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Outcomes What is the difference between alpha, beta and gamma radiation? What are the rules for writing equations of nuclear reactions? How can we make radioisotopes?
Alpha Decay 2 protons 2 neutrons No electrons Equivalent to a Helium nucleus
Alpha Decay - example Uranium-238 will decay into Thorium-234 by emitting an alpha particle Atomic number (charge) is conserved Atomic mass (nucleons) is conserved
Beta Decay An electron originating from nucleus (WTF!) A neutron turns into a proton, electron and an antineutrino
Beta Decay - example Carbon-14 has too many neutrons to be stable. Atomic number (charge) is conserved Atomic mass (nucleons) is conserved
Gamma Decay Gamma rays are a form of electromagnetic radiation, very high frequency. No charge and no mass
Gamma Decay - example Iodine-131 decays by beta AND gamma emission Atomic number (charge) is conserved Atomic mass (nucleons) is conserved
Producing Radioisotopes By process called “artificial transmutation” Example: Neutron absorption
Atomic Symbols and Isotopes
Radioactive Decay. - Alpha Decay The emission of an particle from the nucleus of an atom is called alpha decay An alpha particle is just a helium nucleus.
Nuclear Chemistry Types of Radioactive Decay Kinetics of Decay Nuclear Transmutations.
Alpha, Beta, and Gamma Decay
Radioactive Decay Radioactive Decay. Radioactive Decay: Some unstable atoms try to regain stability by losing energy. They lose energy by emitting radiation.
7.1 Nuclear Reactions What are atoms made of? Which particles are found in the nucleus? What are the three types of ionising radiation? What are the three.
Unstable Nuclei and Radioactive Decay Objectives: 9.0 Distinguish between chemical and nuclear reactions. 9.3 Identifying types of radiation and their.
Gamma Decay. Radioactive Decay Alpha Decay Radioactive Decay Alpha Decay Beta Decay.
Radioactivity Chapter 6.1. Radioactivity Comes from an unstable nucleus Can be either… Particles or Energy (as electromagnetic radiation) or Both.
TOPIC: RadioactivityTOPIC: Radioactivity & Natural Transmuations Do Now: Where on your reference table can you find radioactive particles?
Nuclear Chemistry Chapter 21. Nuclear Chemistry Study of nuclear reactions and their uses in chemistry nuclear reactions – change in matter originating.
Pig – P4 Higher. Describe one way gamma rays are different to x-rays and one way in which they are similar?
What is it to be Radioactive? Radioactive decay is the process in which an unstable atomic nucleus loses energy by emitting radiation in the form of particles.
Radioactivity Polonium and radium X-Rays
Nuclear Physics An Introduction. What does it mean when something is “Radioactive”? Atomic nuclei that emit particles and energy are said to be radioactive.
Harvesting Nuclear Energy. The Atom Nucleons Number of protons + number of Neutrons Basically the whole mass of the entire nucleus.
Unstable Nuclei and Radioactive Decay. Radioactivity (Radioactive decay) The process by which some substances spontaneously emit radiation. Radioactive.
Radioactivity Some substances spontaneously emit radiation – radioactivity The rays and particles emitted are called “radiation”. Radioactive elements.
Do now: Write nuclear equations for these nuclear reactions 1) Uranium-238 decays into Thorium-234 2) Iodine-131 decays into Xenon-131: 3) Rutherford fired.
Nuclear Stability and Decay 1500 different nuclei are known. Only 264 are stable and do not decay. The stability of a nucleus depends on its neutron-to-
Types of Nuclear Decay. Alpha Decay (α) Emission of an alpha (α) particle which is a Helium nuclide. During an alpha decay, a nucleus is able to reach.
Isotopic Abundance Reminder: bring a calculator to class.
Drill – 10/21 Clear desk of everything and take outline, ½ sheet of paper, and pen or pencil out.
Electromagnetic Spectrum of Radiation Beta Emission –Problem: –Problem: carbon-14 is a beta emitter. When it undergoes beta emission, into what.
NUCLEAR CHEMISTRY QUIZ.
Nuclear Chemistry The Atom The atom consists of two parts: 1. The nucleus which contains: 2. Orbiting electrons. protons neutrons Multiple nuclei is.
Nuclear Chemistry. The Atom The atom consists of two parts: 1. The nucleus which contains: 2. Orbiting electrons. protons neutrons.
Nuclear Chemistry Chapter 25. What do you think of when you hear Nuclear Chemistry?
Nuclear Chemistry. RadioactivityRadioactivity The spontaneous decomposition of a nucleus to form a different nucleus accompanied by a release of energy.
Nuclear Decay (Radioactivity) Subatomic particles Electron -negatively charged particle found outside the nucleus. Proton – positively charged subatomic.
1.Will not take any after next Tuesday 1/13 1.Define each of these terms: You may use your notes and they do not need to be in complete sentences Energy.
Nuclear Chemistry Chemistry Ms.Piela.
Alpha Decay. Radioactive Decay Alpha Decay Radioactive Decay Alpha Decay Beta Decay.
Radioactivity and Nuclear Energy Chapter 19 neFFc&feature=related.
Chapter 5 Notes. The atomic mass of an element is a weighted average mass of the atoms found in nature. If you were to mass an oxygen atom, would.
Radioactive Decay Alpha, Beta, and Gamma Decay. Radioactivity Emission of particles and energy from the nucleus of certain atoms This happens through.
TED Ed – 4 min U → Th He + ɣ Write a nuclear reaction for… Uranium-238 decays into Thorium-234: 92 = (conservation of atomic.
Nuclear Radiation Half-Life. What is Radiation? Penetrating rays and particles emitted by a radioactive source Result of a nuclear reaction! –Involves.
Radioactivity Nuclear Chemistry. Discovery of Radioactivity Wilhelm Roentgen discovered x-rays in Henri Becquerel discovered that uranium salts.
HomeworkHomework Read section 4.4 Answer questions 26 & 27 on page 107.
Nuclear Chemistry. Review: Parts of the Atom Electron (-) Proton (+) Neutron.
Atomic Number & Mass Number Atomic number = the number of protons Mass number = the number of nucleons (protons & neutrons) A neutral atom has the same.
Nuclear Chemistry Nuclear Reactions. Reactions Chemical Reactions- atoms want stable electron configuration Nuclear Reaction- unstable isotopes (radioisotope)
LOJ Feb 2004 Radioactivity 1 What is radioactive decay?
Nuclear Chemistry Types of Radiation Decay Equations.
Nuclear Chemistry. I. Terms A. Nuclear reactions involve changes in the nucleus. 1) This is unusual – most chemical reactions only rearrange atoms. B.
Nuclear Decay. Radioactivity The emission of high-energy radiation or particles from the nucleus of a radioactive atom.
Nuclear Decay Notes Stability Curve Atomic number Z Neutron number N Stable nuclei Z = N Nuclear particles are held.
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