Modern View of atom.

Slides:

Advertisements

Similar presentations

Solving atomic calculations: Working with: – Elements – Isotopes – Ions – Atomic # – Atomic mass – Charge.

Advertisements

Atomic Structure Section The Nucleus Nucleus- contains most of the mass of an atom – Protons & Neutrons contains most of an atom’s mass – Electrons-

Atomic Mass & Number Isotopes The Periodic Table.

Chapter 2 Atoms, Molecules, and Ions. Chapter 2 Table of Contents Return to TOC Copyright © Cengage Learning. All rights reserved The Early History.

Determining the NUMBER of Protons Electrons and Neutrons in Atoms, Ions, and Isotopes.

Chapter 2 Atoms, Molecules, and Ions. Section 2.2 Fundamental Chemical Laws Return to TOC Copyright © Cengage Learning. All rights reserved 2 Law of conservation.

Chemical Foundations: Elements, Atoms, and Ions Chapter 4.

Chapter 3 Atomic Structure and the Periodic Table.

Chemistry: Inside the Atom Chapter 3 Part 2. How Atoms Differ Atoms differ in the number of protons they have. – Oxygen has 8 Protons, Fluorine 9 Protons,

Masses of Atoms.

Chapter 1 #73 Copyright © Cengage Learning. All rights reserved.

Introduction to Atoms – Chapter 11

Section 2 Protons, neutrons, and electrons- how atoms differ

The Atomic Theory The smallest particle of an element that can enter into chemical change. 2. Building block of all matter. 3. Consists of a central nucleus.

The Modern View of Atomic Structure

Atomic Structure.

Matter & The Atom.

Atomic Structure Concepts.

Parts of the Atom PSSA: A/S8.C.1.1.

Atomic Structure and the Periodic Table

ELEMENTS, IONS AND ISOTOPES

Aim: What is an atom? DRAW IMAGES DO NOW: Identify X, Y, and Z as

Have you met atom? – Chapter 11

Atomic Structure Nat

Atomic Structure Chemistry, Unit 1.

Important Terms ATOM - Smallest unit of an element that keeps its chemical properties ELEMENT – Unique substance with the same number of protons in every.

ATOMS The word atom comes from the Greek atomos, meaning “indivisible.” An atom is the smallest identifiable unit of an element. There are about 91 different.

Modern Atomic Theory.

The Chemistry of Life The Nature of Matter.

Distinguishing Between Atoms

Bell work – what is an atom?

How do structures of atoms Differ?

Warm Up What can you infer about these three objects?

Atomic Number Atomic Mass

INTRODUCTION TO ATOMS CHAPTER 3 section 1.

Atomic Structure Most of the mass of an atom is concentrated in an extremely small, dense, and positively charges core called the nucleus The nucleus contains.

Matter & The Atom.

Chemistry-Part 1 Inside the Atom

Atomic Structure Chemistry.

Foldables: Atoms Terms.

Introduction to Atoms – Chapter 11

The Structure of an Atom

Intro to Atomic Structure

Atomic Structure Notes

ELEMENTS & ATOMS.

Structure of the Atom (Section 4.2)

1 The first shell always has to have 2 electrons!.

Chemistry Unit: Chapter 3

Atoms, Isotopes and Ions

Chem Get Atomic Structure Simulation WS stamped off if you did not do so last class. Today: Atomic Structure Practice Finish Unit 2 Corrections by end.

Structure of the Atom Nucleus- Protons Neutrons Electrons-

Structure of an Atom.

Structure of the Atom Describe the structure and arrangement of atomic particles. Characterize and classify elements based on their atomic structure.

Protons & Neutrons.

Isotopes & Ions.

Atomic Number, Mass Number, Atomic Mass and Isotopes

Unit 1 – Atomic Structure

The Structure of an Atom

Life depends on chemistry

Atomic Structure Nucleus Protons Neutrons Electrons.

September 9th, 2011 There should be a ‘mystery’ box at the front of your row. Make observations about the box WITHOUT opening it. Write this in your ‘Starter’

Chapter 6-2 part 1 The Atom.

Parts of the Atom.

Example Example 1: The atom of an element has a mass number of 214 and an atomic number of 82. a) How many protons and neutrons does it have? The number.

Presentation transcript:

Modern View of atom

Copyright © Cengage Learning. All rights reserved The atom contains: Electrons – found outside the nucleus; negatively charged. Protons – found in the nucleus; positive charge equal in magnitude to the electron’s negative charge. Neutrons – found in the nucleus; no charge; virtually same mass as a proton. Copyright © Cengage Learning. All rights reserved

Copyright © Cengage Learning. All rights reserved The nucleus is: Small compared with the overall size of the atom. Extremely dense; accounts for almost all of the atom’s mass. Copyright © Cengage Learning. All rights reserved

Nuclear Atom Viewed in Cross Section Copyright © Cengage Learning. All rights reserved

Copyright © Cengage Learning. All rights reserved Isotopes Atoms with the same number of protons but different numbers of neutrons. Show almost identical chemical properties; chemistry of atom is due to its electrons. In nature most elements contain mixtures of isotopes. Copyright © Cengage Learning. All rights reserved

Copyright © Cengage Learning. All rights reserved Two Isotopes of Sodium Copyright © Cengage Learning. All rights reserved

Copyright © Cengage Learning. All rights reserved Isotopes are identified by: Atomic Number (Z) – number of protons Mass Number (A) – number of protons plus number of neutrons Copyright © Cengage Learning. All rights reserved

Copyright © Cengage Learning. All rights reserved EXERCISE! A certain isotope X contains 23 protons and 28 neutrons. What is the mass number of this isotope? Identify the element. Mass Number = 51 Vanadium The mass number is 51. Mass Number = # protons + # neutrons. Mass Number = 23 + 28 = 51. The element is vanadium. Copyright © Cengage Learning. All rights reserved