential difference = current x resistance This can also be written as: V = I x R V = potential difference, volts (V) I = current, amps (A) Half Life and Uses. Group Code Registration Form; Biology Reading List; . For example the amount of a sample remaining after four half-lives could be expressed as: This could then be incorporated into other data. The half-life of radioactive carbon-14 is 5,730 years. Half-life is defined as: The time it takes for the number of nuclei of a sample of radioactive isotopes to decrease by half In other words, the time it takes for the activity of a sample to fall to half its original level Different isotopes have different half-lives and half-lives can vary from a fraction of a second to billions of years in length Net decline. Full lessons with resources for those teaching GCSE Edexcel Physics Topic 6 (for Triple Science and covers what you need for Combined Science Topic 6). GCSE AQA Physics Topic Questions Paper 1 Topic 1 - Energy . Read about our approach to external linking. Edexcel GCSE Physics Paper 2. These signals can be converted into clicking sounds, giving a. of a radioactive substance is measured in Becquerel (Bq). This website uses Google Analytics to collect anonymous information such as the number of visitors to the site, and the most popular pages. IGCSE Physics ; IGCSE Biology ; IGCSE Chemistry GCSE Physics Revision Cards are a quick and easy way to revise. Lessons include easy to follow presentations that promote high levels of pupil engagement. If your answer looks horrendous (eg. A particular radioactive sample contains 2 million un-decayed atoms. Its so important to know whqt you might expect in the exam paper, so I really do recommend that you get hold of some recent past exam papers. 15 years is three half-lives so the fraction remaining will be ()3 = 1/8 = 12.5 g. What is the half-life of a sample where the activity drops from 1,200 Bq down to 300 Bq in 10 days? Stores and Transfers. Please enable Strictly Necessary Cookies first so that we can save your preferences! The bundle includes 13 full lessons with associated resources plus my lesson overview and resources list for the topic. Go! Mark Scheme. Get this resource as part of a bundle and save up to 29% ppt, 3.15 MB Full Lesson PowerPoint and resources to teach the GCSE 9-1 specification Physics lesson on Half-Life. Each worksheet can be printed out for use in class or viewed on mobile devices - they also include a set of answers and a video with explanations and how to approach that style of question. and not all nuclei are likely to decay at the same time so it is impossible to tell when a particular nucleus will decay. Define net decline.undefinedThe number of decaying nuclei in a sample reduces with time due to radioactive decay. This means that every time you visit this website you will need to enable or disable cookies again. The FREE sample lesson GCSE Physics Energy Stores and Transfers FULL LESSON (Edexcel 9-1 CP3a SP3a) Conservation of Energy is also available to download from my TES shop. Prefer watching TikTok videos about this theory instead of reading it? You can download the FREE resource GCSE Physics EDEXCEL 9-1 SP6 & CP6 Radioactivity Lesson outline and equipment list for this topic from my TES shop. The illustration below shows how a radioactive sample is decaying over time: From the start of timing it takes two days for the activity to halve from 80 Bq down to 40 Bq. Empty reply does not make any sense for the end user. This is called the half-life. So if you're revising Newton's Law for Edexcel GCSE Physics, you can find all of the Newton's Law questions that have been ever asked by Edexcel in one single document - useful, no? A block of radioactive material will contain many trillions of nuclei and not all nuclei are likely to decay at the same time so it is impossible to tell when a particular nucleus will decay. Mark Schemes. mrburditt. EDEXCEL IGCSE / CERTIFICATE IN PHYSICS 7-2Radiation and Half-life February 1st 2013 All content applies for Triple & Double Science Edexcel IGCSE Physics pages 209 to 215. This website also uses Facebook Pixel, which is ananalytics tool that allows us to measure the effectiveness of our advertising by understanding the actions people take on our website. Something went wrong, please try again later. If you are also teaching Combined Science this is covered here. However, half-life gives the time taken for half the nuclei of a sample to decay and thus the activity of the sample to halve. Radiation. Just Start Typing. Hazards and Uses Questions. And when it comes to our assessments, they're shaped to encourage all students to best show what they know and can do. Step 1: Draw lines on the graph to determine the time it takes for technetium to drop to half of its original activity, Step 2: Read the half-life from the graph. Key Concepts of Physics Waves Astronomy Essential Physics Skills Static Electricity Motion and Forces To calculate the half-life of a sample, the procedure is: Determine the half-life of this original activity, Measure how the activity changes with time, The time taken for the activity to decrease to half its original value is the. One Becquerel is equal to one nuclear decay per second. 1.1.3 Core Practical: Investigating Motion, 1.2.8 Core Practical: Investigating Force & Extension, 2.1 Current, Potential Difference & Resistance, 2.2 Components in Series & Parallel Circuits, 2.4.2 Core Practical: Investigating Charging by Friction, 2.4.4 Uses & Dangers of Static Electricity, 3.2.3 Core Practical: Investigating Refraction, 3.2.5 Core Practical: Investigating Snell's law, 3.3.1 Core Practical: Investigating the Speed of Sound, 3.3.3 Core Practical: Using an Oscilloscope, 4.1.5 Core Practical: Investigating Thermal Energy, 5.1.2 Core Practical: Determining Density, 5.2.3 Core Practical: Investigating Changes of State, 5.2.5 Core Practical: Investigating Specific Heat Capacity, 6.1.4 Core Practical: Investigating Magnetic Fields, 7.1.4 Core Practical: Investigating Radiation, It is impossible to know when a particular unstable nucleus will decay, But the rate at which the activity of a sample decreases can be known, In other words, the time it takes for the activity of a sample to fall to half its original level, Different isotopes have different half-lives and half-lives can vary from a fraction of a second to billions of years in length. 3. So if the half-life is two days, four half-lives is 8 days. If there are 100 g of cobalt-60 in a sample, how much will be left after 15 years? Great lesson- very easy to follow with lots of great activities. Now an experienced GCSE and A Level Physics and Maths tutor, Ashika helps to grow and improve our Physics resources. Step 1: Calculate how many times the number of un-decayed atoms has halved, Step 2: Divide the time period by the number of half-lives. You also need to be able to model radioactive decay processes, be able to measure a half-life on a graph, and execute half-life calculations. Due to the random nature of radioactive decay, it can never be known which nucleus will decay next. Worksheets to support all areas of GCSE Physics! This is called the half-life. 164 terms. If a sample of a tree (for example) contains 64 grams (g) of radioactive carbon, after 5,730 years it will contain 32 g, after another 5,730 years that will have halved again to 16 g. It should also be possible to state how much of a sample remains or what the activity or count should become after a given length of time. Tes Global Ltd is The number of decaying nuclei in a sample reduces with time due to radioactive decay. June 2016 Physics/ Additional Science Unit . View Product 020 3633 5145 Half-life 2. Your rating is required to reflect your happiness. All the extra questions you need to take the separate Physics GCSE are in the Triple science Topics section. Thus, the two samples will have the same half-life. Scientists cannot tell when a particular nucleus will decay but they can use statistical methods to tell when half the unstable nuclei in a sample will have decayed. Thanks! The first block of questions covers double science. registered in England (Company No 02017289) with its registered office at 26 Red Lion Look at the front Read more , Copyright 2022 All Rights Reserved - iGCSE Science Courses. Thanks for the review, glad you liked it! GCSE Physics - Radioactive decay - Half-life. This website uses cookies so that we can provide you with the best user experience possible. Net decline can be expressed as (1/2) where x is the number of half-lives elapsed. This is called the, The Geiger-Muller tube is a device that detects radiation. The resource is appropriate for Triple and Combined Science classes, Foundation and Higher tiers. Section 7: Radioactivity and particles b) Radioactivity understand that ionising radiations can be detected using a photographic film or a Geiger-Muller detector explain the sources of background radiation understand that . One Becquerel is equal to one nuclear decay per second. We use cookies to give you the best experience on our website. These are perfect for students to work through in lessons or independently at home. pptx, 3.58 MB CP6g lesson from the new Edexcel combined science GCSE (9-1) all about half-life. With the wrong number of neutrons, nuclei can fall apart. Explain the differences between the half-lives of the two samples.undefinedHalf-life is not affected by any chemical or physical reactions, thus putting a radioactive sample in a fridge will not affect its half-life. Isotopes with longer half-lives will contaminate areas for very long periods of time. Edexcel GCSE Physics Paper 1. I have also started an Instagram flash card account that pupils can follow for physics revision as they scroll. This reduction can be expressed as net decline after a certain number of half-lives. Full coverage of topics needed for Edexcel and Cambridge (CIE). PHYSICS EDEXCEL PAPER 1. The exam will always ask using the term potential difference, but you gain credit for using either potential difference or voltage in your answers. A radioactive sample of radium is placed in the fridge.