The Periodic Table & Electron Energy Levels

Slides:

Advertisements

Similar presentations

Atoms, Elements, and the Periodic Table. PART 1: ATOMS 1.What are atoms made of? NUCLEUS – center of the atom PROTON (+) (in nucleus) NEUTRON (0) (in.

Advertisements

Structure of an Atom.

4.3: HOW ATOMS DIFFER ATOMIC NUMBER

Bohr Model & Lewis Dot Diagrams

Drawing Bohr Models.

Catalyst: Find the atomic #, mass #, # protons, # electrons, and # neutrons for the following elements: Beryllium & Lithium.

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.

Atomic Mass & Number Isotopes The Periodic Table.

 1. It helps to have identified the number of protons, neutrons & electrons an atom has before you try to draw it. You can find this by using this by.

Bohr model Energy level (shell) Valence electrons

Aim: How is the Periodic Table of the Elements arranged? The elements on the Periodic Table are arranged in order of increasing atomic number. The number.

Atomic Number ● Symbol ● Atomic Weight Element ● Compound ● Mixture.

Bohr Models and Lewis Dot Structures. Recall that electrons are NOT in the nucleus of the atom! A VERY simple way to think about the positions of atoms.

Structure of an Atom.

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.

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

Building Atoms. The Periodic Table Will Help You! The PTE is an arrangement of the elements into groups that have similar properties. The horizontal rows.

Both are valuable in a different way! Bohr Model & Lewis Dot Diagrams.

Created by G.Baker Atom Models There are two models of the atoms we will be using in class. Bohr Model Lewis Dot Structure Created.

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.

SECTION 4: VALENCE ELECTRONS CHAPTER 9: ELECTRONS IN ATOMS AND THE PERIODIC TABLE.

– a unit of matter; the smallest unit of a chemical element.

Atomic Structure BASIC INFORMATION.

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

ELECTRONS!!! Parts of an atom. Electrons Negative charge Located outside the nucleus in an electron cloud They are organized into shells Move very quickly.

Electron Basics Atom Review  Protons and neutrons are bound together to make the atomic nucleus  Protons have a positive electrical charge  Neutrons.

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

 Protons and neutrons are bound together to make the atomic nucleus  Protons have a positive electrical charge  Neutrons are neutral and have no.

Notes : The Bohr Model & Happy Atoms/Ions. What atom (element) do you think this is? How can you tell?

Vocabulary ATOM-the smallest unit that maintains the characteristics of an element – Nucleus- The center of the atom, contains protons and neutrons –

Periodic Table Basics “Your cheat sheet”.

Bohr Model & Lewis Dot Diagrams

Bohr Diagrams or Shell Models

Structure of an Atom.

Bohr-Rutherford Diagrams for Neutral Atoms

REVIEW. Bohr Model Drawings Identify the number of Protons, Neutrons, and Electrons in an element. (PEN) Write the number of Protons and Neutrons in the.

Electron Configurations 03/28/12. N. Bohr 1913 Electrons travel in definite paths. Electrons jump between levels from path to path. Bohr Model of the.

Electrons & their arrangement in an atom. Electrons live in something called energy levels. Only so many electrons can be in any energy level. The electrons.

4.3 Modern Atomic Theory Find the atomic #, mass #, # protons, # electrons, and # neutrons for Beryllium & Lithium.

Energy Levels and Valence Electrons

Bohr Model & Lewis Dot Diagrams

ATOMS NOTES Adapted from

Modern Atomic Theory.

Structure of an Atom.

Atomic Structure Test Review

Bohr Models and How to Draw Them

Structure of an Atom.

Name That Atom! Use your knowledge of atoms to find the name of each of the following atoms. Use a Periodic Table!

ATOMS NOTES Adapted from

Topic: Element Identity and Reactivity

Bohr Model & Lewis Dot Diagrams

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.

Follow along and fill in the missing information on your sheet.

Atomic Structure The Bohr Model.

Periodic Table Basics.

Atom, Bohr-Rutherford, and the Periodic Table

Structure of an Atom.

Electrons in outermost shell Bohr model or group number

Lewis Dot Diagrams N.

DRAWING BOHR MODELS.

Structure of an Atom.

DAILY QUESTION October 1, 2008

Structure of an Atom.

Presentation transcript:

The Periodic Table & Electron Energy Levels

Energy Levels Electrons surround the nucleus of an atom in regions called energy levels.

Periods on the Periodic Table Each period has a new electron energy level Period 1 = 1 energy level Period 2 = 2 energy levels Period 3 = 3 energy levels

Atom models When drawing an atom, the nucleus (made of protons and neutrons) is in the center. Each energy level (filled with electrons) is a new circle around the nucleus. How many electrons are in this atom? Can you name the element? 6 electrons, means it has 6 protons It is Carbon (atomic number 6)

Valence electrons - the number of electrons in the outermost shell How many valence electrons are in Si? 4 How many valence electrons are in Ge? 4 Si Ge

Each group has the same number of. electrons in the outermost energy Each group has the same number of electrons in the outermost energy level. (valence electrons)

Valence electrons of elements on the periodic table http://www.youtube.com/watch?v=7mLPC74GHMo

Summary of the Table’s arrangement Elements are arranged by increasing atomic number Elements in the same period have the same number of electron energy levels Elements in the same group the same number of valence electrons Valence electrons are the electrons found in the outermost energy level.

Can you predict the electron arrangement just by looking at the element’s position on the table?