TEK 8.5 Matter and energy. The student knows that matter is composed of atoms and has chemical and physical properties.

Slides:

Advertisements

Similar presentations

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.

Advertisements

Thursday March 5, Warm Up: Journals today Describe the law of conservation of mass.

Unit 2 – Atomic Theory Chapter 4 & 11.2 Unit Test:

The ATOM. Atoms the basic building block of all matter the smallest particle of an element that retains the properties of that element electrically.

Atoms: Development of the Atomic Theory

Development of the Atomic Theory

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

REVIEW: What is the Electron Cloud Model?

Atoms: Development of the Atomic Theory

P. Sci. Unit 8 Chapter 4 Atoms.

Atoms: Development of the Atomic Theory

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

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

Ch 7. Understanding the atom & Ch 8. elements and chemical bonds

Atomic Structure History and Theories. The Greeks 4 th century B.C. Democritus “Atomists” school of thought Matter is composed of tiny indivisible particles.

Instructional Objective: 1. Learn the atomic models 2

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

Atomic Theory How We Got Where We Are Today Robert Erwin UMS Rockwall ISD

Atomic Structure Objective: Describe the general structure of the atom, and explain how the properties of the first 20 elements in the Periodic Table are.

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

Using the Periodic Table

Periodic Table Unit 3. Vocabulary Atomic Number Atomic Mass Atomic Symbol Valence electron Orbital Electron Shell Energy Level Valence shell.

Atoms: Development of the Atomic Theory 1. Ancient Belief Ancient Greeks believed that all things were made up of earth, wind, fire, and water. Ancient.

Development of the Atomic Theory

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.

1 The Atom, in a nutshell…. 2 Democritus (c. 460—370 BC) Greek philosopher  The name atom was his idea  Proposed matter is made up of small particles.

Describe the mass, charge, and location of protons, neutrons, and electrons in atoms. S-105.

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.

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

Exploring Inner Space TEKS 8.5A describe the structure of atoms including the masses, electrical charges and locations, of protons and neutrons in the.

Atoms Chapter 4.

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.

Bellwork 10/19/15 Tell me about one or more of your family traditions. Minimum 5 sentences.

MODERN CHEMISTRY CH 3 Atoms: The Building Blocks of Matter.

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

1 The Structure of the Atom. 2 Early Theories of Matter.

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

Chemistry. Structure of an Atom Protons and an Atoms identity Valence Electrons and Reactivity The Periodic Table Chemical Formulas Chemical Reactions.

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

Structure of Matter The branch of science that explains how matter is put together is known as chemistry.

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.

P. Sci. Unit 8 Chapter 4 Atoms. Atomic Structure – timeline Ancient Greece - Democritus proposed the atom – a tiny solid particle that could not be subdivided.

+ ATOMIC THEORY. + Democritus Atom He was said to be the first step toward the current atomic theory. Hypothesized all matter is composed of tiny particles.

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.

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.

History of the Atom. Democritus ·Suggested matter was made of very small particles that could not be broken down further. ·He called the particles atoms,

Essential Question: What type of model did Thompson, Rutherford, and Bohr propose about the atom. ATOMIC STRUCTURE Atom- smallest particle of an element.

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.

Physical Science Goal 5 Structure and Properties of Matter.

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.

Chapter 3: Discovering the Atom and Subatomic Particles

Reporting Category 1: Matter and Energy 8.5A Know that matter is composed of atoms and has chemical and physical properties.

8 TH GRADE VOCABULARY M.ESPINDOLA-MORENO. ATOM The smallest particle of an element made of electrons, protons, and neutrons.

Unit 3 Atomic Structure.

Atomic Theory -a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms.

Unit 2 – Atomic Theory Chapter 4 & 11.2 Unit Test:

Atoms: Development of the Atomic Theory

Atoms: Development of the Atomic Theory

Unit 2: Chemical Reactions and Radioactivity 4

Atoms: Development of the Atomic Theory

Atomic Theory -a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms.

Atom Model History - Democritus a fifth century B.C. Greek philosopher proposed that all matter was composed of indivisible particles called atoms (Greek.

Atoms,and Elements Atoms.

The History of Atomic Theory

Atomic Structure.

Atoms: Development of the Atomic Theory

Atoms: Development of the Atomic Theory

Presentation transcript:

TEK 8.5 Matter and energy. The student knows that matter is composed of atoms and has chemical and physical properties.

The student is expected to: A) Describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons in the nucleus and electrons in the electron cloud. B) Identify that protons determine an element’s identity and valence electrons determine its chemical properties including reactivity. C) Interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements.

D) Recognize that chemical formulas are used to identify substances and determine the number of atoms of each element in chemical formulas containing subscripts. E) Investigate how evidence of chemical reactions indicate that new substances with different properties are formed. F) Recognize whether a chemical equation containing coefficients is balanced or not and how that relates to the law of conservation of mass.

Vocabulary Atom Element Subatomic particle Neutron Proton Electron Atomic Theory John Dalton JJ Thomson Ernest Rutherford Neils Bohr Erwin Schrodinger Louis de Broglie

Atomic Structure Notes

Element -substances that are the building blocks of all matter -made up of one kind of atom -Ex. Carbon, Hydrogen, Oxygen

Atom -The smallest particle into which an element can be divided and still maintain the properties of the element. -made up of sub-atomic particles

Subatomic Particles 3 main structures 1. Protons 2. Neutrons 3. Electrons

Protons (+) particles found in the nucleus of an atom. have a positive charge

Neutrons Particles found in the nucleus of an atom. Have a neutral charge

Electrons (e - ) Particles found in the electron cloud (orbiting the nucleus) Negatively charged

AMUs -atomic mass unit aka Dalton -used to describe the mass of subatomic particles -equal to ×10 − 27 kg

Sizes of Subatomic Particles ProtonsNeutronsElectrons 1 AMU.0005 AMU

Modeling Parts of an Atom

parts of an atom. Nucleus Electron Cloud Nucleus makes up 99.99% of atomic mass

Atomic Theory -a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms.

Democritus -influential pre-Socratic philosopher -formulated an atomic theory -400 B.C.

John Dalton Solid Ball +1803

JJ Thomson Plum pudding 1897 Plum Pudding Model Aka Muffin Model Aka Arroz con Leche Model Discovered Electrons

Ernest Rutherford Planetary Model 1909 Discovered Protons

Neils Bohr Proton Neutron Electron Nucleus 1913

Louis de Broglie & Erwin Schrodinger Electron Cloud Model1926

1927 Solvay Conference

PERIODIC TABLE Atoms Part II

Vocabulary Atomic Number Atomic Mass Atomic Symbol Valence electron Orbital Electron Shell Energy Level Valence shell

Atomic Number -reflects the # of protons in the nucleus and electrons in the electron cloud of a balanced atom of that element. ATOMIC NUMBER = # OF PROTONS & ELECTRONS

Atomic Number

Atomic Mass -the sum of the protons and the average number of neutrons

Atomic Mass

# of Neutrons Np+p+ - AM= Atomic Mass (rounded to nearest whole number) minus # of protons

AM-P=N Example

Atomic Symbol

Putting it all together Atomic Number Element Symbol Atomic Mass

Electron Orbitals aka Electron Shells aka Energy Levels -the amount of energy carried by an electron in an atom -determines the electron’s average distance from the nucleus

Energy Levels Nucleus 2 e - 8 e -

Nucleus

Valence Shell -the outermost shell of an atom in its uncombined state -all atoms want their valence shells filled.

Valence Electron electrons located in the valence shell # of valence e- will determine the reactivity of the atom. The more Valence e’s the more stable and HAPPY (Nole Gases) The less valence e’s the more reactive and EXPLOSIVE or UNHAPPY (Alkali Earth Metals)