1.3 Atomic Theory 1. John Dalton’s atomic theory - Matter is made up of small particles called atoms - Atoms cannot be created, destroyed or divided.

Slides:

Advertisements

Similar presentations

Atoms: Development of the Atomic Theory

Advertisements

Inside the Atom.

Development of the Atomic Theory

Powers of 10 What is the smallest unit of matter? Can we see atoms?

Atoms: Development of the Atomic Theory

Atoms: Development of the Atomic Theory

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

Atom Models From Democritus to Bohr’s.

Chapter 3 The History of the Atom. I. The Scientists and their Discoveries A.Democritus 1. Date = 400 B.C 2. Discovery = Theorized the smallest unit of.

The Atomic Theory. The Atom Protons and Neutrons.

OHHHHH YEAHHHHH.  400 BC Greece-philosophers  Democritus said that there must be something that cannot be divided  He called this particle atomos 

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.

TITLE The Development of Atomic Theory. Early Ideas Democritus—Greece 400 B.C. His idea:  There was a limit to how far you could divide matter. You would.

Instructional Objective: 1. Learn the atomic models 2

Chapter 4: Atomic Structure

The Structure of the Atom

Unit 2 Atomic Theory. An atom is… The smallest particle into which an element can be divided. “Building block of matter”

Atoms and the Periodic Table. What is an atom?  The Basic Building Block of matter.

Atomic Theory. Name the scientist whose atom looked like this…

Atomic Timeline. 650 BC - Greek Philosophers Earth Water Fire Wind.

(c) McGraw Hill Ryerson Atomic Theory Early ideas about matter The Greek philosopher Democritus believed that matter was made of atomos that were.

What is an atom??? An atom is the smallest particle of an element that retains its identity in a chemical reaction.

Development of the Atomic Theory

Basics Of Chemistry 8 th Science Matter Defined ► Matter – anything that has volume or mass. ► Everything you see and don’t see.

Warm Up: Density 9/10/14 1. Mass = 40g Volume = 20mL What is the Density? ___________ 2. Mass = 35g Density = 5 g /cm3 What is the Volume? 3. Density.

The Development of the Atomic Theory. Dalton’s Atomic Theory founder of the atomic theory atoms in Greek means indivisible, indestructible 1.All matter.

Development of the Atomic Theory. Democritus 460 BC - Greek philosopher proposes the existence of the atom ; calls it Atomos meaning indivisible. His.

Atoms Chapter 4.

Matter & Atoms Unit 2. Matter Matter – anything that has mass and takes up space. Matter is made up of MUCH smaller particles known as atoms. 1)

What Makes Up a Atom?. Atoms are the smallest unit of matter. Atoms are the smallest unit of matter. Atoms CANNOT be divided! Atoms CANNOT be divided!

Atomic Theories: How do we know what atoms are made of?

DEVELOPMENT OF THE ATOMIC THEORY ATOMS. 460 BC - Greek philosopher proposes the existence of the atom He pounded materials until he made them into smaller.

Properties of Matter. Element A pure substance that cannot be broken down into simpler substances by ordinary chemical means. Sulfur.

Chapter 6: An Introduction to Atoms. Atomic Theory Development Key Players – Democritus – Dalton – Thomson – Rutherford – Bohr.

A Brief History of the Atomic Theory. 460 B.C. : Democritus Greek Philosopher Proposed that matter cannot be broken down indefinitely At some point you.

The History of Atoms Not the history of the atom itself, but the history of the idea of the atom.

1.3 Atomic Theory  Greek philosophers believed that matter was made of atomos that were the smallest pieces of matter.  Aristotle believed matter was.

The Atom, Periodic Table, and Chemical Reactions Mrs. Hooks Unit 3.

The Atom What defines the property of a substance.

Introduction to the Atomic Theory. What is the Atomic Theory? – The Atomic theory is the study of the nature of atoms and how they combine to form all.

Historical Development of an Atom. Democritus B.C Democritus was a Greek philosopher ( B.C.) who is the father of modern atomic thought.

P. Sci. Unit 9 Chapter 4 Atoms. Atomic Structure – timeline Ancient Greece - Democritus proposed the atom – a tiny solid particle that could not be subdivided.

I. Atomic History A.Democritus ( BC) 1.Ancient Greek philosopher 2.Proposed matter was made of tiny indivisible particles 3.He called them atoms.

(8th) Chapter 4-1 Cornell Notes “Introduction to Atoms”

History of the Atom and Periodic Table.  Around 400 B. C., Democritus claimed all matter was made of tiny, indivisible particles called “atoms”.  Aristotle.

{ Atom and Isotope Review Physical Science. An atom has 6 protons, 8 neutrons, and 6 electrons. What is the atomic mass?

Atomic Theorists, Theories and History. Which law states the mass of the reactants must equal the mass of the products? 1.Law of conservation of mass.

Atomic Theory. English scientist John Dalton, suggested that matter was made up of elements An Element is a pure substance Each element is composed of.

Unit 3: Atomic Structure. Atomic Structure  element  matter that is composed of one type of atom  atom  the smallest particle of an element that still.

1-3A Behaviour of Gases Demo

You will have 3 minutes so work as fast as you can

Atoms: Development of the Atomic Theory

Matter Unit Structure of an Atom.

SCH3U Unit 1: Matter, Chemical Trends and Chemical Bonding

Aristotle an influential Greek philosopher 2500 years ago

The Atomic Structure of Atoms

1.3 Atomic Theory.

1.3 Atomic Theory Early ideas about matter

The Atomic Structure of Atoms

1.3 Atomic Theory.

(c) McGraw Hill Ryerson 2007

1.3 – ATOMIC THEORY.

Soon you will be a rocket scientist

SCH3U Unit 1: Matter, Chemical Trends and Chemical Bonding

Soon you will be a rocket scientist

(c) McGraw Hill Ryerson 2007

(c) McGraw Hill Ryerson 2007

The Basic Unit of Matter

Presentation transcript:

1.3 Atomic Theory

1. John Dalton’s atomic theory - Matter is made up of small particles called atoms - Atoms cannot be created, destroyed or divided - All atoms of the same element are identical in mass and size, but are different from other elements - Compounds are atoms of different elements linked together

2. JJ Thomson - Discovered negatively charged particles called electrons - “Raisin Bun” model...positive bun and negative raisins

3. Ernest Rutherford - Discovered the nucleus, a tiny positively charged centre of an atom - Nucleus had positive protons and neutral neutrons

4. Niels Bohr - Electrons surround the nucleus in shells and have a particular amount of energy

Atom – smallest particle of an element Subatomic particles – consist of electrons, protons and neutrons

 Positive protons and negative electrons are attracted to each other  Equal number of protons and electron in an atom so the overall charge is 0