isotopes & radioisotopes section 3.6. what is an isotope? two or more forms of an element. each...

8

Isotopes & Radioisotopes Section 3.6

Upload: jessica-dickerson

Post on 04-Jan-2016

214 views

Category:

Documents

2 download

Report

Download

Embed Size (px):

TRANSCRIPT

Page 1: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

Isotopes & Radioisotopes

Section 3.6

Page 2: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

What is an isotope? Two or more forms of an element. Each form has the same number of protons

but a different number of neutrons. Therefore, each form has a different atomic

mass. For example: 35Cl

17

37Cl17

P = 17; N = 18 P = 17; N = 20

Cl-35 Cl-37

Page 3: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

Isotopes of the Same Element Have the same physical and chemical

properties. However, some isotopes are unstable, or radioactive.

These isotopes are called radioisotopes.

Page 4: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

Radioisotopes The instability causes the nucleus to break

apart and eject very-high-energy particles into its surroundings.

This energy can be both beneficial and harmful.

Page 5: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

The types of high-energy particles: Alpha particles (α): positive particles Beta particles (β): high-energy electrons Gamma particles (γ): the most dangerous

Page 6: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

Harmful Effects of Radioisotopes Can damage living tissue and DNA Cancer Birth defects

Page 7: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

Beneficial Effects of Radioisotopes Uranium-235: Nuclear power Carbon-14: Fossil dating Americium-241: Smoke detectors Cobalt-60: Cancer treatment (radiation)

Page 8: Isotopes & Radioisotopes Section 3.6. What is an isotope? Two or more forms of an element. Each form has the same number of protons but a different number

Homework Study!!! (Parts of the atom; B-R diagrams) Read p.97 “Applications of Radioisotopes”

(Figures included) Answer p.97 (1-4)

Click for solutions √ number of protons number of neutrons 6 6 8

4.2. ATOMIC NUMBER Elements are different because they contain different numbers of protons. Atomic number = # protons = # electrons in a neutral atom

Atoms. Atomic Number Identifies the element Identifies the element Atomic # = #protons= # electrons Atomic # = #protons= # electrons Is the number of

REVIEW. Bohr Model Drawings Identify the number of Protons, Neutrons, and Electrons in an element. (PEN) Write the number of Protons and Neutrons in the

2 nucleus 1 3 4. A TOMIC STRUCTURE 4 Atomic mass 2 Atomic number number of electrons number of protons The sum of protons and neutrons in an atom Number

Atomic number = # of protons = # of electrons (neutral atom)

The Chemistry of Matter Abel’s Elements To Know. Quick Facts Atomic Number = number of protons Atomic Number = number of protons 298 K = room temperature

Atoms / Elements Different number of protons Protons found in nucleus # of protons = atomic number Since atom is electrically neutral: #protons = # electrons

Atomic Structure Test Review 166 point total. 1.The atomic number is the number of protons. 2. The mass number is the number of protons and neutrons

What is The Atomic Number ? The number of Protons in an ATOM

Atomic Number Atoms of different elements have different numbers of protons. Atoms of the same element all have the same number of protons. The atomic

Chapter 2 cont’ Atoms and Elements Recall: Atomic Number Number of protons Z Mass Number Protons + Neutrons Whole number A Abundance = relative amount

Introduction to Nuclear Physics and Nuclear Decay · 2008. 5. 28. · 22 May 2008 4 Elements Named for their number of protons Z (atomic number) = number of protons in nucleus N =

NUCLEAR CHEMISTRY THE ULTIMATE IN SPONTANEITY. Review Atomic number (Z) – number of protons Mass number (A) – sum of the protons and the neutrons Nuclides–

Nuclear Chemistry. The Nucleus Remember that the nucleus is comprised of the two nucleons, protons and neutrons. The number of protons is the atomic number

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 2F-1 (of 15) NUCLEONS – The particles found in the nucleus Protons (+) Neutrons (0) ATOMIC NUMBER (Z) – The number of protons in the

Nuclear Chemistry. The Nucleus Remember that the nucleus is comprised of protons and neutrons. The number of protons is the atomic number. The number

Modern Physics By Neil Bronks Atoms C 12 6 Mass Number Mass Number - Number of protons + Neutrons. Atomic Number Atomic Number - Number of protons In

Physical Science Mr. Bythwood Protons (+): Atomic Number Neutrons: Atomic Mass minus Protons Electrons (-): Same number as Protons

Number of Protons = Number of Electrons Number of Protons = Atomic Number Atomic Mass = Protons + Neutrons

· Web viewAlkali metal with37 protons _____Rubidium_____ Complete the following table. The first row is completed as an example. Name of Element Atomic Number Number of Protons Number

Atomic Structure 1. Atomic and Mass Number The number of protons in an atom = atomic number (symbol “Z”) The mass = protons + neutrons (symbol “A”) Mass

The nucleus consists of protons and neutrons, collectively called nucleons. The number of protons is the atomic number. Protons plus neutrons is the atomic

Isotopes:Isotopes: atoms with the same number of protons but a different number of neutrons. –carbon-12 has 6 protons and 6 neutrons; –carbon-13

U SES OF RADIOISOTOPES. R ADIOISOTOPES TO STUDY Carbon – 14 Cobalt – 60 Iodine – 131 Iodine - 125 Determine the numbers of protons, electrons and neutrons

Atomic number...Atomic number (Z) is defined as the number of protons in the nucleus of an atom. Ex. Helium atom has 2 protons Atomic number of helium (Z) = number of protons = 2 Mass

How Atoms React Grade 9. Its all about the Electrons. Every element has its own unique number of protons = Atomic Number. Usually the number of protons

The Periodic Table Atomic Number (number of protons) Symbol Atomic Mass Period

C2 Chemistry An atom: Number of Protons = Number of Electrons Mass number = Protons + Neutrons Periodic table arranges elements by ATOMIC NUMBER (proton

Atomic Number Number of Protons. Mass Number Number of Protons + Neutrons

IGCSE CHEMISTRY STUDY NOTES UNIT 3 ATOMS, ELEMENTS & … · 2020. 6. 3. · protons, neutrons and electrons • Define proton number (atomic number) as the number of protons in the

Nuclear Chemistry L. Scheffler. The Nucleus The nucleus is comprised of the two nucleons: protons and neutrons. The number of protons is the atomic number

2 X A Z Mass Number Atomic Number Element Symbol Atomic number (Z) = number of protons in nucleus Mass number (A) = number of protons + number of neutrons

Electrons Chemistry Dr. May Atomic Inventory Protons (Atomic Number) Neutrons (Atomic Mass minus Protons) Electrons (Same number as protons)