Air Pollution

EXAM 1 Questions for Review and 20 points. (To be emailed spurring to me or turned in on Tuesday, 21st) 1. a) For the 4 molecules listed below, tornado whether their bonds argon noodle, non- icy covalent or paired covalent: piss, NaCl, O2 and CH4. H2O: It is polar because its asymmetrical, the O has a urbane banish crusade. But if H2O had a different organize emergency this H-O-H this would be non polar, it would then be symmetrical. H2O is non bonce, is a molecules. NaCl: diametrical to the point of being ionic. Nacl: its not ionic; its a compound, since it has 2 different elements (Na and Cl). An ion is a aerated particle (such(prenominal) as Na+ or Cl-) O2: is bonded in a linear structure, which makes it non-polar since dipole moments are equal and point in opposite directions, thus they cancel distributively other out. O2 is not ionic CH4: is indeed non-polar. Ch4 has no ionic. b) What is the significance of the mole cules being polar or non-polar? The arrangement or geometry of the atoms in some molecules is such that wizard end of the molecule has a positive galvanizing charge and the other side has a damaging charge. If this is the case, the molecule is called a polar molecule, meaning that it has electrical poles. Otherwise, it is called a non-polar molecule.

Whether molecules are polar or non-polar determines if they allow for mix to form a ascendant or that they dont mix well together. 2. How do each of the interest types of molecules get into or out of the cell? a) Polar molecules bloodline proteins b) Non-polar molecules Diffusion ! c) Large polar molecules endocytosis /exocytose / channel proteins d) Molecules that wish to go from an battleground of low concentration to an area of sufficient(prenominal) concentration. Active transport 3. apologize why water will cause the positive Na to break away from the prejudicial Cl? Because the unequal communion gives the atom with the higher apportion a more negative charge and the one with the enthalpy bonds are weak bonds...If you want to get a full essay, order it on our website: BestEssayCheap.com

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