Atoms, Molecules, and Ions Teacher Instructions: Go to www.Brainpop.comwww.Brainpop.com Login: edhpop Password: edhpop1 Go to Science Go to “Matter and.

Slides:

Advertisements

Similar presentations

Atomic Structure. What is an Atom? The smallest part of an element.

Advertisements

Add metal hydride naming. Chapter 2 Atoms, Molecules, and Ions.

Atoms, Molecules, and Ions Chapter 2 Atoms, Molecules, and Ions FAYETTEVILLE STATE UNIVERSITY COLLEGE OF BASIC AND APPLIED SCIENCES DEPARTMENT OF NATURAL.

Chapter 4 Atomic Structure

ATOMS The discovery and structure of atoms.. 1. Elements are composed of extremely small particles called atoms. All atoms of a given element are identical.

 You cannot see them, yet they make up everything…

Atoms, Molecules and Ions Chapter 2. Atomic Theory of Matter The theory that atoms are the fundamental building blocks of matter reemerged in the early.

The History of the Atom.

Atomic Theory and the Atom

Atoms and Atomic Theory Chapter Early Chemical Discoveries and the Atomic Theory.

Chapter Two: Atoms, Molecules and Ions

History of Atomic Theory

AP Chemistry – Chapter 2 Atoms, Molecules and Ions.

Chapter 2 Atoms, Molecules, Ions.

Early Theories & Subatomic Particles ( )

What are important discoveries related to the structure of an atom?

Unit: Atomic Structure

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

PART ONE ATOMIC THEORY. Over the course of thousands of years our idea of what matter is made of and what the atom looks like has changed dramatically.

Atomic Theory Chapter 3 Sections 1 &2 9/18/14.

The Historical Development of the Atomic Model From ancient Greece philosophy, to today’s model of the atom – The model of the atom demonstrates the purpose.

Atoms, Molecules, and Ions Defining the Atom The Greek philosopher Democritus (460 B.C. – 370 B.C.) was among the first to suggest the existence of atoms.

Atomic Theories. Atomic timeline Your poster should contain: –The date the theory was developed –A picture of the ‘model’ –The name of the main contributor.

Development of Atomic Structure How long have people been interested in understanding matter and its structure? A.Thousands of years B.Hundreds of years.

The Story of the Atom History and Other Early Stories.

The Structure of the Atom

Chapter 3: The Atom “The Building Blocks of Matter”

Starter S-23 What are the 3 parts of an atom?. Atomic Structure Chapter 4.

Atoms, Molecules, and Ions Chapter 2 Atoms, Molecules, and Ions John D. Bookstaver St. Charles Community College St. Peters, MO  2006, Prentice Hall,

Atomic Structure. 1. Democritus: Around 300 BC, a Greek philosopher, Democritus stated that everything is made up of tiny, invisible particles He said.

The Historical View of Atomic Structure Continued.

Slide 1 of 18 © Copyright Pearson Prentice Hall Defining the Atom > Atomic Structure Chapter 4 Video 3.

The Atom Pg. 29. Early Theories There was no experimentation Democritus- atoms are solid, homogeneous, indestructible, and indivisible Aristotle- believed.

History of Atom Flip Book

Atomic Structure. Early Theories of Matter Science as we know it did not exist several thousand years ago.

The Structure of the Atom Chapter 3 Chemistry: Matter and Change.

Atomic Theory and Structure. The Theory of the Atom _________ __, a Greek teacher in the 4th Century B.C., first suggested the idea of the atom. _________.

How do we know about atoms?

Atoms, Molecules, and Ions Chapter 2 Atoms, Molecules, and Ions.

1 The Structure of the Atom. 2 Early Theories of Matter.

Chemistry Chapter 4 Notes #1 09/10/10. Democritus Matter is composed of empty space where atoms move Atoms are solid, homogenous, indivisible, and indestructible.

Rev 6/7/ BC Atomic Model Development.

Bellwork08/20/2012 How long have people been interested in understanding matter and its structure? A.Thousands of years B.Hundreds of years C.A few years.

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

The Atom - Scientists. Philosophers Democritus – believed matter was not infinitely divisible THERE WERE NO EXPERIMENTS TO TEST HIS IDEAS Matter is composed.

Smallest particle of an element that retains the properties of the element.

Atomic Structure CHAPTER 4. Defining the Atom ✴ An atom is the smallest particle of an element that still has the chemical properties of that element.

History of the Atom. Atoms and Elements Any material that is composed of only one type of atom is called an element. An atom is the smallest particle.

C HAPTER 11 “T HE ATOMIC M ODELS ”. M ODELS OF THE A TOM OBJECTIVES : Identify the inadequacies in the Rutherford atomic model.

Chapter 3: Discovering the Atom and Subatomic Particles

Introduction to Atomic Theory. History of the atom Democritus (400 BC) suggested that the material world was made up of tiny, indivisible particles atomos,

Chapter 3 Atoms: The Building Blocks of Matter

Structure of the Atom Chapter 4.

Origin of the idea of atom…

Chapter 3 Atoms, Molecules, and Ions

Chapter 2 Atoms, Molecules, and Ions

Test 4: Chapter 4 – Atomic Structure

Warm-Up Draw a picture of an atom. Be as specific as you can!

DO NOW Pick up notes handout

Atomic Structure Ch. 4.

Lecture 0201 The Atomic Nature of Matter

4.1 & 4.2 Early Theories & Subatomic Particles

Do Atoms exist?.

Section 4.2 Pages

Atomic Structure.

Bell work Challenge Winning Group Will Earn +10 Test Points

Presentation transcript:

Atoms, Molecules, and Ions Teacher Instructions: Go to Login: edhpop Password: edhpop1 Go to Science Go to “Matter and Chemistry” Go to “Atoms” view video Have students complete quiz (graded) as a class, then go through the powerpoint. Have students define protons, neutrons and electrons on the page that they will complete the table on slide 13. Students must turn table and definitions in to their science teacher.

Basic Atomic Structure

EARLY THEORIES Democritus’s 460 – 370 B.C. Matter is composed of empty space through which atoms move. Atoms are solid, homogeneous, indestructible, and indivisible. Different kinds of atoms have different sizes and shapes. The differing properties of matter are due to the size, shape, and movement of atoms. Apparent changes in matter result from changes in the groupings of atoms and not from changes in the atoms themselves.

Atomic Theory of Matter The theory that atoms are the fundamental building blocks of matter reemerged in the early 19th century, championed by John Dalton.

Dalton’s Postulates Each element is composed of extremely small particles called atoms. All atoms of a given element are identical to one another in mass and other properties, but the atoms of one element are different from the atoms of all other elements. Atoms of an element are not changed into atoms of a different element by chemical reactions; atoms are neither created nor destroyed in chemical reactions. Compounds are formed when atoms of more than one element combine; a given compound always has the same relative number and kind of atoms.

The Electron Streams of negatively charged particles were found to emanate from cathode tubes. J. J. Thompson is credited with their discovery (1897).

Millikan Oil Drop Experiment Robert Millikan (University of Chicago) determined the charge on the electron in 1909 [ – 1] and he calculated the mass of an electron [9.1 × g].

The Atom, circa 1900: “Plum pudding” model, put forward by Thompson. Positive sphere of matter with negative electrons imbedded in it.

Discovery of the Nucleus Ernest Rutherford shot  particles at a thin sheet of gold foil and observed the pattern of scatter of the particles.

The Nuclear Atom Since some particles were deflected at large angles, Thompson’s model could not be correct.

THE NUCLEAR MODEL According to Rutherford, most of the atom consists of electrons moving rapidly through empty space and a very dense, positively charged nucleus.

Other Subatomic Particles By 1920, Rutherford had refined his concept of the nucleus: He concluded that the very dense nucleus contained positively particles called protons. James Chadwick, a coworker, showed that the nucleus also contained a neutral particle in This was the neutron – a particle with nearly equal mass as a proton.

Properties of Subatomic Particles ParticleSymbolLocationCharge Relative mass Actual mass (g) Electrone-e- Around nucleus 1– × Protonp+Nucleus × Neutronn0n0 nucleus ×10 -24

Atomic Structure and the Periodic Table 14 Si Silicon Atomic number = # protons & # electrons (if neutral atom) Symbol Name Atomic Mass: Round to a whole #: 28 = Relative mass of nucleus -14 = # protons 14 = # neutrons

Practice From the Periodic Table Complete the following chart: NameSymbol Relative mass # protons # neutrons # electrons Lithium Mg 26 16