intermolecular forces

Rating:

No votes yet

Tags:

Gases

Materials science

Enthalpy of vaporization

Boiling point

1 Chapter 10 - Liquids and Solids 10.1 Intermolecular Forces A. Dipole-Dipole Forces 1. Attraction between molecules with dipole moments a. Maximizes (+) ----- ( - ) interactions b. Minimizes (+) ----- ( + ) and (-) ----- ( - ) interactions 2. About 1% of strength of ionic bonds a. Unimportant in gas phase due to distance between molecules B. Hydrogen Bonding 1. Special dipole-dipole attraction a. Hydrogen covalently bonded to highly electronegative elements (N, O, F) has a higher than normal d+ charge 2. Bond strength is higher than other dipole-dipole attractions 3. Important in the bonding of molecules such as water and DNA C. London Dispersion Forces 1. Instantaneous dipoles a. Random movement of electrons can create a momentary

Principles of Chemistry Chapter 8

Subject:

Rating:

No votes yet

Tags:

Quantum chemistry

Chemical properties

Theoretical chemistry

Polymer

Chapter 8: Molecules and Materials Section 8.2: Condensed Phases--Solids Monday, October 13, 2014 1:00 PM Arrangements of Solids: ? Crystalline solid - solids with regular, repeating geometric arrangements of atoms, ions, or molecules Amorphous solids - noncrystalline solid with random arrangement of atoms or molecules ? **crystalline solids are more common and well-known ? Arrangements can be thought of as packing marbles together in a box (especially since atoms are spherical) We can reduce space between atoms--but not eliminate it--by rearranging the atoms in the structure "packing efficiency" - percentage of total volume that is actually occupied by atoms in a crystal lattice Affected by density of the material ? ? ? Types of Structures ? ? Cubic Crystal lattices: ? ? ?

Chapter 12a

Subject:

Rating:

No votes yet

Chemistry 1220: Introduction to General Chemistry Dr. Gina M. Florio 08 Dec. 2012 Jespersen, Brady, Hyslop Chapter 12.1-12.5 Intermolecular Attractions and the Properties of Liquids and Solids 1 Phases of Matter Intermolecular Interactions (interactions between molecules) determine the physical properties/states of matter . Important differences between gases, solids, and liquids: Gases Expand to fill their container Liquids Retain volume, but not shape Solids Retain volume and shape Types of Intermolecular Interactions Dipole-Dipole (including Hydrogen Bonding) Ion-Dipole Dispersion (Induced Dipole-Induced Dipole) Ion-Induced Dipole Intermolecular Interactions (interactions between molecules):

properties of water

Subject:

Biology

Rating:

No votes yet

Tags:

Inorganic solvents

Oxides

Equilibrium chemistry

water

PH

1 Name _______________________________ Date _________________ Period _________ Extraordinary properties of Water ppt Questions 1. What is the formula for a molecule of water? 2. Which atom in water attracts more negative electrons? 3. Water is a ________________ molecule because it has an equal number of ________________ and ___________________. 4. What is water?s net charge? 5. Water is called a _______________ molecule because the oxygen end ?acts? _____________ charged and the hydrogen end ?acts? _______________ charged. 6. One hydrogen bond is ____________, but many hydrogen bonds are ____________. 7. How do hydrogen bonds form? PROPERTIES OF WATER 8. At sea level, water boils at _______________ and freezes at ____________.

Chapter 3 Outline

Subject:

Biology

Rating:

No votes yet

Tags:

water

Chapter 3 Biology Outline- ?Water and the Fitness of the Environment? The polarity of water molecules results in hydrogen bonding Water is more extraordinary than people thing because water is everywhere. The unequal ?v? shape of a water molecule makes it a ?polar molecule?. Polar molecules have a positive charge on one side of the molecule and a negative charge on the other side. The polar molecules are attracted to each other (they are like magnets) and that is why water always forms droplets and stays together. Four emergent properties of water contribute to Earth?s fitness for life Cohesion Water molecules stick together due to hydrogen bonding. Cohesion contributes to the transportation of water and dissolved nutrients going against gravity in plants.

chapter 11 intermolecular forces, liquids, and solids

Subject:

Rating:

No votes yet

Tags:

Chemical engineering

Chemical properties

Condensed matter physics

London dispersion force

Molecular solid

? 2009, Prentice-Hall, Inc. Chapter 11 Intermolecular Forces, Liquids, and Solids John D. Bookstaver St. Charles Community College Cottleville, MO Chemistry, The Central Science, 11th edition Theodore L. Brown, H. Eugene LeMay, Jr., and Bruce E. Bursten ? 2009, Prentice-Hall, Inc. ? 2009, Prentice-Hall, Inc. States of Matter The fundamental difference between states of matter is the distance between particles. ? 2009, Prentice-Hall, Inc. ? 2009, Prentice-Hall, Inc. States of Matter Because in the solid and liquid states particles are closer together, we refer to them as condensed phases. ? 2009, Prentice-Hall, Inc. ? 2009, Prentice-Hall, Inc. The States of Matter The state a substance is in at a particular temperature and pressure depends on two antagonistic entities:

Inter/IntraMolecular Forces

Subject:

Rating:

No votes yet

SocialTags:

Intermolecular forces

Supramolecular chemistry

Dipole

Tags: