The Mighty Electron.

Slides:



Advertisements
Similar presentations
What’s that again?? VOCAB Review time!
Advertisements

Chapter 1 Bingo Review Chemistry of Matter.
Atomic Structure Chapter 3.1. Subatomic Particles Proton +1 charge, found in the nucleus Neutron No charge, found in the nucleus Electron -1 charge, found.
Ch 7 Notes. Atoms ‘building blocks’ Element ‘one kind of atom’ Compounds ‘different kinds of atoms’ Shown w/ Symbols Shown w/ Formulas Molecule two or.
Valence Electrons & Bohr Diagrams
2.3. The periodic table and atomic theory Today we will analyze atoms, see how many protons they have, how many electrons, neutrons and so on….in science.
mmcl
The Bohr Model Valence Electrons
Atoms and the Periodic Table. Atoms are the basic building blocks of all matter. Atoms are the basic building blocks of all matter. Atoms are made up.
Ions and Ionic bonding Chemistry. What’s in an atom? (review and new Info) Atoms are made up of 3 particles: 1.Protons -Located in the nucleus (center.
Bohr Models, Valence and the Octet Rule
Ionic and Covalent Bonding. » Atoms bond when their valence electrons interact ˃Atoms with full outermost energy levels are not reactive (Noble Gases)
Atomic Structure.
What is oxidation number? What do those little +1, +2, -1, -2, etc. numbers mean?
Modified from John Bergmann and Jeff Christopherson.
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.
Opener: What is an ion? How does a ion form? mic/ionicact.shtml.
ELECTRONS!!! Parts of an atom. Electrons Negative charge Located outside the nucleus in an electron cloud They are organized into shells Move very quickly.
Matter- anything that has mass and occupies space Atom- basic unit of matter Subatomic particles: Protons (+) –in nucleus, 1 amu Neutrons (0) –in nucleus,
The Atom.
Lecture 31 Ion Formation Ozgur Unal 1.  Calcium carbonate – CaCO3 2  Table salt – NaCl  Aluminum oxide – Al2O3.
Electrons Valence Electrons Bohr Models Lewis Dot Structures.
Drawing Atoms. Draw a Bohr model of an atom Describe the meaning of the energy level number Key Words Bohr model energy level valence electrons.
AIM: How to write Lewis Dot Structures (Electron Dot Structures) DO NOW : 1. WRITE THE ELECTRON CONFIGURATION FOR THE PHOSPHORUS ATOM IN THE GROUND STATE.
Chemistry Review Do you remember anything from science investigations?
Topic: Bohr Model Date: 11/19/2012
Atomic Theory.
Electron Arrangement. Electrons are arranged in energy levels around the nucleus Electrons are arranged in energy levels around the nucleus Each energy.
Atomic Structure.
Ionic & Covalent Bonds.  A compound is a substance whose smallest unit is made up of atoms of more than one element bonded together.
Atoms and Bonding Chapter 10-1 We learned that atoms have a nucleus and an electron cloud. The nucleus contains the protons and the neutrons (p+, n neutral).
Interactions of Matter Text Chapter 1 Chemical Bonding.
What determines the properties of an atom or molecule? 6 th Grade Gifted Chapter 4 – Chemical Reactions.
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.
Valence Electrons & Diagraming Elements Chemical Bond A force of attraction that holds two atoms together Has a significant effect on chemical.
#9 Charge It Answers. 1) Why are Ne and Ar chemically stable? Because they have _____ valence electrons. 8 (full outer energy levels)
Ionic, Covalent, Metallic and Hydrogen Bonds Chemical Bonding.
Chemistry of Life Matter and Energy: What are we made of?
Valence electrons Valence electrons are those electrons that are lost or gained when elements combine.
SNC2D – Academic Science
Atomic Theory.
Electron Dot Diagrams.
Electron Configuration
Periodic Table & Ion Formation
Electrons in Atoms Unit
Putting Atoms Together
Modern Atomic Theory.
Ions and Ionic Bonding.
Bohr-Rutherford Diagram
Valence Electrons & Bohr Diagrams
Chapter 2 The Material World
Bonds.
Bell Ringer Water forms when hydrogen and oxygen atoms bond together. Most all element’s atoms can bond with other element’s atoms. However, atoms from.
Bohr and Lewis Diagrams
QOD p. 150 Vertical column *Share chemical properties group period
SNC2D – Academic Science
Review – Electron Energy Levels
Atoms, Bonding and Periodic Table Important Stuff to Know!!!!
#40 Octet, VE, and Lewis Dot Diagrams
Bohr Diagrams Rules and Directions.
Ions and Ionic Charge Ions are atoms that have an electrical charge (+/-) Unstable atoms will want to bond with other unstable atoms; have an electrical.
Get out your element flash cards and quiz your neighbor for 5 minutes.
Atomic Structure Protons- positively charged, found in nucleus
AIM: How to write Lewis Dot Structures (Electron Dot Structures)
Periodic Table How to Draw Bohr Diagrams
DRAWING BOHR MODELS.
Ions, Valences and Oxidation Numbers
Ions An atom with a positive or negative charge
Ions.
Valence Electrons & Bohr Diagrams
Presentation transcript:

The Mighty Electron

Electrons in Energy Levels exist in one or more energy levels surrounding the nucleus

Energy levels 1st energy level holds up to 2 e- 2nd energy level holds up to 8 e- 3rd energy level holds up to up to 18 e- Valence electrons- number of electrons in outer level- this determines the chemical reactivity of the element! -Elements in the same family have similar chemical reactivities bc they have the same # of valence e-

Valence Electrons Valence electrons are organized according to vertical groups/families in the Periodic Table 8 1 2 3 4 5 6 7

Bohr Atomic Model Shows the # of p+ and n0 in the nucleus and e- in energy levels Which element is shown?

Lewis Dot Structure Shows the number of valence (outer) electrons Na

Octet Rule (does not apply to 1st energy level) All elements are happy when they have 8 outer electrons (full outer shells) Ex. Aluminum (Al) has 13 protons, 14 neutrons and 13 electrons. There are 3 valence electrons in Al Al gives up those 3 electrons to be happy; this creates 10 electrons and 13 protons; Al has a +3 charge

Elements with 1, 2 or 3 outer electrons tend to “lose” or transfer their extra electrons to other elements when they bond together 8 1 2 3 4 5 6 7

Elements with 5, 6, or 7 outer electrons tend to gain electrons when they bond with other elements. 8 1 2 3 4 5 6 7

Elements with 4 valence electrons may gain or lose electrons when bonding 8 1 2 3 4 5 6 7

Ion Ion- an atom that has gained or lost electrons; has an overall charge Let’s look at Sodium (Na) 11p+ 11p+ 11e- loses 1 e- 10e- becomes an ion Na 1+

What ions do the following elements form? Be O F Rb Ar Be+2 O-2 F-1 Rb+1 None