Elementary particles (according to the Standard model) Definition: particles that are, theoretically, not made out of any smaller components. An unstable nucleus will decompose spontaneously, or decay, into a more stable configuration but will do so only in a few specific ways by emitting certain particles or certain forms of electromagnetic energy. Radioactivity Samiul Ehsan Computer Science & Engineering 2. If you continue browsing the site, you agree to the use of cookies on this website. Info. Half-Life • She applied the term radioactivity in 1899 • Ernest Rutherford (1871 – 1937) identified 2 major types of radiation, alpha and beta radiation through an experimentation Alpha and Beta Particles • Alpha particle • Positively-charged • Consists of 2 protons and 2 neutrons (nucleus of He atom) • Beta particle is a high-speed electron emitted from nucleus. Radioactive isotopes. • It was first observed by Henri Becquerel. You can change your ad preferences anytime. Something must make the nucleus unstable for radioactivity to occur. Radioactivity Presentation - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. If you click on them, you can see larger versions. Rn222. Below are the previews for the slide in Physics 7 - Radioactivity and Particles. No public clipboards found for this slide. 1. Collisions with nitrogen particles produce carbon-14 through n . GCSE Physics Radioactivity learning resources for adults, children, parents and teachers. Alpha and Beta radiation. Detection of Radioactivity Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Created: Jun 11, 2009. If you click on them, you can see larger versions. Physics 7 - Radioactivity and Particles; Slide Preview. Radioactivity - Radioactivity Radioactivity When an atom of an element has an unstable nucleus, the nucleus can disintegrate, forming subatomic particles and releasing large amounts ... | PowerPoint PPT presentation | free to view How can I re-use this? Radioactivity 1. Chapter 10 Radioactivity Specific Objectives By the end of this topic, the learner should be able to: a) Define Radioactivity • These heavy elements are called radioactive elements. Transport of radioactive materials by road. Ppt. Radioactivity decay law. View Chapter 10 - Radioactivity.pptx from PHYSICS PHRE 321 at Kisii University. About this resource. Click here to register and to download this PowerPoint file. Categories & Ages. Marie and Pierre Curie also studied it. Animations and cloze activities included. R226. GCSE Radioactivity ppt. Helium nucleus. The time scale for the decay processes can range from microseconds to billions of years. Detection of Radiation The Geiger counter is a gas-filled tube with a wire in the center. The stable nuclides are shown as dots on the Segrè diagram. Four primary types of ionizing radiation: alpha particles. 88 protons. Radioactive decay. Some worksheets have been found on TES. • Radioactivity is caused by unstable nuclei trying to become stable by emitting particles and/or energy . But for Mr. or Mrs. Alpha particles are a highly ionising form of particle radiation. T Sort by: Radioactivity ... Nuclear Decay (Radioactivity) Subatomic particles Electron -negatively charged particle found outside the nucleus. See our Privacy Policy and User Agreement for details. Background radiation: radioactivity activity of all other sources, e.g. Show: Recommended. Many different devices, of varying levels of sophistication, have been developed to do this. They lose their energy slowly in material, being able to travel Physics By this presentation you can get an idea about the radioactivity ; and examples will help u to understand the topic. Section 7: Radioactivity and particles b) Radioactivity - PowerPoint PPT Presentation Transcript: EDEXCEL IGCSE / CERTIFICATE IN PHYSICS 7-1Atoms and RadioactivityEdexcel IGCSE Physics pages 199 to 208July 21st 2012All content applies for Triple & Double Science. Proton positively charged subatomic particle ... | PowerPoint PPT presentation | free to download . Nuclear Radiation and its detectors 1 Subatomic Particles • Protons- plus charge In Uses of Radioactive Isotopes Including Safety Precautions Detection of Radioactivity Characteristics of the Three Types of Emission Nuclear Reactions Half-Life Uses of Radioactive Isotopes Including Safety Precautions. Radioactivity is the emission of particles and EM radiation from an unstable nuclide. Much of the threat from radiation is involved with the ease or difficulty of protecting oneself from the particles. • Radioactivity • Alpha Decay • ... A given Nucleus has the following particles ­ Total number of ‘nucleons’: atomic mass number, A Proton number: atomic number, Z Neutron number: N = A ­ Z. See our User Agreement and Privacy Policy. Nuclear Reactions Report a problem. Radon. Nuclear Physics and Radioactivity - Nuclear Physics and Radioactivity Vocabulary alpha particle - positively charged particle consisting of two protons and two neutrons. (Helium nucleus) atomic mass ... | PowerPoint PPT presentation | free to view For the engineer, the atom nucleus offers an inexhaustible source of energy. Updated: Nov 16, 2014. ppt, 1 MB. Presentation Mrs an Mr Anybody discover radioactivity. Radioactivity Radioactivity also known as radioactive decay is a process in which unstable atomic nucleus loses energy by emitting radiation. Nuclear Radiation. The rate of radioactive decay is described in half-lives. You can also click the arrows to the left and right of the screen. This is for preview purposes only. They consist of two protons and two neutrons bound together into a particle identical to a helium nucleus; hence, it can be written as He2+. Physics; Physics / Matter; Physics / Waves; 14-16; View more. 86 protons. Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. The greater the likelihood that damage will occur by an interaction is the ionizing power of the radiation. 138 neutrons. Please note: The PowerPoints do NOT have any watermarks on them. energized particles. hthomas1 Radioactivity powerpoint for GCSE science . Radioactivity powerpoint for gcse science by hthomas1 teaching. Radiation And Radioactivity PPT Presentation Summary : Gamma rays interact with material by colliding with the electrons in the shells of atoms. Radioactivity PowerPoint PPT Presentations. If you are on a computer you can press the left and right arrows to move. Module 7. The. Radiation is released in form of particles or electromagnetic waves. Radioactive waste handling, storage and disposal. 136 neutrons + n. n. p. p. a (4He) 2 protons. Radioactivity. For the researcher, and the doctor as well, radioactivity provides remarkable diagnostic tools. • In stable atoms of relatively low atomic mass there are approximately equal numbers of protons and neutrons i.e. GCSE Radioactivity ppt. Characteristics of theThreeTypes of Emission 3 Nuclear Stability . Title: Natural Radioactivity 1 Natural Radioactivity. Radioactivity • The nuclei of naturally occurring heavy elements like U, Th, Ra and Po are unstable and keep on emitting spontaneously invisible rays or radiations (α, β, γ -rays) and give more stable elements. Gamma radiation is. You can also click the arrows to the left and right of the screen. 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