Radiation (EST) and Rutherford

Slides:

Advertisements

Similar presentations

This Presentation is Brought to YOU by Quantum Theory, With Atomic and Nuclear Physics.

Advertisements

3-2 Discovering Atomic Structure

Electromagnetic waves are generated when an electric charge (q) begins to accelerate (that is, when its velocity begins to change). When an electric field.

THE HISTORY OF THE ATOM. Greek Philosophers (400 B.C.)  Aristotle- believed the everything was made of the 4 elements (air, fire, water, and land). Each.

Atomic Theory PS 9.26 PS 9.27 What is the nature of matter? The ancient Greeks pondered that question. Empedocles in 460 B.C.suggested that all matter.

Atomic Structure Timeline Read Around the Room. Democritus (400 B.C.) Proposed that matter was composed of tiny indivisible particles Not based on experimental.

Chapter 4: Discovery of Atomic Structure. Prentice Hall © 2003Chapter 2 The Discovery of Atomic Structure An ancient Greek named Democritus was the first.

Discovery of Radiation Roentgen (1895) Discovered a mysterious form of radiation was given off even without electron beam. This radiation could pass through.

Isaac Newton Light behaves like small particles - corpuscles Light travels in straight lines Reflect off opaque surfaces Penetrate transparent.

Discovery of Radioactivity

Rutherford’s Gold-Foil Experiment

Nuclear Chemistry – Radioactive Decay Tuesday, October 13 th, 2015 Textbook pages 799 – 802, 807 – 808.

HISTORY OF THE ATOM JJ Thomson Neils Bohr Earnest Rutherford Albert Einstein.

7.1 Atomic Theory and Radioactive Decay Natural background radiation exists all around us. Natural background radiation exists all around us. Radioactivity.

Discovery of Atomic Structure. Cathode Ray Mid 1800’s: scientists studying electrical discharge through tubes pumped almost empty of air. High voltage.

Radioactivity P1b Observing Alpha, Beta and Gamma radiation.

Atomic Theorists The ‘Who’s Who’ of the atomic world.

Radioactivity and the nucleus

Nuclear Chemistry – Radioactive Decay

History of Atomic Theory

Atomic Theory and Radioactive Decay

THE HISTORY OF THE ATOM.

What is matter... ? Aristotle ( BCE): I will say

Discovery of Radiation

Models of the Atom SCH3U.

Discovery of Radiation

Topic: Atomic Structure Aim: How has the atomic model changed over time? Do Now: How would you define “atom”? HW:

Nuclear Chemistry – Radioactive Decay

Atoms: Classification & Representation

Nature of Atoms Study of the Atom began with study of Radiation

Atomic Structure Timeline

7.1 Atomic Theory and Radioactive Decay

Nuclear Chemistry.

Page Review questions: Page 16, #1,2,3,4,7

Atomic Structure Timeline

THE ATOMIC NUCLEUS How is the atom put together?

Radioactivity Crash Course Radioactive

NUCLEAR CHEMISTRY.

More Atomic History!.

Unit 2 - Lecture 1: Structure of the Atom

Atomic Structure Timeline

Rutherford’s Atomic Model

History of the Atom.

Intro to Nuclear Chemistry

Intro to Nuclear Chemistry

Ionising Radiation.

The Atom & Subatomic Particles

Ionising Radiation.

Atomic Structure Timeline

7.1 Atomic Theory and Radioactive Decay

Knowledge Organiser – Atomic Structure

Chapter 4 Atoms 1. Atomic Structure Timeline

Models of the atom The Rutherford Model investigated the scattering of alpha particles by thin gold foil. Alpha particles are positively charged helium.

Atomic Structure Timeline

Lesson 1 Discovering Parts of an Atom

Nuclear Chemistry – Radioactive Decay

Unit 2 - Lecture 1: Structure of the Atom

Atoms: Nuclear Interactions

From unstable to stable

HISTORY OF THE ATOM JJ Thomson Neils Bohr Earnest Albert Rutherford

Atomic Theory The idea that matter is made up of atoms, the smallest pieces of matter.

Unstable Nuclei & Radioactive Decay

Atomic Structure Timeline

SPARK In your notebook write down the following:

Pioneers of Nuclear Research

Radioactivity Chapter 18.

Intro to Nuclear Chemistry

Atomic Structure Timeline

Unit 4 – Nuclear Reactions

Presentation transcript:

Radiation (EST) and Rutherford

Remember the visible spectrum?

The electromagnetic spectrum

The electromagnetic spectrum Heinrich Hertz James Clerk Maxwell

The electromagnetic spectrum Wilhelm Röntgen

Electromagnetic trend The shorter the wavelength, the more energy the wave has.

What Is radiation? This is when an atom gives off high energy particles (matter) or waves. Henri Becquerel, Marie Sklodowska Curie and Pierre Curie were among the first scientists to experiment with radiation.

Ernest Rutherford

3 types of radiation

Blocking radiation

Complete page 28 of your workbook.

I bombarded gold foil with alpha (+) particles. Ernest Rutherford Radioactive substances can give off alpha (+), beta (-) and gamma (neutral) radiation. I bombarded gold foil with alpha (+) particles. ! Ernest Rutherford, 1911

Gold Foil Experiment

Atoms are mostly empty space. 2 conclusions Atoms are mostly empty space. An atom contains a very dense and small nucleus. The nucleus is positively charged.

If this soccer ball were the nucleus of an atom, how far away would the nearest electron be?

Atoms are mostly empty space. What can we conclude from this? Atoms are mostly empty space.