1) Intermolecular Forces a) attractive forces that exist between molecules b) forces outside c) cause random motion d) form spheres 2) what is thermal enegry a) the energy you give off when sweating b) energy associated with temperature-dependent random movement of atoms and molecules c) the air from fire d) can make liquid e) affect intermolecular forces creating a sample to be any phase 3) how are the molecules arranged in a gas?  a) separated by large distances b) separated by small distances  c) closely packed together 4) Molecular Solids and Liquids without intermolecular forces would be ____ a) nothing b) still water and liquid c) gaseous 5) Why are certain objects able to float on surface of a liquid?  a) viscosity b) surface tension c) density d) water repels objects intially 6) Why are surface molecules less stable a) interact with more molecules than interior b) interact with fewer molecules than interior 7) viscosity ?  a) resistance of a liquid to flow due to intermolecular forces b) thickness of a substancee c) liquid thinned by intermolecular forces 8) where is viscosity greatest? a) less intermolecular forces, more movement b) more intermolecular forces, less movement  c) no intermolecular forces d) in solids e) in gases 9) strong intermolecular forces have a) high melting and boiling points b) low melting and boiling points 10) strong intermolecular forces create a) liquids and solids b) gases 11) gases have a) low melting points b) high melting points c) high boiling points d) low boiling points 12) what force is present in all molecules and atoms a) dipole-dipole b) dispersion c) hydrogen bonding d) ion-dipole  13) dipole- dipole forces exist in ____ a) nonpolar molecules b) some polar molecules c) ionic molecules d) all polar molecules 14) what is a dipole  a) separation of charge from unequal protons  b) separation of charge from unequal electrons c) equal charge 15) T or F : the positive end of one permanent dipole is attracted to the negative end of another a) False b) True 16) Hydrogen bonds exist between a) Cl, F, N b) I, Ne, F c) O, N, F d) hydrogen only e) C,Ni,P,S 17) T or F: Hydrogen bonding is weaker than dipole-dipole forces a) true b) false 18) are intermolecular forces the same as chemical bonds? a) No, they are stronger b) No, they are wekaer

Intermolecular Forces Vocab

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