Valence Electrons I. Def- Electrons that are found in the outermost energy level or orbital. A. These are the electrons that are involved in chemical bonding.

Slides:



Advertisements
Similar presentations
Periodicity Objectives:
Advertisements

The Periodic Table.
Periodic Trends & the Periodic Table. Periodic Table Periodic Table – arrangement of elements in order of increasing _atomic number_ with elements having.
Aim: How are Elements Organized in the Periodic Table? DO Now: 1. How would you organize these buttons? 2. How do you think elements are organized in the.
The Periodic Table. Atomic Structure Nucleus- center of an atom -contains protons - which are positive -contains neutrons- which are neutral Electrons.
5.4 Trends In the periodic Table (Page )
The Periodic Table of Elements. What are atoms?  Atoms are composed of protons, electrons, and neutrons. The number of protons in the nucleus of an atom.
Grade 9 Science Unit 1: Atoms, Elements, and Compounds
Chapter 3 – The Periodic Table
The Periodic Table of Elements
The Structure of an Atom
The Periodic Table.
Periodic Table of the Elements
Chemical Periodicity.
Lecture Periodic Table. Tom Lehrer periodic table song: Tell me something you did not know about the periodic.
Periodic Table Of Elements. Understand the organization of the periodic table. Identify properties of metals and non-metals KEY WORDS Periodic tableFamilyPeriod.
The Periodic Table. Basics Each element on the Periodic Table has a unique atomic structure Each element has a symbol that is used as a shorthand way.
Periodic Trends. Periodic Table of the Elements What does the staircase line separate?
The Periodic Table of Elements 8 th Grade Science Ms. Kindregan.
The Structure of an Atom & The Periodic Table. “The Atom” I. Atom- The building blocks of matter. A. Atoms have three parts: 1. Protons (Positive Charge)
What determines an element’s chemistry. When atoms combine they form compounds. Electrons of an atom are found in different energy levels. Valence electrons.
Unit 2: Periodicity & the Periodic Table. I. History A.Dmitri Mendeleev – first person to organize elements based on atomic mass left gaps for elements.
Use the Periodic Table to complete the table: Electron Config. Symbol Column Row 1s 2 2s 2 2p 6 3s 1 1s 2 2s 2 2p 6 3s 2 1s 2 2s 2 2p 1 1s 2 2s 2 2p 6.
Chemical Bonding Science Investigations. What is a chemical bond? Electrical attraction between the nucleus of one atom and the valence electrons of another.
Periodic Trends. Periodic Table of the Elements What does the staircase line separate?
Everything that is underlined should get filled in on your notes!
Groups of the Periodic Table. Valence Electrons  The electrons in the OUTERMOST energy level of the atom. These are the electrons furthest from the nucleus.
Warm Up 9/22/ Identify the name and charge of the 3 subatomic particles. - How is atomic mass calculated? - How is atomic number calculated? For.
Week 12 Quiz Prep Sheet Know the location of the following: Transition metals, metalloids, Metals, Non-metals, alkali metals, alkaline earth metals, halogens,
Periodic Table ReviewPeriodic Table Review. The periodic table is a tool for organizing the elements. A row of elements is called a period. A column of.
The Periodic Table (The world’s greatest cheat sheet)
Electrons are located in an area around the nucleus called the electron cloud. The electron cloud is made up of different energy levels. The electrons.
The Periodic Table Chapter 19. Properties of Metals  Metals are found left of the stair-step line  Metals are usually:  Good conductors of heat and.
The Periodic Table Review. Organization Period- Rows –left to right Group or families- Top to bottom.
Introduction to Chemistry Chemistry is the study of matter. Matter is anything that takes up space and has mass. All matter is made up of small particles.
ORGANIZING THE ELEMENTS Periodic Table. History 1700’s Lavoisier compiled a list of known elements Dobereiner published classification system. Grouped.
Chemical Bonding Science Investigations. What is a chemical bond? Electrical attraction between the nucleus of one atom and the valence electrons of another.
Unit 7 Changes in matter Chapter 19 Molecules and compounds.
The Periodic Table (The world’s greatest cheat sheet)
Science 9 Periodic Table Review
Aim: How are Elements Organized in the Periodic Table?
Metals, Nonmetals, and Metalloids:
The Periodic Table.
Metals, Nonmetals, and Metalloids:
The Periodic Table of the Elements
Review & Introduction for Science 10
Unit 1 STRUCTURE OF MATTER.
3.5 Types of Elements and the Groups of the Periodic Table
Periodicity Announcement: Test next Thursday (B)/Friday (G)
Periodic table Chapter 6.
3.2 Types of Elements and the Groups of the Periodic Table
The Periodic Table Chapter 4.
Periodic Table Chemistry 2013.
Coloring the Periodic Table Families
Periodic Trends Electronegativity increases from the left to the right, and from the bottom to the top Atomic radius increases from the right to left,
Periodic Table Of Elements.
History of the Periodic Table
The Periodic Table.
Periodic Table and Atom Structure
Unit 3 Atomic structure.
3.2 Types of Elements and the Groups of the Periodic Table
The Periodic Table (The world’s greatest cheat sheet)
Non-Metals: To the right of the staircase
The Periodic Table Objectives
Bell Ringer Continue working on Chapter 5 Vocabulary in your notebook. (p. 178)
Periodic Table Notes #1 You need YOUR periodic table and the blank one. WCHS Chemistry.
“The Ultimate Cheat Sheet”
The Periodic Table (The world’s greatest cheat sheet)
Periodic Table: Periods: Are the horizontal rows on the
Warm-up 1. grab an orange periodic table from the back of the room.
Presentation transcript:

Valence Electrons I. Def- Electrons that are found in the outermost energy level or orbital. A. These are the electrons that are involved in chemical bonding and help atoms achieve stability. I. Determining the # of Valence Electrons A. S & P Block (main block elements)- 1. Group 1- 1 valence electron 2. Group 2- 2 valence electrons

3. Group 13- take group #- 10= 3 valence electrons 4. Group 14- take group #-10= 4 valence electrons 5. Group 15, 16, 17, 18, etc. III. ALL ATOMS WANT TO HAVE 8 VALENCE ELECTRONS!!! A. Octet Rule- states that all atoms strive to have 8 valence electrons in their outermost energy level in order to achieve a stable arrangement. Ex. How many v. electrons does Calcium have? What element would it bond with to achieve stability?

The Periodic Table I. 3 main groups A. Metals- found on the left of the staircase 1. Good conductors of heat and electricity B. Non-metals- found on the right of the staircase 1. Poor conductors of heat and electricity C. Metalloids- found along the staircase 1. Possess properties of BOTH metals and non- metals.

II. Specific Group Names A. Group 1- Alkali Metals 1. MOST reactive group of metals. (due to having only 1 valence electron). B. Group 2- Alkaline Earth Metals C. Groups Transition Elements D. Group 17- Halogens 1. MOST reactive group of non-metals (due to having 7 valence electrons) E. Group 18- Noble Gases 1. Most stable group on the periodic table (due to already full octet )

Average Atomic Mass of an Element 1. If percentages are given, convert to decimals. 2. Multiply the decimals by the mass of the isotope. 3. Add the masses together to get the average atomic mass for each element. Ex. 1.