Structure of an Atom. What Is an Atom? Atoms are often referred to as the building blocks of matter. Each element on the periodic table is composed of.

Slides:

Advertisements

Similar presentations

Atoms Chapter 2, Section 1.

Advertisements

Structure of an Atom.

Bellringer Write down 5 things you know about atoms.

Inside an Atom.

Atoms Matter Lecture #2. I. Structure of the Atom A. There are 3 main parts the the atom (subatomic particles) 1. Proton (+): has a positive charge and.

Structure of an Atom.

Structure of an Atom. What Is an Atom? An atom is often referred to as the building block of matter. Atoms have a nucleus surrounded by an electron cloud.

The Periodic Table & Electron Energy Levels

The Periodic Table. Define the following terms. 1. proton 2. neutron 3. electron 4. nucleus.

Atomic Structure.

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

Components of the Atom Nucleus: Nuclear Forces:

Solutes, Solvents, Solutions, and Atoms

Matter and Energy Basics October 6, 2015October 6, 2015October 6, 2015.

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

Atomic Structure Chm Matter MixturesPure Substances.

Structure of an Atom.

ATOMS Basic building blocks of all matter.

Elements!. Elements ► A pure element is made of many of the same atoms. ► Common elements- Aluminum, Oxygen, Carbon (about 100 others) ► Elements cannot.

Aim: What is an atom? Do Now: Take a sheet from the front desk.

I. What is an atom?  Atoms are the basic unit of matter  All matter is made up of tiny atoms.

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

1. An electron has a __________ charge. Negative.

ATOMS REVIEW 2014 December Benchmark. AN ATOM IS CONSIDERED TO BE NEUTRAL IF IT HAS EQUAL PARTS OF ______________ AND _________________. An atom is considered.

ATOMIC STRUCTURE Notes are for your personal use. Abbreviate as you see fit.

Structure of an Atom. What Is an Atom? An atom is often referred to as the building blocks of matter subatomic proton neutronelectron Atoms are composed.

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

Chapter 2: The Chemistry of Life

Aim: What is matter? I. Matter – anything that has mass and volume. A. Atoms - A unit of matter, the smallest unit of an element, having all the characteristics.

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)

ATOM NEUTRONS Charge: none Mass: 1 amu Location: nucleus ELECTRONS Charge: negative Mass: zero Location: electron cloud PROTONS Charge: positive Mass:

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

Aim: What is an atom? DO NOW: Identify X, Y, and Z as a mixture, compound or element. DRAW IMAGE.

Atoms and the Periodic Table L.E.Q. What is matter?

8 th Grade Physical Science Bohr Model & Lewis Dot Diagrams.

Periodic Table of Elements

The Chemistry of Life Atoms and Elements Chapter 6.

PROTON Proton: the positively charged particle found in the nucleus of an atom.

Drawing a Bohr-Rutherford Diagram. History Ernest Rutherford discovered that atoms contained a small dense positively charged nucleus surrounded by negatively.

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

Structure of an Atom.

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.

Parts of an Atom. First off, what is an atom? Atoms are the smallest parts to which an element can be divided yet still be that element. Atoms are the.

Intro to Atomic Structure

Atoms, Elements, & Compounds. Elements Element --- any substance that can’t be broken down into simpler substances. Example of an element --- Oxygen,

Notes: Matter Atoms, Periodic Table of Elements, Ions, and Isotopes.

All Need to Know About Atoms

CHAPTER 15 Introduction to Atoms

ATOMS NOTES Adapted from

Structure of an Atom.

Bell Ringer What is the smallest part of a living thing (You learned this last year)?

Atoms Atomic Structure.

Structure of an Atom.

Topic: Structure of an Atom

ATOMS NOTES Adapted from

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.

Structure of an Atom.

Chemistry Unit Two, Day One.

Topic: Structure of an Atom

Adapted from Harris Middle School: NEISD

Atom Notes Adapted from Harris Middle School: NEISD

Structure of an Atom.

Adapted from Harris Middle School: NEISD

Chemistry Do Now Directions: Take out a sheet of notebook (Do Now sheet) and set it up as instructed. Answer the following question. (5 minutes).

Structure of an Atom.

Topic: Structure of an Atom

Presentation transcript:

Structure of an Atom

What Is an Atom? Atoms are often referred to as the building blocks of matter. Each element on the periodic table is composed of one type of atom and cannot be broken down into a simpler substance.

What Is an Atom? Atoms are composed of smaller subatomic particles such as the proton, neutron, and electron. Atoms contain a nucleus surrounded by an electron cloud that consists of one or more energy levels.

Inner Structure of an Atom Nucleus - Small, dense, positively charged center of the atom which contains most of the atom’s mass

Inner Structure of an Atom The nucleus contains the following subatomic particles:  Protons - positively (+) charged particles  Neutrons - particles that have no charge (neutral), but contribute to the atom’s mass

Outer Structure of an Atom Electron cloud - an area around the nucleus where electrons are likely to be found orbiting the nucleus in several energy levels

Outer Structure of an Atom The electron cloud contains several energy levels  Electrons - negatively (-) charged particles located in specific energy levels surrounding the nucleus

Outer Structure of an Atom Multiple energy levels in the electron cloud completely surround the nucleus.  Electrons follow a specific order to fill the energy levels. Maximum of 2 electrons Nucleus Maximum of 8 electrons Maximum of 8 electrons* *Applies to the first 18 elements only

Outer Structure of an Atom The electrons in the outermost energy level are called valence electrons We will go into more detail about the importance of valence electrons in our next unit.

Decoding Atom Information from the Periodic Table C Carbon Atomic Number Atomic Mass

Decoding Atom Information from the Periodic Table Carbon 12.0 Atomic number # of protons = # of electrons Atomic mass = # of protons plus the # of neutrons 6 C

Atom Characteristics The number of protons in the nucleus is the atomic number of that atom. Protons are used to identify elements. The atomic number represents the number of protons (+) and is equal to the number of electrons (-).

Atom Characteristics The atomic mass is the mass of the protons plus the mass of the neutrons.  Atomic mass is recorded in the SI units: atomic mass units (amu).  Protons and neutrons each are given an amu of 1.  Electrons have a mass of nearly zero.

Atom Trivia There are 6 sextillion atoms in one drop of water. If you tried to count 6 sextillion, it would take you about one hundred trillion years…and that’s only if you count really fast. 1,000,000 atoms lined up side by side are less thick than just one sheet of tissue paper. In one-millionth of a second, electrons circle the nucleus of an atom billions of times.