Where do alpha and beta particles come from?

Slides:

Advertisements

Similar presentations

Unstable Nuclei and Radioactive Decay

Advertisements

Unstable Nuclei and Radioactive Decay Objectives: 9.0 Distinguish between chemical and nuclear reactions. 9.3 Identifying types of radiation and their.

Decay mechanisms Exam question Radio isotopes. previous next smart.

Unstable nuclei Some nuclei are unstable, for example Uranium 235 (it’s to do with the relative numbers of protons and neutrons) Hi! I’m uranium-235 and.

Nuclear Chemistry Nuclear Reactions. Reactions Chemical Reactions- atoms want stable electron configuration Nuclear Reaction- unstable isotopes (radioisotope)

Radioactive Material Review. What determines the atoms identity?

What is radioactivity? lecture 9.1 Gamma ray bursts from a star collapsing into a Black Hole.

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

Some nuclei – usually large ones – are unstable They cannot fit their neutrons and protons into a space small enough that that strong nuclear force can.

Types of Radiation 10/1/15. Brain Teaser Soft and fragile is my skin I get my growth in mud I’m dangerous on something pretty If you’re not careful, I.

Monday, May 4 th m.socrative.com 9bff6d58 Intro to Nuclear Chemistry.

HOW ATOMS DIFFER  If all atoms are made up of protons, electrons, and neutrons, what makes them different? They differ in the number of these particles.

Lesson aims By the end of this lesson you should –Know where radiation comes from –Be able to name the three types of radiation –Be able to state how each.

NUCLEAR CHANGE.

Types of Radiation.

5.2 Nuclear Reactions In the nuclear equation for alpha decay, the mass number of the new nucleus decreases by 4 and its atomic number decreases.

Section 5: Radioactive Elements

By the end of this presentation you should be able to……

Electromagnetic Spectrum

6th Grade Life Science Miss Sauer

Hank Miller & Haley Vollmer

Alpha, Beta, and Gamma Decay

Unstable Nuclei and Radioactive Decay

The Atom The atom consists of two parts:

The Atom The atom consists of two parts:

V. Radioactivity.

These particles make up

Warm-Up 10/28/13 Imagine winning a $1000 prize, but the conditions of the award require you to spend ½ of the amount that remains each month. How long.

Alpha, Beta, and Gamma Decay

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.

Unstable Nuclei and Radioactive Decay

Alpha, Beta, and Gamma Decay

Warm-Up 10/23/13 Hold Tight! We are changing the seating chart slightly. REMINDER: All warm-ups need to be in your folder by Friday in order to be graded.

Beta and Positron Radiation

NUCLEAR CHEMISTRY: RADIATION AND NUCLEAR STABILITY

Section 4: Unstable Nuclei and Radioactive Decay

Radioactivity results from having an unstable nucleus.

Nuclear Chemistry Notes#6

Nuclear Chemistry.

Nuclear Reactions.

Summary of alpha etc.

Alpha, Beta, and Gamma Decay

Alpha, Beta, and Gamma Decay

Radioactivity Radioactive decay.

Knowledge Organiser – Atomic Structure

Warm-Up An element that under goes beta decay will decay to another element with (a lower or a higher) atomic number Which radiation has a negative charge.

Radioactive Decay Radioactivity results from having an unstable nucleus. When these nuclei lose energy and break apart, decay occurs. Radioactive decay.

Nuclear Chemistry: Radioactivity & Types of Radiation

Radioactive Decay.

Chapter 4 – The Structure of the Atom

The mass numbers on the left and right of the equations must be equal.

Lesson objectives; You will learn:

Alchemy Investigation IV-Lesson 2

Unit 4 Nuclear Chemistry.

Section 5 - pg 158 Radioactive Elements

Radioactive Decay.

Unit 4 – Nuclear Reactions

Alpha, Beta, and Gamma Decay

Alpha and Beta Nuclear Reactions

Three kinds of particle emission

Radioactivity Chapter 18.

Top trumps – Play top trumps with the different types of radiation.

Unit 4 – Nuclear Reactions

Aim # 45: What is Radioactivity?

Sec. 3.2 – Radioactive Decay

The nucleus of an atom contains two particles:

Presentation transcript:

Where do alpha and beta particles come from? Radioactive Decay Where do alpha and beta particles come from?

Aims To understand how alpha and beta decay affect the nuclei of radioactive atoms

Alpha radiation Made of : 2 protons and 2 neutrons Positive charge Stopped by paper

Stopped by a thin sheet of aluminium Beta radiation Made of : A fast moving electron Negative charge Stopped by a thin sheet of aluminium

Alpha decay Am BUT don’t try to count them!! I have 95 protons and 148 neutrons I’m the nucleus of an Americium atom BUT don’t try to count them!! Am 95 243

Alpha decay I could decay at any time, do you know how nervous this makes me

What’s going on? Am Np Neptunium!!! Help I can’t be Americium if I’ve lost 2 protons What am I now? Hang on… something’s different I’m missing 2 protons and 2 neutrons Phew that feels better! I'm an alpha particle I have 2 protons and 2 neutrons Neptunium!!! They are over here Am 95 243 Np 93 239

Beta Decay This Carbon 14 nucleus is unstable –it has too many neutrons

Beta Decay One of the neutrons has changed into a proton and an electron. Something strange is about to happen………

Beta Decay The nucleus now has 7 protons and 7 neutrons. It has changed from a carbon nucleus into a nitrogen nucleus

Quiz Time