The 2 locations in the atom are _ and . Protons have a _ charge and are located in the __________. Neutrons.

Slides:

Advertisements

Similar presentations

Elements & Atoms Atomic theory grew as a series of models that developed from experimental evidence. As more evidence was collected, the theory and models.

Advertisements

Atoms Chapter 2, Section 1.

Structure of an Atom.

The structure of the atom

Bell Work Please read section 6.6 pages

Chapter 5 Sections 2 and 3 Structure of an atom nucleus- center of an atom -discovered by Ernest Rutherford in 1911 proton (p+) -positively charged subatomic.

Atomic Structure Topic 3.

Atomic Structure Unit 2—Part III. What is an atom? Atom: the smallest unit of matter that retains the identity of the substance First proposed by Democratus.

Atoms 8.5A The student is expected to describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons.

Ch. 6 Notes Atoms and Elements Headings: YELLOW Vocabulary: GREEN Important Stuff: PINK.

Atomic Models Atomic Models Please wait to turn in your homework! Be in your seat when the bell rings!

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.

MATTER UNIT STRUCTURE OF AN ATOM.  Atom : the smallest unit of matter that retains the identity of the substance.

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.

Matter & The Atom. Matter The term matter describes all of the physical substances around us Matter is anything that has mass and takes up space The Universe.

The Parts of an Atom.

Atomic Structure lecture 4.1. Atomic structure Small, dense nucleus Protons: (+) charge Neutrons : (0) no charge Electrons: (-) charge # Protons = # electrons.

Chapter 4: Atomic Structure

Matter & The Atom. Matter  The term matter describes all of the physical substances around us  Anything that has mass and volume (takes up space) 

Warmup: Concept: PS-2.1 Compare the subatomic particles.

Describing the Structure of ATOMS

Parts of an Atom An atom consists of a nucleus surrounded by one or more electrons The nucleus is the center region of the atom where the protons and neutrons.

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

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

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.

Introduction to Atoms Chapter 14 Section 1. History of Atom All atoms share the same basic structure All atoms share the same basic structure During past.

ATOMIC STRUCTURE Modern theory of matter. LET’S REVIEW Dalton’s atomic theory – Elements are made of atoms ; all atoms of an element are identical, atoms.

Matter & The Atom. Matter The term matter describes all of the physical substances around us: your table, your body, a pencil, water, and so forth.

Chapter 2: The Chemistry of Life

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!

HISTORY OF THE ATOM MODERN THEORIES OF ATOMIC STRUCTURE.

Periodic Table of Elements

History and Structure of the Nuclear Atom

 Turn in your homework if you have it. Lab Sheet and Measuring Matter due tomorrow!!  Date your journal. Title: Atomic Structure.

The Atomic Theory Democritus Dalton 440 B.C. – Thought matter was made of tiny particles – Believed these particles could not be cut into anything smaller.

Atomic Theories and Models. Learning Goal I will be able to explain how the theory of the atom evolved based on various experiments.

Unit: Chemistry Lesson 1: Introduction to Atoms Essential Questions: 1.) How did atomic theory develop? 2.) What is the modern model of the atom?

Matter & The Atom. Matter The term matter describes all of the physical substances around us Matter is anything that has mass and takes up space The Universe.

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

Journal #20 1. Who discovered the electron? 2. What did Rutherford discover?

Structure of an Atom. The Three subatomic particles of an atom: Proton Neutron Electron.

The Atom. What is Matter? anything that has mass and takes up space matter is made up of atoms.

The Evolution of the Atom

Matter & The Atom. Matter The term matter describes all of the physical substances around us: your table, your body, a pencil, water, and so forth.

Structure of an Atom Nucleus: Nucleus:Proton.

Unit 3: The Atom. Atoms All matter is made of very tiny particles All matter is made of very tiny particles These particles have the same properties as.

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

Atomic Structure Notes. Thomson Model The “pudding” had a positive charge and the “plums” had a negative charge.

Small individual particles that make up matter. This includes gases.

Introduction to Atoms. What is the smallest particle into which an element can be divided and still be the same substance? A. electron B. neutron C. proton.

Subatomic Particles protons, neutrons and electrons.

THE STRUCTURE OF THE ATOM.  All atoms consist of 2 regions:  1) Nucleus: very small region located near the center of the atom  Proton: positively.

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

Class Notes: Atomic Models. Democritus= 400 B.C. – said the world was made of two things: empty space and tiny particles called “atoms” --said atoms were.

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.

The Atomic Theory – p Democritus  Democritus, 440 B.C.  Thought matter was made of tiny particles  Believed these particles could not be cut.

What is an atom? Try to come up with your own definition. Now turn to your partner and discuss.

4.3 The Atom An atom is the smallest particle of an element that retains the characteristics of that element. Aluminum foil contains atoms of aluminum.

Structure of an Atom & The Charge of An Atom

Inside An Atom.

Evolution of the atomic model

Atoms Atomic Structure.

Unit 1 Vocabulary Atom – smallest particle of an element that maintains the properties of that element Atomic mass – average mass of one atom of an element.

section 1 Introduction to Atoms

Presentation transcript:

The 2 locations in the atom are _____________ and __________________. Protons have a _____________ charge and are located in the ________________. Neutrons have a _______________ charge and are located in the ____________. Electrons have a _______________ charge and are located in the _______________________.

 Rutherford  Dalton  1904  JJ Thomson1913 Bohr  Plum pudding

A conceptual model of the atom in which a small positively-charged nucleus is surrounded by planetary electrons

1. NUCLEUS  Small Center of the Atom  Made of Protons and Neutrons  Mass of the Atom  Positively Charged 2. ELECTRON CLOUD - Surrounds the Nucleus - Mostly empty space - Where electrons orbit the nucleus - The cloud is huge, the electrons are tiny - The electron cloud has areas where electrons are more likely to be found and areas where they are less likely to be found

A football stadium, which represents the atom The nucleus would be in the center on the 50 yd line, but the protons and neutrons that make up the nucleus would be about the size of sesame seeds. Almost all of the mass is here!! The rest of the stadium would be the electron cloud, but the electrons would not be able to be seen if the atom were the size of a football stadium. Atoms are mostly empty space!!!!

 Positively charged particles  Help make up the nucleus of the atom  Help identify the atom (could be considered an atom’s DNA)  Equal to the atomic number of the atom  Contribute to the atomic mass  Equal to the number of electrons

 Neutral particles; have no electric charge  Help make up the nucleus of the atom  Contribute to the atomic mass

 Negatively charged particles  Found outside the nucleus of the atom, in the electron orbits/levels (rings) 2 –  Move so rapidly around the nucleus that they create an electron cloud  Mass is insignificant when compared to protons and neutrons (mass is negligible)  Equal to the number of protons  Involved in the formation of chemical bonds

Particles that are smaller than the atom PROTONS (P+) in nucleus NEUTRONS (N o ) in nucleus ELECTRONS (e -) in electron cloud

Roll the pink clay into a proton. What is the charge of the proton? Roll the green clay into a neutron. What is the charge of the neutron? Roll the blue clay into an electron. What is the charge of the electron? Which 2 subatomic particles are the same size?