Molecules & Covalent Bonding. Recall Bonding between two atoms can either refer to the transfer or sharing of electrons. In an ionic bond, the electrons.

Slides:

Advertisements

Similar presentations

Unit 6 Covalent Bonding.

Advertisements

Aim: How to distinguish between ionic and covalent bonding? Two major categories of compounds are ionic and molecular (covalent) compounds. Metals tend.

Nomenclature Continued Chapter 6 Sections 5 and 6.

Table of Contents Lecture/Lab/Activity Date Pg# 22. The Periodic Table9/24/ Periodic Def & Trends9/27/ Electron config practice10/4/10.

Naming Compounds.

Covalent Compounds, Formulas and Naming. Covalent Compounds Covalent compounds are compounds formed from 2 or more nonmetals. Examples: H 2 0 (water)

Naming Covalent Compounds Covalent compounds consist of Two non-metals.

Prefixes for Naming Covalent Bonds. Prefixes Mono - 1 Di - 2 Tri - 3 Tetra - 4 Penta - 5 Hexa - 6 Hepta - 7 Octa - 8 Nona - 9 Deca - 10.

Naming Covalent Bonds.  Write the names of both elements.  Change the final ending to -ide.  Add prefixes to indicate subscripts.  Only use mono-

Molecular Compounds (a.k.a. Covalent Compounds)

Binary Molecular Compounds

Ch Chemical Bonds III. Naming Molecular Compounds  Molecular Names  Molecular Formulas.

Chapter Naming & Formula Writing for Molecular Compounds.

Naming Binary Molecular Compounds. Did you ever wonder… …what the chemicals in some of your household supplies are? This contains Boron trifluoride What.

Covalent Bonding.  Atoms that share a pair of electrons are joined together by a covalent bond.  A neutral particle that is composed of atoms joined.

Forming Molecular Bonds.  What is a covalent bond?  The chemical bond that results from the sharing of electrons  Non-metals combine to acquire a full.

Covalent Bonding (Molecular Compounds) I. Characteristics of Molecular Compounds A. Compounds result from the sharing of electrons B. Lower melting points,

Covalent Bonding.  Atoms share electrons  Occurs between two non-metals.

Covalent Bonding. Ionic Bonding Remember that in an ionic bond, electrons are __________ between atoms. transferred This transfer creates _____; both.

Covalent Bonds Chapter 5 Section 3. Covalent Bonds Remember…covalent bonds form between two nonmetals The bonds form when electrons are shared between.

Covalent compounds Sharing of electrons. Chemical Bonds Ionic Bond – Transfer of electron – Exist in a crystal lattice form Covalent Bond – Pairs of electrons.

Molecular Compounds (a.k.a. Covalent Compounds). Ionic Compounds Review Ionic compounds are the combination of ions. E.g. Na+ + Cl-  NaCl. This formula.

Chemistry 10/21/11. Brainteaser 10/24/11 Name these ionic compounds: –NH 4 Br –Fe(SO 4 ) Write the correct formula of these ionic compounds –Manganese.

Chemistry 10/21/11. Brainteaser Name these ionic compounds: –Fe 2 S 3 –Ca(OH) 2 –MnCrO 4 Write the correct formula of these compounds –Zinc sulfate –Magnesium.

Electrons are shared between 2 or more nonmetal atoms. Can also be between a nonmetal and a metalloid. Ex: H 2 O, CO 2, C 6 H 12 O 6 EN value less than.

How Do We Make Compounds?

Type III Binary Compounds

Drawing Lewis Dot Structures Covalent compounds 1. Figure valence e- for each atom 2. Draw Lewis Dot Structure 3. Combine atom so each has 8 e- exception.

Day 14 – Covalent bonds Sci 10Chemistry. Covalent Bonds Non-metal + non-metal.

Covalent Bonding How atoms share electrons. Very simple covalent bonds Two atoms share electrons to get a valence “Octet” Cl - Cl.

Molecular Compounds Held together by Covalent bonds. –Between two or more non-metal elements. –Sharing of electrons –Name using prefixes. Subscripts after.

CHEMICAL BONDS Atoms must have a complete outer energy level to be stable Most atoms of elements: 1.are not stable 2.will need to gain, lose, or share.

Naming Compounds Unit 2 Chemistry. Covalent Nomenclature What is a covalent bond????

MOLECULAR COMPOUNDS Ms. Martino’s SNC2P. Molecular Compounds Molecular compounds are formed when two _______________ electrons in a _______ bond. Example:

CHEMISTRY PART 11 Covalent Compounds. Remember...  Metals want to lose electrons and non-metals want to gain them.  These are ionic bonds.

II. Molecular Compounds. Covalent Bonding A major type of atomic bonding occurs when atoms share electrons.atoms As opposed to ionic bonding in which.

Chapter 8.5 Polarity. Polarity is the separation of electric charge that leads to a bond or molecule having a positive and negative end –An unequal pull.

In this chapter you will learn about compounds and their names and formulas.

MOLECULAR COMPOUNDS. Bonding Atoms combine with each other in two general ways: 1. Ionic Compounds: transfer of electrons from one atom to another June.

Nomenclature Naming compounds. Ionic Compounds Cation (metal): The name of the element stays the same Anion (non-metal): Change the ending of the element.

Naming Covalent Compounds Covalent compounds consist of Two non-metals.

Binary Molecular Compounds Nonmetal + Nonmetal. Binary Compounds Containing Two Nonmetals To name these compounds, give the name of the less electronegative.

Molecular Compounds.

Binary Molecular Compounds

Chemical Bonding Chemical Bonding

Unit 6: Covalent Bonding

Molecules EQ: How are the electrons arranged in a covalent bond?

Molecules and covalent compounds

II. Molecular Compounds

Molecules and covalent compounds

Naming Molecular Compounds

Molecular Compounds and Nomenclature

Molecular Nomenclature

II. Molecular Compounds (p. 164 – 172, 211 – 213)

Covalent Nomenclature

4.2 Names and Formulas of Compounds

Covalent Bonding.

Wednesday, November 12, 2014 Objective: Students will be able to write the formula for Type III Compounds. Warm-Up: Identify the following compounds as.

BELLWORK 12/07/15 Draw the Lewis Structure for NH3 using lines for the shared electron pairs. Draw the Lewis Structure for CO2 Draw the Lewis Structure.

II. Molecular Compounds

Chapter 2 The Material World

BELLWORK 12/8/16 On your worksheet, complete the Covalent Compounds Wksht (Page 2)

Chemical Bonding.

Molecular Compounds and Nomenclature

Matter & Bonding Lesson # 3

Chapter 6 Chemical bonding.

Chemistry Lesson # 4 Molecular Compounds.

Bonding & Molecular Structure

COVALENT COMPOUNDS.

Presentation transcript:

Molecules & Covalent Bonding

Recall Bonding between two atoms can either refer to the transfer or sharing of electrons. In an ionic bond, the electrons transfer from the metal to the non-metal. Today we will look at the sharing of electrons: covalent bonding.

Molecular Compounds A molecule is a combination of two or more atoms held together by covalent bonds. Occurs between two or more non-metal atoms. The shared electrons belong to both atoms creating a full valence shell. The force of attraction for these mutual electrons holds the atoms together.

Nomenclature Naming molecular compounds is done in three steps: 1. Write the left-most atom first 2. Change the suffix of the right-most atom to “-ide”. 3. Apply appropriate prefixes where necessary.

Common Prefixes Prefix # of atoms Mono-1 Di-2 Tri-3 Tetra-4 Penta-5 Hexa-6 Hepta-7 Octa-8 Nona-9 Deca-10 *Note: Mono is only used for the second atom in the compound.

Example #1 For the molecular compounds formed by the atoms below i. Draw the Lewis diagrams of the resulting molecule ii. Write the chemical formula iii. Write the chemical name a) H & F HF H F HF Covalent Bond (shared electron pair) ii) HF iii) Hydrogen monofluoride i) b) O & O OO OO OO ii) O 2 iii) Dioxide Note: An example of a diatomic molecule.

c) C & Cl CCl C ii) CCl 4 iii) Carbon tetrachloride

Example #2 Determine the chemical formula for the following molecular compounds. a) Dihydrogen Monoxide b) Carbon Dioxide c) Dicarbon Hexahydride H2OH2OCO 2 C2H6C2H6

Example #3 Determine the chemical name for the following molecular compounds. a) CBr 4 b) S 2 O 5 c) C 3 H 8 Carbon tetrabromide Disulphur pentoxide Tricarbon octahydride

Building Molecular Models On a separate sheet of paper, create the following chart (1 whole page). AtomsSketch Formula & Name Lewis Diagrams H & H O & O C & four H O & two H H & Cl N & three H

Homework P.212 #1-3 Naming Molecular Compounds (web-site)