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AQA Science © Nelson Thornes Ltd C2 1.1 True or false? How to play: Put your hand up for true, leave your hand down for false. Keep track of your score.
AQA Science © Nelson Thornes Ltd C2 1.1 The middle of an atom is called the nucleus. TRUE
AQA Science © Nelson Thornes Ltd C2 1.1 In an atom, the protons and electrons are in the nucleus. FALSE – only neutrons and protons are in the nucleus.
AQA Science © Nelson Thornes Ltd C2 1.1 The atomic number gives the number of protons in an atom. TRUE
AQA Science © Nelson Thornes Ltd C2 1.1 The number of protons in an atom is equal to the number of electrons in that atom. TRUE
AQA Science © Nelson Thornes Ltd C2 1.1 The elements in the periodic table are arranged in order of atomic number. TRUE
AQA Science © Nelson Thornes Ltd C2 1.1 The maximum number of electrons in the first shell is 8. FALSE – it is 2.
AQA Science © Nelson Thornes Ltd C2 1.1 The atomic number is also called the neutron number. FALSE – it is called the proton number.
AQA Science © Nelson Thornes Ltd C2 1.1 The charge on an electron is zero. FALSE – an electron has a charge of –1.
AQA Science © Nelson Thornes Ltd C2 1.1 What is your score out of 8 …? Try to beat your score next time or get 100% again!
AQA Science © Nelson Thornes Ltd C2 1.1 Ionic bonding game
C2 1.1 AQA Science © Nelson Thornes Ltd What is the correct way to show a sodium ion? Na + Na –
C2 1.1 AQA Science © Nelson Thornes Ltd What charge would be on a hydrogen ion? +1 –1
C2 1.1 AQA Science © Nelson Thornes Ltd Melting points of ionic compounds are…? low high
C2 1.1 AQA Science © Nelson Thornes Ltd Carbon dioxide has an ionic bond. True False
C2 1.1 AQA Science © Nelson Thornes Ltd Metals always make positive ions. True False
C2 1.1 AQA Science © Nelson Thornes Ltd Atomic Scientists C2 1.7 How have our ideas about atoms changed over the years?
C2 1.1 AQA Science © Nelson Thornes Ltd My name is Democritus and I am the father of the atomic theory! I was born in 460 BC, and put forward the idea of atoms. Even the word ‘atom’ comes from a Greek word meaning ‘cannot be cut’. I suggested that atoms were the smallest possible particles and that everything in the world was made from them stuck together in different patterns.
C2 1.1 AQA Science © Nelson Thornes Ltd My name is John Dalton and I was the first modern man to take atoms seriously. I was born in I suggested that atoms are small, cannot be broken apart and join together to make everything around us. We know that water contains hydrogen and oxygen so I suggested that one atom of hydrogen linked with one of oxygen to make a new compound – water! Democritus? Never heard of him!
C2 1.1 AQA Science © Nelson Thornes Ltd My name is J. J. Thompson but my friends call me JJ. I was born in 1856 and spent a lot of time working in the famous Cavendish Laboratory in Cambridge. I put forward the ‘plum pudding’ model of the atom based on work I did with cathode ray tubes (the thing you used to use for televisions). I suggested an atom consists of a tiny sphere with even smaller, negatively charged particles called electrons embedded in it … like fruit in a Christmas pudding! Pity Dalton didn’t know about electrons.
C2 1.1 AQA Science © Nelson Thornes Ltd My name is Ernest Rutherford. I was born in 1871 in New Zealand. I actually worked with ‘JJ’ and built on his plum pudding model to show that most of the atom was empty. Most of the mass was held in a tiny central nucleus with electrons flying around it like planets around the Sun. When JJ retired I took over his job at the Cavendish.
C2 1.1 AQA Science © Nelson Thornes Ltd My name is Neils Bohr and I was born in 1885 in Copenhagen. I worked with Rutherford and JJ Thompson and in 1913 I published a paper that showed how electrons flying around the atom fitted into shells – they didn’t just move randomly! I worked hard all of my life on atomic physics and only just escaped from Germany when the Nazis came to power. I ended up for a while in America where I worked on the atomic bomb project. After the war I spent a lot of time campaigning for peaceful uses of nuclear technology – including writing to the United Nations.
C2 1.1 AQA Science © Nelson Thornes Ltd My name is James Chadwick and I was born in 1885 in Cheshire. And yes, I also worked with Rutherford! My discovery was the neutron. It’s a tiny particle in the nucleus with a mass of one unit but no charge at all. It explains how different atoms of the same element can have different weights. It was an essential part of the theory that has led to the modern understanding of atoms.
Atomic Theory 1. The Atom 2 Early Theory Democritus (400 BC) thought the world was made of tiny indivisible particles Aristotle believed that all matter.
1 of 40© Boardworks Ltd of 40© Boardworks Ltd 2007.
Atomic Theory: A Timeline More than 2000 years ago ancient philosophers had theories on matter BC - Democritus believed that matter was made of.
History of Atomic Structure. Democritus Ancient Philosophy Who: Democritus When: 400 B.C. Where: Greece What: Democritus believed that matter was made.
History of the discovery of atomic structure. Beginning Man has always wanted to know, to understand how nature works. It is in his nature to ask questions.
S. Aldrich HISTORY OF THE ATOM 460 BCE Democritus develops the idea of atoms He believed that you could cut objects in half, over and over again,
The Beginning of the Atomic Theory Democritus was a Greek philosopher who was among the first to suggest the existence of atoms. 460 BC – 370 BC.
History of the Atomic Theory. Democritus Greek Philosopher 400 B.C. His theory: Matter could not be divided into smaller and smaller pieces forever,
Unit 3: Elements, Compounds, and Reactions HISTORY OF THE ATOM.
How did the atomic theory develop and change into the modern model of the atom?
Matter Anything that has mass and takes up space. Anything that has mass and takes up space. All matter can be measured All matter can be measured Mass.
The Atom. Two major parts of an atom Nucleus (not to scale) Electron Cloud.
Democritus: Believed all matter consisted of extremely small particles that could not be divided. Called these particles “Atomos”- Greek word meaning.
By: Amina Al-Naama 7D. An atom a fundamental piece of matter. Everything in the universe except energy is made of matter, and, so, everything in the universe.
History of the Atom Democritus Dalton (JJ Thompson) Rutherford Bohr Electron Cloud.
NOTES – Introduction to Atomic Theory ( ) Atomic Structure ● ATOM: the smallest particle of matter that has the properties of an element. ● From.
The Atom, Periodic Table, and Chemical Reactions Mrs. Hooks Unit 3.
Section 1: Introduction to Atoms. A.) What does all matter consist of? B.) How many elements are there? C.)What are elements made of? D.)What.
What is an _________? The smallest particle of an ________ that is still an ________ _________ are the building blocks of all ___________.
Atomic Structure What is an atom?. Atom An atom is the smallest physical particle of an element that still retains the properties of that element.
Atomic Structure History of Atomic Theory. Democritus ( BC) Was the first person to come up with the idea of atom Believed that all matter was.
Have 1 Periodic Table per group!. The mass number.
The Atom What defines the property of a substance.
History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago (400 B.C.) Where: Greece What: Aristotle believed.
Atomic Theory: the beginning Chapter 3 Part I. Democritus An Ancient Greek Theorized about the existence of atoms. Did not use Scientific Method.
Atoms and Atomic Theory. At the end of this lesson, you need to draw a diagram for each model showing the evolution of atomic theory: "Plum-Pudding" Model.
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.
How do we know all this stuff anyway?. About 6,000,000,000 (6 billion) people live on the earth About 300,000,000 (300 million) people live in the USA.
Have a Periodic Table & a calculator per group!. The mass number.
ATOMIC STRUCTURE THE ATOM. After completing this topic you should be able to : ATOMIC STRUCTURE THE ATOM State that every element is made up of very small.
Atoms: Building Blocks of Matter. Structure of an Atom Subatomic particles: 3 particles that make up an atom (protons, neutrons, e ee electrons) –N–Nucleus:
Blue- tin Red- silicon Green- lead Copper Atoms Platinum and Nickel Carbon atoms How did we get here? Click here to find out how we see atoms like the.
History of Atomic Theory. Essential Question How did the atomic theory evolve from Dalton's Postulates to the current modern atomic theory?
Atomic Theory-Democritus Greek philosopher, 400 BC Greek philosopher, 400 BC Named the smallest piece of matter “atomos,” meaning “not to be cut.” Named.
Atomic Structure. Democritus (460 BC – 360 BC) Ancient Greek philosopher ▪ No experiments performed! Major Contribution: The Atom ▪ He proposed.
Chapter 4: Atomic Structure Addison Wesley Chemistry.
Atoms and the Periodic Table Chapter 17 page 506.
History of Atomic Structure. Aristotle Democritus.
ATOMS!. Early models of the atom The existence of the atom was first proposed by Democritus of Abdera who lived in Greece during the 4th century B.C.
Timeline of atomic structure By Chelsea Nolan, Jorgia Leonard and Francesca Bertolacci.
Atoms: Development of the Atomic Theory 1. Democritus 460 BC - Greek philosopher proposes the existence of the atom 460 BC - Greek philosopher proposes.
History of Atomic Theories (The Changing Views of Atomic Structure)
ATOMIC THEORY Atomic Theory Pioneers Democritus: A Greek philosopher around the year 400 BC. concluded that matter could not be divided into smaller.
HISTORY OF THE ATOMIC MODEL ATOMIC THEORY Mrs. Gibson Physical Science.
History of Atomic Theory Review of In-Class Research Tuesday, September 15 th, 2015.
History of Atomic Structure. Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where: Greece What: Aristotle believed in 4.
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