Covalent bond

Principles of Chemistry Chapter 7

Subject:

Chemistry

Rating:

No votes yet

Tags:

Orbital hybridisation

Pi bond

Valence

Chemistry

Chapter 7: Chemical Bonding Section 7.3: The Covalent Bond Wednesday, October 1, 2014 1:55 PM Covalent bonds - attractive force resulting from the sharing of electrons between pairs of atoms ? Chemical Bonds and Energy ? Driving force between all bond formation is lowering overall energy (NOTE: attractive interactions lower potential energy) ? Typically in interactions between nonmetals! ? -point of minimum energy in a system = formation of covalent bond Bond energy - energy released when isolated atoms form a covalent bond Bond length - distance between the nuclei of bonded atoms ? Formation of a chemical bond always releases energy Bond strength is determined by the amount of energy released in the formation of that bond (more released energy means stronger bond) ?

Organic Chapter 2 ppt

Subject:

Chemistry

Rating:

No votes yet

Tags:

Orbital hybridisation

Pi bond

Chapter 2 Structure and Properties of Organic Molecules Organic Chemistry, 6th Edition L. G. Wade, Jr. Chapter 2 * Sigma Bonding Electron density lies between the nuclei. A bond may be formed by s-s, p-p, s-p, or hybridized orbital overlaps. => Chapter 2 Chapter 2 * Pi Bonding Pi bonds form after sigma bonds. Sideways overlap of parallel p orbitals. => Chapter 2 Chapter 2 * Multiple Bonds A double bond (2 pairs of shared electrons) consists of a sigma bond and a pi bond. A triple bond (3 pairs of shared electrons) consists of a sigma bond and two pi bonds. => Chapter 2 Chapter 2 * Molecular Shapes Bond angles cannot be explained with simple s and p orbitals. Use VSEPR theory.

AP Biology Basic Chemistry

Subject:

Biology

Rating:

No votes yet

Tags:

Physics

ion

Resch/Stuart AP Biology Basic Chemistry Basic Chemistry Review Directions: Since this will be handed in digitally, please type all response in bold directly below the question. ?Once you are done, please submit this document via google drive. ?Remember that this is due by Aug. 18th. Review: J.J. Thomson?s Plum Pudding model and ionic vs. molecular bonding

AP BIO Chapter 02

Subject:

Biology

Rating:

No votes yet

Tags:

Orbital hybridisation

Proton

Campbell's Biology, 9e (Reece et al.) Chapter 2 The Chemical Context of Life This chapter presents basic chemical principles for understanding the chemical context of living organisms, from atomic structure to the nature of chemical bonds and an introduction to chemical equilibrium. These questions focus on elements most important to life or the study of life, including the elements that comprise organic molecules and important trace elements. Some isotopes are important in geologic dating and in biological tracer studies. How elements participate in forming different types of chemical bonds is essential to mastering subsequent topics on the behavior and properties of biological molecules, structures, and energy metabolism. Multiple-Choice Questions

AP BIO CHP 2 CAMPBELL BIOLOGY 9e

Subject:

Biology

Rating:

No votes yet

Campbell's Biology, 9e (Reece et al.) Chapter 2 The Chemical Context of Life This chapter presents basic chemical principles for understanding the chemical context of living organisms, from atomic structure to the nature of chemical bonds and an introduction to chemical equilibrium. These questions focus on elements most important to life or the study of life, including the elements that comprise organic molecules and important trace elements. Some isotopes are important in geologic dating and in biological tracer studies. How elements participate in forming different types of chemical bonds is essential to mastering subsequent topics on the behavior and properties of biological molecules, structures, and energy metabolism. Multiple-Choice Questions

Chapter 9

Subject:

Chemistry

Rating:

No votes yet

Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 15 Nov. 2012 Jespersen, Brady, Hyslop Chapter 9 Chemical Bonding: General Concepts Ionic Bonds Ch. 9.2 Ionic bonds are the attraction between positive and negative ions in an ionic compound. e.g. NaCl An electron is transferred from the metal (Na) to the nonmetal (Cl): Ionic compounds form when metals and nonmetals react and they are held together by ionic bonds. Compounds (ionic and molecular) are formed due to a decrease (lowering) of the potential energy of system. Net energy change associated with the electron transfer reaction. So, why does NaCl (s) form at all? 2 Lattice Energy of Ionic Compounds Ch. 9.2 The energy needed to produce separated gaseous ions from one mole of the solid is the lattice energy:

Campbell AP Bio Study Guide Chapter 2

Subject:

Biology

Rating:

No votes yet

Campbell's Biology, 9e (Reece et al.) Chapter 2 The Chemical Context of Life This chapter presents basic chemical principles for understanding the chemical context of living organisms, from atomic structure to the nature of chemical bonds and an introduction to chemical equilibrium. These questions focus on elements most important to life or the study of life, including the elements that comprise organic molecules and important trace elements. Some isotopes are important in geologic dating and in biological tracer studies. How elements participate in forming different types of chemical bonds is essential to mastering subsequent topics on the behavior and properties of biological molecules, structures, and energy metabolism. Multiple-Choice Questions

campbell_ap_bio_practice_test_ch2

Subject:

Biology

Rating:

No votes yet

Tags:

Physics

Valence

Atom

Chemical reaction

Proton

ion

Covalent bond

Technology

Chapter?2 The?Chemical?Context?of?Life Multiple-Choice?Questions 1) About?25?of?the?92?natural?elements?are?known?to?be?essential?to?life.?Which?four?of?these?25?elements?make?up approximately?96%?of?living?matter? A) carbon,?sodium,?chlorine,?nitrogen B) carbon,?sulfur,?phosphorus,?hydrogen C) oxygen,?hydrogen,?calcium,?sodium D) carbon,?hydrogen,?nitrogen,?oxygen E) carbon,?oxygen,?sulfur,?calcium Answer: D Topic: Concept?2.1 Skill: Knowledge/Comprehension 2) Trace?elements?are?those?required?by?an?organism?in?only?minute?quantities.?Which?of?the?following?is?a?trace element?that?is?required?by?humans?and?other?vertebrates? A) nitrogen B) calcium C) iodine D) sodium E) phosphorus Answer: C Topic: Concept?2.1 Skill: Knowledge/Comprehension

Chemistry of Life

Subject:

Biology

Rating:

No votes yet

Tags:

Chapter 6 The Chemistry of Life Atoms and Their Interactions Elements Carbon, hydrogen, oxygen, and nitrogen make up more than 96% of the mass of a human body. Atoms All nuclei contain: positively charged particles called protons (p+) particles with no charge called neutrons (n0). Electron cloud The region of space surrounding the nucleus contains extremely small, negatively charged particles called electrons (e-) This region of space is referred to as an electron cloud. Energy levels The first energy level can hold only two electrons. The second level can hold a maximum of eight electrons. The third level can hold up to 18 electrons. How many electrons are in fluorine?s 2nd energy level? How many protons are in an atom of fluorine? Isotopes

Campbell Biology Chapter 2 Study Guide

Subject:

Biology

Rating:

No votes yet

Tags:

ion

Helium

Name Period Chapter 2: The Chemical Context of Life This chapter covers the basics that you may have learned in your chemistry class. Whether your teacher goes over this chapter, or assigns it for you to review on your own, the questions that follow should help you focus on the most important points. Concept 2.1 Matter consists of chemical elements in pure form and in combinations called compounds Define and give an example of the following terms: matter: element: compound: What four elements make up 96% of all living matter? What is the difference between an essential element and a trace element? essential element: trace element: Concept 2.2 An element?s properties depend on the structure of its atoms

Class Notes

Social Science

Math

Science

Fine Arts

Test Prep

Textbook Notes

Members Only

Forum

Blogs

Textbook Request

Principles of Chemistry Chapter 7

Organic Chapter 2 ppt

AP Biology Basic Chemistry

AP BIO Chapter 02

AP BIO CHP 2 CAMPBELL BIOLOGY 9e

Chapter 9

Campbell AP Bio Study Guide Chapter 2

campbell_ap_bio_practice_test_ch2

Chemistry of Life

Campbell Biology Chapter 2 Study Guide

Pages

Need Help?

Need Notes?

About Course-Notes.Org

You are here

Covalent bond

Pages

Need Help?

Need Notes?

About Course-Notes.Org