Ivan

Páginas: 3 (710 palabras) Publicado: 23 de septiembre de 2012
Conceptuel map of bonds
They are
Non-polar
Polar
Between metals
Bonds

Which are
Intermolecular forces
have
Don’t have
Depending on
Ionic
Electronegativity
are
Hydrogen bondsDipole-dipole
Ion-dipole
Ion-ion
London dispersion
Dipolar moment
Covalent
Identical atoms
Regular
Metalic
Ionic
Divided

Section Review pages 408-411.
2. Explain how solid naphthalene inmothballs is distributed evenly through clothes in a drawer.
-Although naphthalene is solid it sublimates into vapors on the dryer that’s how it gets evenly distributed on clothes.
4. Carbon tetrachloride,CCL4, is non-polar. What forces hold the molecules together?
-The bonds between C and CL are polar so they are pulled together by their different charges, but the molecule is symmetric so thevectors of the forces add up to 0.
5. Compare dipole-dipole forces and hydrogen bonds.
-Dipole-dipole happen when two polar molecules find each other and join positive side with negative side or viceversa and hydrogen bonds happen when an hydrogen atom joins to a very electronegative atom or a one with electrons doubles missing and also very small.
9. Compare the arrangement and movement ofparticles in the solid, liquid, and gas states of matter.
-Solid: they are very close together and they only vibrate as they have almost no space to move.
-Liquid: They have a little more space betweenheir particles which allows movement but they are still close between them.
-Gas: They are apart from each other so they move freely with occasional clashes to another gas particle.
14. Contrast ionicand molecular substances in terms of the types of attractive forces that govern their behavior.
-Ionic substances have stronger bonds because there are charged ions participating on the bonding;they are mainly electrostatic forces, opposite to the molecular bonds which are governed by vander vaal’s force of attraction.
15. Is the melting point of CaCl2 higher than that of NaCl or lower?...
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