ATOM Smallest particle of an element with all its properties.

Slides:

Advertisements

Similar presentations

Have a Periodic Table & a calculator per group!.  The mass number.

Advertisements

Have 1 Periodic Table per group!.  The mass number.

Atoms This goes in the Chemistry section of your binder.

4-1: Introduction to Atoms

Atomic Structure Nucleus – contains protons and neutrons

Atomic Mass & Number Isotopes The Periodic Table.

Objectives:  1. Name and describe the three subatomic particles in an atom.  2. Determine the number of protons, neutrons, and electrons in an atom or.

Section 1: Introduction to Atoms

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

TOPIC 1: Isotopes. Potassium % Potassium % Potassium % PROTONS ELECTRONS NEUTRONS There are 3 isotopes of K atoms.

Chapter 4: Atomic Structure

I. Structure of the Atom Dalton’s Atomic Theory Subatomic Particles

Chemistry Chapter 3 Review Game. ChemistryChemistry Chemistry 1 point 1 point 1 point 1 point 1 point 1 point 1 point 1 point 2 points 2 points 2 points.

THE STRUCTURE OF ATOMS Pg. 43. Daily science- pg. 40  Who discovered the neutron? Electron? Nucleus?  What did Democritus theorize?  Name two differences.

“Old dead guys”.  400 BC- Democritus- first to come up with the idea that things are made of “atoms”

Atomic Structure.

17.1 Atomic Structure *no need to write italicized notes.

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.

Atoms They make up EVERYTHING!!! This information is REALLY Important for the Rest of your Educational Career!!!!

The Structure of the Atom. Modern Concept of Atomic Theory 1.Atom consists of a tiny nucleus 2.Electrons move in an area directly surrounding the nucleus.

The Atom Chapter 11 Notes and Review By: Mr. Steffen.

Atomic Structure Notes Atomic Structure Subatomic particles include ________, _________ and _________. protons neutrons electrons ________ and.

Atomic Structure Chm Matter MixturesPure Substances.

The Atom and Its Parts Physical Science.  The three subatomic particles are:  Proton – Positive charge  Electron – Negative charge  Neutron – No charge.

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

What do atoms look like?. What do we know about atoms? *All elements are composed of atoms *The atoms of the same element are the same (and different.

Atomic Structure Gold is an element. An element is a substance which cannot be broken down into simpler substances under normal circumstances. This means.

Atomic Structure - Two Observable Facts made in the 1800’s Law of Conservation of Mass –Matter is neither created nor destroyed in a chemical reaction.

Masses of Atoms Chapter 19-2 Pages

Elements vs. Compounds Elements can NOT be chemically broken down to a simpler substance, compounds can. (Ex. 2H 2 O  2H 2 + O 2 ) Most materials are.

Atoms. Elements vs. Compounds  Elements can NOT be chemically broken down to a simpler substance, compounds can. (Ex. H 2 O  H 2 + O 2 )  Pure substances.

1. Proton 2. Neutron 3. Electron 1. Protons 2. Neutrons 3. Electrons.

 As early as 400 BC, a few people believed that atoms are the building blocks of all matter. Yet, until recently, even scientists had never seen evidence.

Daily science- pg. 30  Create a table like the following on page 30 in your notebook. Label this page History of the Atom. Leave a few lines for each.

How do we know about atoms?

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!

© 2006 Plano ISD, Plano, TX Atomic Structure © 2006 Plano ISD, Plano, TX Gold is an element. An element is a substance which cannot be broken down into.

The building blocks of matter! ©2011 University of Illinois Board of Trustees

Atomic Structure.

How did the atomic theory develop and change into the modern model of the atom?

Atoms: Building Blocks of Matter

Chapter 4 Atomic Structure. Atom Atom – smallest part of an element that retains the properties of that element. Atomic Theory – proposed by John Dalton.

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

Atoms Atom- the smallest part of an element Atoms of one element are different from another element. contains protons, electrons, and neutrons Atomic Mass.

Structure of the Atom Refer to: Science Probe 10 - Chapter 8.

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.

LEARNING ABOUT ATOMS BY READING THE PERIODIC TABLE.

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.

Atomic Mass. Atomic mass Most of the mass of an atom is in the nucleus. Most of the mass of an atom is in the nucleus. The nucleus is where all of the.

Atomic Mass. Each element found on the periodic table of elements is given an atomic mass The atomic mass tells you the average mass of the atoms of an.

The Atom What defines the property of a substance.

An atom consists of a nucleusnucleus –(of protons and neutrons) electrons in space about the nucleus.electrons in space about the nucleus. The Atom Nucleus.

Chapter 4 Practice Questions. Which subatomic particle has a negative charge? 1.electron 2.proton 3.neutron 4.nucleus

The Structure of the Atom. 1.The Atom a. “the building blocks” of all matter b. Particles that make up the atom: 1.Nucleus a. “core” of the atom b

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.

Structure of Atoms In the mid-1800s scientists discovered that atoms can be broken into pieces after all. The smaller parts that make up atoms are called.

Atomic Structure Review Which of the following is NOT true about electrons? a) They have a negative charge b) They are the heaviest subatomic particle.

Chapter 4, Section 1 Introduction to Atoms. Democritus A philosopher in 430 B.C. who theorized that matter was made up of small pieces that could not.

Essential Question: How do atoms of the same element differ?

 Atoms  Elements are made of particles called atoms  Atoms are the smallest pieces of matter that contain all the properties of a specific element.

© 2006 Plano ISD, Plano, TX Atomic Structure © 2006 Plano ISD, Plano, TX An element is a substance which cannot be broken down into simpler substances.

All Need to Know About Atoms

The Atom CHAPTER 26.

Important Terms ATOM - Smallest unit of an element that keeps its chemical properties ELEMENT – Unique substance with the same number of protons in every.

INTRODUCTION TO ATOMS CHAPTER 3 section 1.

Isotopes QUICK NOTES Carbon-14

Title: Atomic Properties

Presentation transcript:

ATOM Smallest particle of an element with all its properties

Periodic Table

H ATOMIC NUMBER SYMBOL ATOMIC MASS

Three main parts +PROTON +NEUTRON +ELECTRON

PARTICLELOCATIONCHARGE MASS PROTONNUCLEUS POSITIVE + 1 A.M.U ELECTRONELECTRON CLOUD NEGATIVE - 1/1836 A.M.U NEUTRON NUCLEUSNONE 1 A.M.U

Most of an atom is empty space. The nucleus of the atom contans amost all of the mass of the atom. A greatly enlarged atom might look like a marbel (the nuceus)insde an empty football stadium.

TO FIND # OF PROTONS ATOMIC NUMBER = NUMBER OF PROTONS NUMBER OF PROTONS = NUMBER OF ELECTRONS

NEUTRON Atomic mass (rounded off) -subtract ATOMIC NUMBER _____________________ NUMBER OF NEUTRONS

ISOTOPE ATOMS OF THE SAME ELEMENT WITH THE SAME NUMBER OF PROTONS/ELECTRONS BUT A DIFFERENT # OF NEUTRONS

CARBON ISOTOPE HOW MANY PROTONS, ELECTRONS AND NEUTRONS

HOW MANY PROTONS, ELECTRONS NEUTRONS

COMPARE THE TWO CARBONS 1. HOW DOES THE MASS COMPARE 2. HOW DO THE PROTONS COMPARE 3. HOW DO THE NEUTRONS COMPARE

BORON PROTONS= ELECTRONS= NEUTRONS= ATOMIC NUMBER= ATOMIC MASS =

DEMOCRITUS 440 B.C DEVELOPED THE FIRST ATOMIC THEORY

DALTON THEORY 1802 ATOMS CANNOT BE BROKEN INTO SMALLER PIECES IN ANY ELEMENT, ATOMS ARE EXACTLY ALIKE

ATOMS OF TWO OR MORE ELEMENTS CAN COMBINE TO FORM COMPOUNDS ATOMS OF EACH ELEMENT HAVE A UNIQUE MASS MASSES OF THE ELEMENTS IN A COMPOUNDS ARE ALWAYS CONSTANT RATIO