Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be...

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Transcript of Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be...

Page 1: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

Atomic ModelsAtomic Models

Page 2: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

JOHN DALTONJOHN DALTONEarly 1800’sThought atoms were smooth, hard balls

that could not be broken into smaller pieces.

All elements are made of atoms.All atoms of the same element are exactly

alike and have same mass.An atom of one element cannot be

changed into an atom of a different element.

Atoms cannot be created nor destroyed, only rearranged.

Compounds are made from atoms of different elements.

Page 3: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

JOHN DALTONJOHN DALTON

Atomic Model Object used to represent theory

Page 4: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

J.J. THOMSONJ.J. THOMSON1897An atom consists of negative

charges scattered throughout a ball of positive charges.

Page 5: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

J.J. THOMSONJ.J. THOMSON

Atomic Model Object used to represent theory

Page 6: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

ERNEST RUTHERFORDERNEST RUTHERFORD1911Rutherford was a student of

Thomson.Positive charge (protons) is located

in the center of the atom.Center is called the nucleus.Almost all of the atom’s mass is

located in the nucleus.Atom is mostly empty space with

the electrons moving around the nucleus.

Page 7: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

ERNEST RUTHERFORDERNEST RUTHERFORD

Atomic Model Object used to represent theory

Page 8: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

NEILS BOHRNEILS BOHR1913Bohr was a student of Thomson &

RutherfordElectrons could only have specific

amounts of energy, leading them to move in certain orbits.

This model is also compared to planets orbiting in the solar system.

Page 9: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

NEILS BOHRNEILS BOHR

Atomic Model Object used to represent theory

Page 10: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

MODERN SCIENTISTSMODERN SCIENTISTS1920’sElectrons do not orbit the nucleus

like planets, rather they can be anywhere in a cloudlike region around the nucleus.

Electrons of the same energy are in the same energy level.

Page 11: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

JAMES CHADWICKJAMES CHADWICK1932Found that the atom has a

particle that was electrically neutral (neutron).

Page 12: Atomic Models. JOHN DALTON Early 1800’s Thought atoms were smooth, hard balls that could not be broken into smaller pieces. All elements are made of atoms.

MODERN SCIENTISTS / JAMES MODERN SCIENTISTS / JAMES CHADWICKCHADWICK

Atomic Model Object used to represent theory


John Dalton (6 september 1766 27 juli 1844) was een Brits scheikundige en natuurkundige.6 september176627 juli1844scheikundigenatuurkundige Atoms.

John Dalton (6 september 1766 27 juli 1844) was een Brits scheikundige en natuurkundige.6 september176627 juli1844scheikundigenatuurkundige Atoms.

Development of the Atom Chapter 4.1-4.2 JOHN DALTON All matter is composed of atoms All atoms of a given element are identical Atoms of specific elements.

Development of the Atom Chapter 4.1-4.2 JOHN DALTON All matter is composed of atoms All atoms of a given element are identical Atoms of specific elements.

Teaching about atoms, nuclei, and isotopes using Bozagga balls

Teaching about atoms, nuclei, and isotopes using Bozagga balls

1 Electrons in Atoms. 2 Dalton’s Atomic Theory John Dalton (1766-1844) had four theories John Dalton (1766-1844) had four theories 1. All elements are.

1 Electrons in Atoms. 2 Dalton’s Atomic Theory John Dalton (1766-1844) had four theories John Dalton (1766-1844) had four theories 1. All elements are.

Chapter 2 Atoms, Molecules, & Ions. Atomic Theory Elements composed of atoms Atoms can’t be changed Compounds of multiple atoms John Dalton.

Chapter 2 Atoms, Molecules, & Ions. Atomic Theory Elements composed of atoms Atoms can’t be changed Compounds of multiple atoms John Dalton.

Chapter 2 Atoms, Molecules, and Ions Early Atomic Theory History n Democritus – “Atomos” (has idea of atoms) n John Dalton & His Laws n J.J. Thompson.

Chapter 2 Atoms, Molecules, and Ions Early Atomic Theory History n Democritus – “Atomos” (has idea of atoms) n John Dalton & His Laws n J.J. Thompson.

1 Atoms, Molecules, and Ions Chapter 2 2 John Dalton ( early 1800s): –Each element is composed of atoms –All atoms of an element are identical. –In chemical.

1 Atoms, Molecules, and Ions Chapter 2 2 John Dalton ( early 1800s): –Each element is composed of atoms –All atoms of an element are identical. –In chemical.

Chapter 2 Atoms, Molecules, and Ions - MSU Chemistry · PDF fileChapter 2 Atoms, Molecules, and Ions ... Chemistry happens when the balls rearrange . Atoms, ... of gold foil and

Chapter 2 Atoms, Molecules, and Ions - MSU Chemistry · PDF fileChapter 2 Atoms, Molecules, and Ions ... Chemistry happens when the balls rearrange . Atoms, ... of gold foil and

Atoms and Ions. Discovery of atomic structure Atoms – the building blocks All substances are made from very tiny particles called atoms. John Dalton.

Atoms and Ions. Discovery of atomic structure Atoms – the building blocks All substances are made from very tiny particles called atoms. John Dalton.

Atoms and Molecules - Kendriya Vidyalaya · Web viewAtoms and Molecules Laws of Chemical Combinations Before Dalton concept of atom was mere philosophical. Dalton explained about

Atoms and Molecules - Kendriya Vidyalaya · Web viewAtoms and Molecules Laws of Chemical Combinations Before Dalton concept of atom was mere philosophical. Dalton explained about

Chapter 2: Atoms, Molecules, and Ions The Atomic Theory of Matter John Dalton (1766-1844): Elements are made of tiny particles called atoms atoms of different.

Chapter 2: Atoms, Molecules, and Ions The Atomic Theory of Matter John Dalton (1766-1844): Elements are made of tiny particles called atoms atoms of different.

Dalton All Matter is Made of Indivisible and Indestructible Atoms

Dalton All Matter is Made of Indivisible and Indestructible Atoms

Dalton’s Atomic Model - Mister Tam's Science Resource · John Dalton (1766-1844) Dalton’s Atomic Model All matter is made up of atoms. John Dalton (1766-1844) Dalton’s Atomic

Dalton’s Atomic Model - Mister Tam's Science Resource · John Dalton (1766-1844) Dalton’s Atomic Model All matter is made up of atoms. John Dalton (1766-1844) Dalton’s Atomic

AP* Chemistry ATOMS, MOLECULES & IONS...Atoms, Molecules and Ions 4 2.4 EARLY EXPERIMENTS TO CHARATERIZE THE ATOM Based on the work of Dalton, Gay-Lussac, Avogadro, & others, chemistry

AP* Chemistry ATOMS, MOLECULES & IONS...Atoms, Molecules and Ions 4 2.4 EARLY EXPERIMENTS TO CHARATERIZE THE ATOM Based on the work of Dalton, Gay-Lussac, Avogadro, & others, chemistry

1. Which idea of John Dalton is no longer 3.kmacgill.com/documents/1_chem_msrment/nc_eoc... · 1. Which idea of John Dalton is no longer considered part of the modern view of atoms?

1. Which idea of John Dalton is no longer 3.kmacgill.com/documents/1_chem_msrment/nc_eoc... · 1. Which idea of John Dalton is no longer considered part of the modern view of atoms?

John Dalton (1803) Atomic Contribution (See back of notes) 1.All matter composed of atoms 2.Atoms of same elements are alike 3.Atoms of different elements.

John Dalton (1803) Atomic Contribution (See back of notes) 1.All matter composed of atoms 2.Atoms of same elements are alike 3.Atoms of different elements.

An atom is the basic building What is an atom? All objects ...€¦ · • In 1805, English chemist John Dalton proposed and published he theory on atoms. • Dalton believed matter

An atom is the basic building What is an atom? All objects ...€¦ · • In 1805, English chemist John Dalton proposed and published he theory on atoms. • Dalton believed matter

1 Atoms and Elements Chapter 2. 2 Atomic theory John Dalton, 1808: matter is made of tiny indestructible particles called atoms What evidence persuaded.

1 Atoms and Elements Chapter 2. 2 Atomic theory John Dalton, 1808: matter is made of tiny indestructible particles called atoms What evidence persuaded.

1 Electrons in Atoms. 2 Daltons Atomic Theory John Dalton (1766-1844) had four theories John Dalton (1766-1844) had four theories 1. All elements are.

1 Electrons in Atoms. 2 Daltons Atomic Theory John Dalton (1766-1844) had four theories John Dalton (1766-1844) had four theories 1. All elements are.

Chapter 2. In 1808 an English scientist John Dalton, formulated a precise definition of the of atoms:

Chapter 2. In 1808 an English scientist John Dalton, formulated a precise definition of the of atoms: