• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Day 5 Intro-to-Chem
Day 5 Intro-to-Chem

... oxide reacts with water to form sodium hydroxide (NaOH). If you evaporate the water, you will have solid NaOH not Na2O. S Sodium oxide has different chemical properties compared to salt, and so ...
Chapter 8
Chapter 8

... quantum-mechanically to a pair of boxes separated by a barrier. ※References:Modern Physics for scientists and engineers, Stephen T. Thornton Nonclassical Physics, RandyHarris.Quantum Physics of atoms, molecules,Solids,nuclei and Particles. Eisberg & Resnick ...
APS Practice Final 2011
APS Practice Final 2011

... ____ 102. If you are given the mass of an object in pounds, the time in seconds, and the distance in feet, what must you do before you can calculate the momentum in SI units? a. convert the mass to kilograms c. Both (a) and (b) b. convert the distance to meters d. None of the above ____ 103. Weight ...
covalent - Typepad
covalent - Typepad

... Identify the letter of the choice that best completes the statement or answers the question. 1. In the compound sodium fluoride, NaF, the sodium atom loses one electron and the fluorine atom gains one electron to form ions that are isoelectric with a. helium. c. neon. b. oxygen. d. calcium. 2. Atoms ...
Slide 1 - Southwest High School
Slide 1 - Southwest High School

... Phosphorescence is similar, except that the excited state is metastable, allowing the object to continue to glow long after light has ceased falling on it. This is how glow-in-the-dark paints and plastics work. ...
6.5-6.9 1 6.5 Quantum Mechanics and Atomic Orbitals
6.5-6.9 1 6.5 Quantum Mechanics and Atomic Orbitals

...  What properties of the electron do the principal quantum number(n), the angular momentum quantum number(l) and the magnetic quantum number determine(ml). What values can each of these quantum numbers have, how are their values related?  What are the shapes of the orbitals for different values of ...
Problem Set 11: Chemistry Graduate Quantum I Physics 6572
Problem Set 11: Chemistry Graduate Quantum I Physics 6572

... third 2p electron from the nucleus. This emitted particle is called an Auger electron. ...
Document
Document

...  What can we learn about an electron from a wave function?  What properties of the electron do the principal quantum number(n), the angular momentum quantum number(l) and the magnetic quantum number determine(ml). What values can each of these quantum numbers have, how are their values related? ...
Electrons in Atoms
Electrons in Atoms

... Democritus: Came up with the idea of atoms. Dalton: Demonstrated idea of atom experimentally. Thomson: Demonstrated that there were electrons. Rutherford: Showed that the mass of an atom is concentrated in a small, positively charged nucleus. Bohr: Proposed that electrons move around the nucleus in ...
Covalent Bonding and Nomenclature
Covalent Bonding and Nomenclature

... Exceptions to the Octet Rule ...
AP CHEMISTRY – Source: 1999 AP Exam CHAPTER 8 PRACTICE
AP CHEMISTRY – Source: 1999 AP Exam CHAPTER 8 PRACTICE

... Directions: Each set of lettered choice below refers to the numbered statement immediately following it. Select the one lettered choice that best fits each statement and then fill in the corresponding oval on the answer sheet. A choice may be used once, more than once, or not at all in each set. Que ...
Advanced Placement (AP) Chemistry 2012 – 2013 Ramsay High
Advanced Placement (AP) Chemistry 2012 – 2013 Ramsay High

... The laboratory requirements are met by requiring students to complete laboratory work during the school day, an additional four hours per month is required for lab. This may be done before school, after school, during lunch or on the weekends. Students will also attend three six hour Saturday sessio ...
P301_2009_week9
P301_2009_week9

... the direct interactions between the electrons and the nucleus. By looking at figure 7.12, identify the value(s) of l (the angular momentum quantum number) for which you’d expect these effects to be largest. •I think that the effects would be largest at l = 1 because the electron is most tightly boun ...
6 Electronic Structure of Atoms
6 Electronic Structure of Atoms

... There are two main pieces of experimental evidence for electron “spin”: the Stern-Gerlach experiment and line spectra of multi-electron atoms. The SternGerlach experiment shows that a beam of neutral Ag atoms passed through an inhomogeneous magnetic field is deflected equally in two directions. This ...
the electron - QuarkPhysics.ca
the electron - QuarkPhysics.ca

... All the different types of bonds between atoms are due to electrons. If electrons did not form bonds, no atoms would ever be joined together. That means that there would be no molecules, no liquids, and no solids, only monatomic gases. There are 5 different types of bonding between atoms. Almost all ...
1 - Academics
1 - Academics

... In essence, what this means is: a) No particle can travel faster than Planck’s Constant; b) The velocity and the position of an electron can be measured to greater than h/4 significant figures; c) Electrons exhibit wave-particle duality but nothing else does; d) The momentum and the position of a p ...
aq - Wikispaces
aq - Wikispaces

... The table on the left gives the eight most commonly used prefixes in the metric system. It also includes five rows that do not have prefixes. The middle row is for the unit: metre, litre, gram, newton, or any other legal metric unit. ...
Practice problems for chapter 1, 3 and 5 1) A small amount of salt
Practice problems for chapter 1, 3 and 5 1) A small amount of salt

... E) -6 30) Horizontal rows of the periodic table are known as __________. A) periods B) groups C) metalloids D) metals E) nonmetals 31) Elements in Group 7A are known as the __________. A) chalcogens B) alkali metals C) alkaline earth metals D) halogens E) noble gases 32) When a metal and a nonmetal ...
end of year review
end of year review

... _____13. This holds a sample of barium iodide, BaI2, together A) B) C) D) ...
Notes Unit 5-4
Notes Unit 5-4

... • 1 mole = 6.02 x 1023 particles • Mole = amount of a substance “mol” • Avogadro’s Number • Based on the weight of carbon-12 atoms. ...
Quantum Numbers
Quantum Numbers

... 7. Answer the following questions as a summary quiz on the chapter. [Check answer in book #78] a) The quantum number n describes the _______ of an atomic orbital. b) The shape of an atomic orbital is given by the quantum number ____. c) A photon of orange light has _____ (less or more) energy than ...
South Pasadena · Chemistry
South Pasadena · Chemistry

... 7. Answer the following questions as a summary quiz on the chapter. [Check answer in book #78] a) The quantum number n describes the _______ of an atomic orbital. b) The shape of an atomic orbital is given by the quantum number ____. c) A photon of orange light has _____ (less or more) energy than ...
Production of Materials by Jimmy Huang
Production of Materials by Jimmy Huang

... dissolve polar substances due to the powerful hydrogen bonding. For these properties, ethanol is widely used in cosmetics, food colouring, antiseptics and cleaning agents. Ethanol As A Renewable Resource and a Fuel Ethanol is a liquid and burns readily, and has therefore been proposed as an alternat ...
Practice Qs - Unit 6a
Practice Qs - Unit 6a

... 9. What do the ionic compounds in #8 all have in common? How are they named? They all contain metals w/ more than 1 possible charge (oxidation state). + ion: always first (element name or ammonium Charge of metal ion goes as Roman numeral in ( ) - ion: second (name on Table E or root / ide ending) 1 ...
401
401

... otherwise bosonic interference may disturb the basis of the science. For example, many quantum chemistry theories start from Slater determinants, putting all electrons within determinantal wave functions. We will show that the antisymmetry is not necessary for the pair of electrons that are distant ...
< 1 ... 145 146 147 148 149 150 151 152 153 ... 279 >

Chemical bond



A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are ""strong bonds"" such as covalent or ionic bonds and ""weak bonds"" such as Dipole-dipole interaction, the London dispersion force and hydrogen bonding.Since opposite charges attract via a simple electromagnetic force, the negatively charged electrons that are orbiting the nucleus and the positively charged protons in the nucleus attract each other. An electron positioned between two nuclei will be attracted to both of them, and the nuclei will be attracted toward electrons in this position. This attraction constitutes the chemical bond. Due to the matter wave nature of electrons and their smaller mass, they must occupy a much larger amount of volume compared with the nuclei, and this volume occupied by the electrons keeps the atomic nuclei relatively far apart, as compared with the size of the nuclei themselves. This phenomenon limits the distance between nuclei and atoms in a bond.In general, strong chemical bonding is associated with the sharing or transfer of electrons between the participating atoms. The atoms in molecules, crystals, metals and diatomic gases—indeed most of the physical environment around us—are held together by chemical bonds, which dictate the structure and the bulk properties of matter.All bonds can be explained by quantum theory, but, in practice, simplification rules allow chemists to predict the strength, directionality, and polarity of bonds. The octet rule and VSEPR theory are two examples. More sophisticated theories are valence bond theory which includes orbital hybridization and resonance, and the linear combination of atomic orbitals molecular orbital method which includes ligand field theory. Electrostatics are used to describe bond polarities and the effects they have on chemical substances.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report