Wednesday, February 11, 2015

CP Physics Impulse momentum test review



     1.     Be able to calculate momentum using metric as well as English units.  Ex Find P if 120 kg deer                runs at 12 mi/hr.  



2   2.  Calculate change in momentum of Prob 1  if the deer speeds up and  is now going 24 mi/hr

3.  Find the Net force to make a watermelon stop in the water if dropped from a known height   and the mass, height and the time to stop it in the water are known. 
 You will need to use kinematics to get the velocity immediately before striking the water and then use impulse momentum to solve for the  braking  Force in the water to make it stop.


4   4.   Find final velocity of a known mass object , initially at rest  with a known force acting on it during a defined time period.  Use impulse momentum

   5.     Calcualte the impulse either directly using F and delta T or  indirectly by using m delta V

    6.      A known mass car cruising at a known velocity applies a known braking force  over a certain time.  Find the final velocity and the displacement.


7   7.   Solve for final velocity during an inelastic collision where masses and initial velocities a re known

8   8.   Find the final velocity of one object during an  elastic collision where initial velocity  and mass of both are known as well as final velocity of the other object.

Monday, February 9, 2015

CP Chemistry Study Guide for Covalent Bonding Test

Chemistry Covalent Bonding Study Guide

1.     Information hidden in a molecular formula
2.     Structural vs molecular formulas
3.     How do atoms achieve noble gas configuration in molecular compounds
4.     Diatomic molecules  (polarity, nature of the sharing,  ones with single, double or triple bonds))
5.     Using the noble gas configuration of a molecule, find the same configuration in a dif. element
6.     Smallest unit in a molecular compound
7.     Use EDD to identify single double or triple bonds between atoms in a molecule
8.     Coordinate cov. bonds
9.     Judge the reactivity of various cov bonds   Hint  = the more nonpolar is the least least reactive
10. Expanded octets in P and S and Cl  (exceptions)
11. Resonance structures
12. VSEPR theory  Know the reason for the shapes and the names of the shapes given the molecular formula
13.   VSEPR shapes include  linear, bent, pyramidal, and tetrahedral
14. predict eh aprox bond angle given the VSEPR shape  ex h20 angle = 109  deg vs COH(2)   = 120 deg   vs 180 deg in CO(2)
15. Predict polarity of a bond by location in the periodic table  ex rank HCL vs NH3)
16. Rank the strength of bonds by type
17. Cause of  dipole interactions
18. Relate melting point to  intermolecular bonding
19.  Bonding  in networking solids   and properties like melting point