Thursday, November 19, 2015

Biochemistry Quiz - Caffeine









For the atoms labeled I - III

label the molecular geometry (shape) and the bond angles.


Choose any other carbon that is NOT like Carbon labeled I and make that atom IV.  Label its molecular shape and bond angles.

Monday, November 9, 2015

Molecular Geometry / Polarity Practice

Tutorial on polar vs. nonpolar

Polar vs. Nonpolar Practice Problems  (with Ionic!)

As for practice problems thinking about molecules in 3D - go to the applet to the right and look at the "real" molecules.  Try to build them using only the formula and then click on them to see if you were correct

Monday, October 26, 2015

Covalent Bonding Resources/Practice



https://www.sophia.org/tutorials/multiple-covalent-bonds--2

https://www.sophia.org/tutorials/lewis-dot-diagrams-of-molecules-single-bonds

https://www.sophia.org/tutorials/lewis-dot-diagrams-of-molecules-double-bonds

https://www.sophia.org/tutorials/lewis-dot-diagrams-of-molecules-double-bonds


http://teacherweb.com/WA/CloverParkHighSchool/Meldrum/Electron-Lewis-Dot-IampII-and-answers.pdf

Tuesday, October 13, 2015

Biochemistry Exam - Material to be Assessed

Here is the content that will be covered on this exam:


  • Atomic Structure
    • Protons, Neutrons and Electrons (symbols, location, charge)
    • Isotopes
    • Periodic Table (avg atomic mass, atomic number)
  • Ions
    • Cations and their charges (groups 1, 2 and 3 only)
    • Anions and their charges (groups 15, 16 and 17)
  • Naming Ionic Compounds
    • Monatomic Ions (i.e, NaCl)
    • Polyatomic Ions (i.e. NaNO3) **can't subscript on blogspot, my apologies)
  • Naming Covalent Molecules
    • Binary molecules use prefixes (CO vs CO2) ** 
  • EM Radiation
    • EM Spectrum
    • Higher vs Lower Energy
    • speed of light  = wavelength x frequency
    • Relationship between wavelength, frequency and energy
  • Energy of Photons
    • E = h x V
    • Calculating Energy to compare to EM Spectrum
  • Experimental Design
    • Hypothesis 
    • Representing Data
    • Using Data to Draw Conclusions
    • Constants vs. Variables vs. Controls
  • Precision vs. Accuracy
    • Precision in the equipment
    • Precision in the form of repeatable data/results
    • Accuracy comparing you results to known, accepted values
  • Significant figures
    • Number of Sigfigs in a given measurement
    • Sigfig rules for zeroes
    • Rounding to correct sigfigs during calculations