Lesson 2.1 – Atomic Structure History of the Atom.

Slides:



Advertisements
Similar presentations
Chapter 3 Atoms: The Building Blocks of Matter 3.1 The Atom:
Advertisements

Democritus & Aristotle/ John Dalton. Democritus Democritus was alive 460 B.C B.C. Was a Greek philosopher He had no formal education and learned.
Chapter 3.1. Objectives 1. Explain the law of mass, the law of definite proportions, and the law of multiple proportions 2. Summarize the five essential.
Atomic Structure. What is an Atom? The smallest part of an element.
The ancient Greeks tried to explain matter, but the scientific study of the atom began with John Dalton in the early 1800s. Section 1: Early Ideas About.
Atomic Theory “History of. . . ”.
 You cannot see them, yet they make up everything…
J OHN D ALTON ' S ATOMIC THEORY. J OHN D ALTON English, Chemist, meteorologist and physicist Careful study of Red – green color blindness Atomic.
TOPIC 1: Isotopes. Potassium % Potassium % Potassium % PROTONS ELECTRONS NEUTRONS There are 3 isotopes of K atoms.
The “original”.  English scientist  Theory proposed in 1803  Billiard Ball ◦ aspx
Early Ideas About Matter Section 4.1
Atoms: The Building Blocks of Matter The Atom: From Philosophical Idea to Scientific Theory.
Atomic Theory History of Atom Early Greeks believed that matter consisted of tiny particles – they called the “atoms”
Early Models of the Atom An atom is the smallest particle of an element that retains its identity in a chemical reaction. Philosophers and scientists have.
The Atom.
Development of our understanding of the atom. Early Models Democritus was first to suggest atom in 4 th century B.C. Believed matter was made of tiny.
History of Atomic Structure
Atom Models From Democritus to Bohr’s.
CHEMISTRY 112 Atomic Structure. Early Models of the Atom An atom is the smallest particle of matter that retains its identity in a chemical reaction Democritus.
John Dalton’s Atomic Theory of Matter Designed Literally To Explain Why Matter Acts the Way It Does.
B y: Dev Patel and Arnold Hernandez. Aristotle/Democritus (Ancient Philosophy)  Who- Aristotle and Democritus  When-More than 2,000 years ago  Where-Greece.
Part I. 460 BC - Develops the idea for atoms He pounded up materials in his pestle and mortar until he had reduced them to smaller particles He determined.
Discovery of the Atom. Democritus  Democritus was an ancient Greek who had a philosophical idea of an atom.  His approach was not based on the scientific.
Atomic Theory “History of... ”. The Ancient Greeks Democritus and other Ancient Greeks were the first to describe the atom around 400 B.C. The atom was.
Chapter 4: Atoms and Elements.  Recognize that all matter is composed of atoms.  Explain the early ideas that led to the current understanding of the.
DALTON’S ATOMIC THEORY 1803 Read each of the following postulates and determine whether each is True or False.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Table of Contents Chapter 3 Atoms: The Building Blocks of Matter.
Chapter 4 The Structure of the Atom. Section 4.1 Early Ideas About Matter.
Atomic Structure. 1. Democritus: Around 300 BC, a Greek philosopher, Democritus stated that everything is made up of tiny, invisible particles He said.
GSCI 163 Lecture 2. Atomic theory What are things made of? Imagine dividing an object into smaller and smaller units. Is there a limit to how much we.
standard: i & e (1n) terms: 87 article: 90 & 110 mastering concept: 112(29-33) Homework Cornell notes: 4.1 sec. assessment: 91(1-4) 1.
History of Atom Flip Book
History of the Atom Democritus Democritus: It was 400 BC when he came up with the idea that matter could not be divided indefinitely. This lead to the.
Development of Atomic Theory Unit 2 Chapter 4, Section 1.
Atomic Structure PSC Chapter 3. Atomic Theory of Matter Evidence of atoms Law of Definite Proportions Law of Conservation of Mass Law of Multiple Proportions.
Matter: anything that has a mass BUT…. What is matter made up of?
Chapter 3 Lesson Starter Young people should not smoke.
Important People in the Development of Atomic Theory Exam Review.
The Building Blocks of Matter. Objectives Recognize that science is a progressive endeavor that reevaluates and extends what is already known. (SPI 3221.
Ch. 3: Atoms 3.1 Foundations. History  Democritus named the most basic particle named the most basic particle atom- means “indivisible atom- means “indivisible.
 Objectives: ◦ Explain  The law of conservation of mass  The law of definite proportions  The law of multiple proportions ◦ Summarize the 5 points.
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.
 Suggested Reading pgs Pages Chapter 3, Section 1 - Atoms STM (scanning tunneling microscope) image of a single zigzag chain of cesium.
Section 1 The Atom: From Philosophical Idea to Scientific Theory
Dalton’s Atomic Theory. Law of Conservation of Mass The total mass of materials after a chemical reaction is the same as the total mass before the reaction.
The Atom Democritus-teacher & philosopher (400BC) Hypothesized : smallest unit of matter is atom (Greek “atomos” – indestructable)
1 History – Democritus to Dalton Mr. ShieldsRegents Chemistry U01 L01.
Atoms: PAGE 37 OF INB. Essential Question  How are Dalton’s atomic theory and modern atomic theory similar and different?
3-1 Early Models of the Atom. Atoms? ► The Greek Philosopher Democritus  Proposed that all matter is made up of small indivisible particles  Called.
Chemistry What is chemistry? –Chemistry is the study of matter, what it is made of, and how it changes. What is matter? –Matter is anything that… Has.
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.
MAIN IDEAS 1.Atom 2.Dalton’s Atomic Theory KEY CONCEPTS 1.How did Democritus describe atoms? 2.How did John Dalton further Democritus’s ideas on atoms.
Chapter 2.1 The Atomic Theory of Matter. The History of the Atom Greek philosophers in 450 BC Atomos- invisible particles Plato and Aristotle No invisible.
ATOMIC THEORY Philosophical Idea to Scientific Theory Chapter 3 Section 1.
Chapter 5 Section 1 -In chemistry we must believe in things we cannot see -matter is made up of such tiny particles -everything is made up of matter -matter.
The Atom - Scientists. Philosophers Democritus – believed matter was not infinitely divisible THERE WERE NO EXPERIMENTS TO TEST HIS IDEAS Matter is composed.
Scientists The atom. Democritus BC- Greek philosopher - No experimenting -Matter made up of indivisible particles = “atomos”
From Philosophical Idea to Scientific Theory
Ch. 3 – Atoms: The Building Blocks of Matter
Section 3.1. Atomic Theory  400 BC – Democritus  Coined the term atom from the Greek word atomos  Philosophical Idea – No Experimental Evidence  Idea.
1. Pick up a picture from teacher 2. Conduct research using your phones and textbook to find: birth date- death date country, state, city of origin major.
Structure of the Atom Chapter 4.
The ancient Greeks tried to explain matter, but the scientific study of the atom began with John Dalton in the early 1800's.
The Atom: From Philosophical Idea to Scientific Theory
The Atom: From Philosophical Idea to Scientific Theory
ATOMIC STRUCTURE and the PERIODIC TABLE
Section 1: Early Ideas About Matter
Early Theories of Matter
Section 1: Early Ideas About Matter
Atoms: The Building Blocks of Matter
Presentation transcript:

Lesson 2.1 – Atomic Structure History of the Atom

Discovery of the Atom Timeline

Ancient Philosophers Democritus ( bc) All matter is composed of individual atoms that are indivisible and solid Atoms move through empty space No experimentation was done

Ancient Philosophers Aristotle ( BC) Disagreed with Democritus Didn’t believe in empty space Democritus' idea for the atom was ignored for over 2000 years

John Dalton ( ) Dalton’s Theory (1808)  Matter is composed of extremely small indivisible particles called atoms

Dalton’s Theory Continued All atoms of a given element are identical, (size, mass, properties). Atoms of a specific element are different from those of any other element.

Dalton’s Theory Continued Atoms can’t be created, destroyed or divided

Dalton’s Theory Continued Atoms combine to form compounds

Dalton’s Theory Continued In a chemical reaction, atoms are separated, combined, or rearranged.

Dalton’s Theory Continued  *** These are almost all right – which one’s aren’t?

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.