Intermolecular Forces
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| 654944751 | What does the state of a substance depend on ? | The kinetic energy of the particles and the energy of attraction | |
| 654944752 | What two things can change the state of matter? | Temperature and Pressure | |
| 654944753 | Weaker | Are intermolecular forces weaker or stronger than covalent or ionic bonds? | |
| 654944754 | Increases | Does melting point increase or decrease with an increase in molar mass? | |
| 654944755 | Forces that are present in solutions and exist between an ion and a partial charge of a polar molecule | Ion-Dipole Forces | |
| 654944756 | The three types of intermolecular forces are... | Dipole-Dipole Forces London Dispersion Forces Hydrogen Bonding | |
| 654944757 | London Dispersion Forces are present between... | Non-polar molecules | |
| 654944758 | Polarizability | ease for which an instantaneous dipole can be created - will increase with molecular size **More polarizable molecules will have greater dispersion forces*** | |
| 654944759 | London Dispersion Forces are the only electrostatic force that are among... | all molecules whether polar or nonpolar | |
| 654944760 | N, O, and F | Hydrogen Bonds occur between what three elements? | |
| 654944761 | Viscosity | Resistance of a liquid to flow | |
| 654944762 | Cohesion | Similar molecules are attracted to one another | |
| 654944763 | Adhesion | Molecules are attracted to the walls of their container | |
| 654944764 | Capillary Action | Molecules work their way up a narrow tube | |
| 654944765 | Phase Changes | Changes from one state to another | |
| 654944766 | The 3 phases | Solid, Liquid, Gas | |
| 654944767 | Heat of Fusion | energy required to cause the change from a solid to a liquid, denoted, deltaHoffusion | |
| 654944768 | Heat of Vaporization | energy required to cause the change from a liquid to a gas, denoted, deltaHofvaporization | |
| 654944769 | Intermolecular Attractions | Going from a liquid to a gas overcomes all | |
| 654944770 | Heat of Sublimation | energy change required for going from a solid to a gas | |
| 654944771 | Calculating change in enthalpy (equation) | delta"H"=q(m)(c)(changeinheat) Used for ascending or descending lines | |
| 654944772 | Calculation enthalpy in a phase change | DELTA"h"OFFUSION X #OFMOLES | |
| 654944773 | Supercooling | temporarily cooling a liquid below its freezing point without forming a solid | |
| 654944774 | Critical Temperature | highest temperature where a distinct liquid phase can be formed | |
| 654944775 | Critical Pressure | pressure needed to get a liquid at the critical temperature | |
| 654944776 | Vapor Pressure | constant value of the pressure of the vapor above a liquid | |
| 654944777 | Dynamic Equilibrium | when two opposing processes are occurring at the same time with equal rates | |
| 654944778 | Volatile | Substances that evaporate readily | |
| 654944779 | pressure | Boiling point will increase with increasing... | |
| 654944780 | Triple Point | When all phases are in equilibrium | |
| 654944781 | Crystalline Solid | atoms, ions, or molecules are arranged in a well-ordered arrangment | |
| 654944782 | Amorphous Solid | particles that have no ordered arrangment | |
| 654944783 | Unit Cell | repeating unit of a crystalline solid | |
| 654944784 | Primitive Cubic | atoms located only at the corners, each atom will be part of 8 cubic cells | |
| 654944785 | Body Centered | atoms at corners and one atom in the center of the cube | |
| 654944786 | Face Centered | atoms at corners and one atom in the center of each face, atoms on the face are each part of two cubic cells | |
| 654944787 | 1 centimeter = ? Angstroms | 10e-10 | |
| 654944788 | Hexagonal Close packing | when the spheres of the first and third layers are in line | |
| 654944789 | Cubic Close Packaging | when the first and third layers are not in line | |
| 654944790 | Coordination Number | number of particles immediately surrounding a particle in a crystal Usually 12 | |
| 654944791 | Molecular Solids | Soft, low melting points. Gases and liquids at room temperatures | |
| 654944792 | Covalent Network | Harder and higher melting points that molecular solids | |
| 654944793 | Ionic Solids | Strength and melting point are dependent upon charge | |
| 654944794 | Metallic Solids | Made of metal atoms. stronger bonding than intermolecular forces. Delocalized electrons |
