Electrical Conductivity and Models of Bonding

Slides:

Advertisements

Similar presentations

Electrolytes & Nonelectrolytes. Electricity can flow only when there are free moving charged particles present! In a solid, the free moving charged particles.

Advertisements

mmcl

Ionic Bonding Structure and properties of ionic substances.

1 Chapter 4 Aqueous solutions Types of reactions.

The structure of ionic compounds There are many ionic bonds (electrostatic forces) in an ionic compound such as sodium chloride, arranged in giant lattice.

 Define these words  Ion  Ionic bond  Ionic compound  Chemical formula  Subscript  Covalent bond.

Inorganic Chemistry – Chemical Bonding. Chemical Bonding (1). When two or more atoms react ---  chemical bond – Valence electrons – Form Ionic bonds.

Aqueous Solutions. Solution Homogeneous mixture Solute – substance be dissolved Solvent- substance solute is dissolved in.

Aqueous Solutions Water containing dissolved substances are aqueous solutions. The dissolving medium is the solvent. The dissolved particles are the solute.

Ionic vs Covalent Compounds

Nature of Matter. Atom smallest unit of matter that cannot be broken down by chemical means.

Dissolving vs. Dissociating Sugar vs. Salt.

Section 7.2. Forming Ionic Compounds Since ions have charges, ions with opposite charges will be attracted to each other. The force that pulls them together.

Covalent Compounds Sharing is Caring Summary of ionic compounds 1. Electrically neutral –The net charge of the compound is zero 2. Formed from Cation(s)

Conductivity Lab.

2.3 Classifying Chemical Compounds: Properties of Ionic and Covalent Compounds Unit: Matter and Chemical Bonding.

Properties of Ionic and Covalent Compounds

 Water covers about ¾ of the earth  Living cells are 70% -95% water  In nature water exists in 3 physical states of matter: ◦ Solid, liquid, gas 

Get a Charge Out of Matter Jeopardy MatterVocabularyBonds Miss Alanious

Particles in Solution & Dissolving w/o Water 21.3 & 21.4.

BONDING. WHY ATOMS COMBINE -1 All atoms want a full outer shell Some atoms will lose electrons to empty their shells These become positively charged ions.

PART II: Solvation and Polarity. 2 What actually happens in a solution? Solvation: the process of dissolving NOT a chemical Rxn The reasons why a solute.

Summary of ionic compounds 1. Electrically neutral –The net charge of the compound is zero 2. Formed from Cation(s) & Anion(s) –Electrons are given away.

Apply electronegativity values and the position of two elements on the periodic table to determine the type of dominant bonding that occurs; ionic, polar.

Ionic substances C2.1/2 10-Jul-11. Metal + Non-metal Metal atoms Non-metal atoms + ions– ions electrons Ionic compound Atoms get full outer shells.

Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding Copyright © Houghton Mifflin Harcourt Publishing Company.

Bonding – Learning Outcomes

Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding

Solutes: Electrolytes and Non-electrolytes

Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding

Section 2: Ionic Bonds and Ionic Compounds

Macromolecular / giant covalent Molecular / simple covalent

Chemical Bonds Types of Bonds

Particles in Solution.

Bonds NonMusical Chairs Review

Calderglen High School

The way things are joined together

Unit 3 Lesson 4 Ionic, Covalent, and Metallic Bonding

Don Showalter world of chem salt vs sugar

Water and the solution process

In a solution, the dissolving medium is the _____________.

Example diagram and detailed description of bonding in substance

Explaining the Physical Properties of Ionic Substances

II. Kinds of Chemical Bonds (p )

Structure and Properties of Ionic and Covalent Compounds

Chemistry of Life Properties of Water.

Unit 3 Bonding & Chemical Rxns

PARTICLES THAT SUBSTANCES ARE MADE OF

How Elements Form Compounds

Bonding Knowledge Organiser

Chemistry of Life Properties of Water.

1. IONIC COMPOUNDS INVOLVES A TRANSFER OF ELECTRONS

Chapter 20 Section 2: Types of Bonds

7.2 Objectives Describe the formation of ionic bonds and the structure of ionic compounds. Generalize about the strength of ionic bonds based on the physical.

Calderglen High School

Properties of Ionic and Covalent Compounds (+ Metallic)

Bonding Bonding.

II. Kinds of Chemical Bonds Ionic Bond Covalent Bond Comparison Chart

10T2K© Atoms and bonds.

Formation of Ionic Bonds

Solubility: Dissolution: is the process of a particle (solid) become incorporated into a liquid so as to form a solution. When you put a teaspoon of salt.

II. Kinds of Chemical Bonds Ionic Bond Covalent Bond Comparison Chart

Aim: How to determine if an Ionic Solid Dissolves in Water

Which type of bonding is it?

ionic, covalent, and metallic

Presentation transcript:

Electrical Conductivity and Models of Bonding Electric current – Flow of Charge (+ or – ions or electrons). Link to Battery animation MOVING ELECTRONS MOVING IONS

Conductivity of metals – Moving electrons carry charge

nonElectrolyte, weak electrolyte, strong electrolyte solutions

COVALENTLY BONDED SUBSTANCES DON’T FORM IONS WHEN DISSOLVED IN WATER NOTE: ONLY NEUTRAL MOLECULES PRESENT; NO FULLY CHARGED PARTICLES NEUTRAL ETHANOL DISSOLVED IN WATER NEUTRAL SUGAR MOLECULES DISSOLVED IN WATER

Solid salt – ionic lattice IoNS LOCKED INTO POSITION BY MULTIPLE ELECTROSTATIC ATTRACTION EACH ION IS BONDED TO 6 IONS OF THE OPPOSITE CHARGE

Molten sodium chloride is an excellent conductor Moving ions free to move past each other

IONIC COMPOUNDS SEPARATE INTO IONS IN SOLUTION WATER IS POLAR; IT HAS A PARTIALLY NEGATIVE OXYGEN SIDE AND PARTIALLY POSITIVE HYDROGEN SIDES THAT WILL ATTRACT IONS OUT OF THE LATTICE LINK TO SALT DISSOLVING ANIMATION

Conductivity of ionic compounds

CONDUCTIVITY OF IONIC COMPOUNDS

Don Showalter world of chem salt vs sugar Link to video salt vs sugar Electric pickle