TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz.

Slides:

Advertisements

Similar presentations

Nuclear Chemistry Mr. Skirbst Physical Science Topic 21.

Advertisements

-Different FORMS of an Element that occur Naturally -Have the SAME # of P and E but DIFFERENT # of N -Isotopes of an element have the SAME CHEMICAL PROPERTIES.

- Composition Notebook Isotopes are atoms of the same element that have a different number of neutrons in their nuclei.

Nuclear Chemistry Targets: 1.I CAN Utilize appropriate scientific vocabulary to explain scientific concepts. 2.I CAN Distinguish between fission and fusion.

The Atomic Nucleus and Radioactivity The nucleus is composed of particles called nucleons, which are protons and neutrons. The number of nucleons is called.

Mini Quiz- Half Sheet H = 1.01 g/mol, O = g/mol S = g/mol, N = g/mol, I = g/mol 1.How many grams in 3.4 x molecules of H.

NOTES: 25.2 – Nuclear Stability and Radioactive Decay

Introduction to Nuclear Chemistry. © 2009, Prentice-Hall, Inc. The Nucleus Remember that the nucleus is comprised of the two nucleons, protons and neutrons.

Aim: What is the half-life of a radioisotope Do Now:

Atomic Symbols and Isotopes

Title:Alpha, Beta, Gamma Radiation Prior learning –Most atoms are stable –Some naturally occurring atoms are unstable and emit radiation –This causes atom.

Half Lifes. Atoms Proton Electron Cloud Neutron Atomic Number Number of protons – change this → change the element Hydrogen has one proton and one electron.

Learning Targets I can name the force that holds the atom’s nucleus together I can describe the two reasons why some isotopes are radioactive. I can describe.

Radioactive Decay Radioactive Decay. Radioactive Decay: Some unstable atoms try to regain stability by losing energy. They lose energy by emitting radiation.

1. Nucleons. Protons and neutrons 2. Nuclide

Nuclear Chemistry Nuclear Chemistry The study of nuclear reactions and their use in chemistry.

Modern Physics Radioactive Decay. Look at the periodic table given to you. Find element with the atomic number 6 What is it?

Radioactivity Nuclear Chemistry

Radiation: Particles and Energy.

1 Introduction to Radiation and Radioactivity Is your notebook radioactive? –Of course. Many of the elements found in everyday items include radioactive.

Radioactivity Nuclear Chemistry. Discovery of Radioactivity Wilhelm Roentgen discovered x-rays in Henri Becquerel discovered that uranium salts.

Nuclear Decay Notes Stability Curve Atomic number Z Neutron number N Stable nuclei Z = N Nuclear particles are held.

Warm Up Where are the biggest atoms on the periodic table? 2.Arrange the following elements in increasing electronegativity: Cl, As, Sn 3.Which.

Isotopic Abundance Reminder: bring a calculator to class.

Radioactivity and Nuclear Energy Chapter 19 neFFc&feature=related.

Atoms and Isotopes the light bulb is a reminder

By Andrew. What are Isotopes? Isotopes are types of atoms with a different amount of neutrons in the nucleus than other atoms of the same element. Although.

Chapter 4.4 and 25.  Lawrence’s cyclotron: Articles/Archive/early-years.html Articles/Archive/early-years.html.

 Atomic Number  Protons + Neutrons = Atomic Mass.

PHYSICAL BACKGROUND ATOMIC STRUCTURE, NUCLEONS AND ACTIVITY

Nuclear Chemistry Objective: To explain the process of radioactive decay using nuclear equations and half life Essential Question: How do unstable (radioactive)

1 Chapter 9 Nuclear Radiation 9.1 Natural Radioactivity Copyright © 2009 by Pearson Education, Inc.

Nuclear Chemistry The Atom The atom consists of two parts: 1. The nucleus which contains: 2. Orbiting electrons. protons neutrons Multiple nuclei is.

A Fossil.  Any method of measuring the age of an event or object in years.

Nuclear Chemistry Chapter 25. What do you think of when you hear Nuclear Chemistry?

11/27/2015 PhSci Ch 4 17 Questions 1 4B = Section 2 The Structure of Atoms p (Question will be on 4B quiz, too.) Physical Science Curriculum.

ABSOLUTE AGE: Measurements of natural radioactivity in rocks have allowed scientists to understand the numerical age of an object in years.

Unstable Nuclei & Radioactive Decay Radioactivity Nucleus of an element spontaneously emits subatomic particles & electromagnetic waves. Nucleus of an.

Chapter TED:Radioactivity-Expect the Unexpected by Steve Weatherall hDvDlD3b85zmvERO_rSSUj3FVWScEA _X.

Radioactive Decay.

Nuclear Chemistry. The Atom The atom consists of two parts: 1. The nucleus which contains: 2. Orbiting electrons. protons neutrons.

Nuclear Transformations Objectives: 1. What determines the type of decay a radioisotope undergoes? 2. How much of a sample of a radioisotope remains after.

Nuclear Radiation Half-Life. What is Radiation? Penetrating rays and particles emitted by a radioactive source Result of a nuclear reaction! –Involves.

Nuclear Changes Thermodynamics.  Three Types:  1. Radioactive Decay- Atoms emit high energy particles and waves as they change into new less reactive.

TOPIC: RadioactivityTOPIC: Radioactivity & Natural Transmuations Do Now: Where on your reference table can you find radioactive particles?

Types of Radioactive Decay Kinetics of Decay Nuclear Transmutations

Nuclear Chemistry. The Atom The atom consists of two parts: 1. The nucleus which contains: 2. Orbiting electrons. protons neutrons.

Thursday, October 15 th, 2015 The ABG's (or Alpha, Beta, Gamma) of Radioactivity.

Chapter 21 Section 2 Radioactive Decay Radioactive Decay.

NUCLEAR CHANGES What is Radioactivity?. What happens when an element undergoes radioactive decay? During radioactive decay an unstable nuclei of an isotope.

Chapter 14 Section 14.1.

Nuclear Stability and Decay More than 1500 different isotopes are known. Of those, only 264 are stable and do not decay over time. One factor that affects.

Nuclear Chemistry. I. Terms A. Nuclear reactions involve changes in the nucleus. 1) This is unusual – most chemical reactions only rearrange atoms. B.

Section 2: Radioactive Decay

Radioactivity and Nuclear Reactions PS-2.2: illustrate the fact that the elements exist as stable or unstable isotopes PS-2.6: compare fission and fusion.

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-

Nuclear Chemistry. Review: Parts of the Atom Electron (-) Proton (+) Neutron.

NUCLEAR CHEMISTRY Chapter 20. Nuclear Chemistry Radioactivity is the emission of subatomic particles or high- energy electromagnetic radiation by the.

Nuclear Chemistry. Learning Targets I can describe the forces that hold the atom together I can explain why some isotopes are radioactive. I can describe.

Drill – 10/19 How many grams of Cesium are 8.5x10 29 atoms?

Nuclear Chemistry Aim Nuke 2 – What is Radioactivity? Watch the video below for extra understanding!

Natural Radioactivity – Unstable Nuclei Emit Radiation

Not all isotopes are stable

Alpha and Beta Decay -Both naturally occurring and human-made isotopes can be either stable or unstable -Less stable isotopes of one element will undergo.

Nuclear Chemistry.

Nuclear Chemistry Chapter 21.

Radioactivity Chapter 18.

Nuclear Reactions.

Nuclear Transformations

Presentation transcript:

TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz

Not all isotopes are stable Stable isotopes have… 1:1 ratio of n 0 to p + (for elements <20) 1.5:1 ratio of n 0 to p + (for elements >20) To determine if an isotope is stable or unstable (radioactive) – compare the number of protons to neutrons

Beyond Element 83 are very unstable (radioactive) No amount neutrons can hold nucleus together once it has 83 + protons All Elements 83 and above on PT are radioactive Other elements may have radioactive isotopes applet

Radioisotopes- unstable nucleus – they are radioactive the nucleus of element emits radioactive particles and/or electromagnetic waves… by emitting these particles, nucleus changes into different element (it’s trying to become more stable)

Radioactive Decay Series Sometimes 1 change isn’t enough to achieve stability Some radioisotopes go through several changes before they achieve stability (and are no longer radioactive)

U-238  PB-206