Presentation is loading. Please wait.

Presentation is loading. Please wait.

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

Published byFrancis Sanders Modified over 9 years ago

Similar presentations

Presentation on theme: "TOPIC: Radioactivity TOPIC: Radioactivity Do Now: Take out your notes from Monday, and get ready for an open notebook quiz."— Presentation transcript:

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

2 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

3 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

4 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)

5 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)

6 U-238  PB-206

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

Similar presentations

Nuclear Chemistry Mr. Skirbst Physical Science Topic 21.

Nuclear Chemistry Mr. Skirbst Physical Science Topic 21.
-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.

-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.

- 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.

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.

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 = 16.00 g/mol S = 32.07 g/mol, N = 14.01 g/mol, I = 126.90 g/mol 1.How many grams in 3.4 x 10 23 molecules of H.

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

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.

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:

Aim: What is the half-life of a radioisotope Do Now:
Atomic Symbols and Isotopes

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.

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.

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.

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.

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

1. Nucleons. Protons and neutrons 2. Nuclide
Nuclear Chemistry Nuclear Chemistry The study of nuclear reactions and their use in chemistry.

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?

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

Radioactivity Nuclear Chemistry
Radiation: Particles and Energy.

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.

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

Similar presentations

Ads by Google