March 19, 2015
Check the answers to your half-life homework here:Half Life Answer Key Warm-Up Thursday March 19, 2015: 1. The half life of cesium-137 is 3.2 years. If the initial mass of Continue Reading →
Category Archives: First Five
March 18, 2015
Warm Up: Wednesday March 18, 2015 Using your knowledge of nuclear chemistry, write the equations for the following processes: 1) The alpha decay of radon-198 2) The beta decay of Continue Reading →
March 17, 2015
Here is a link to the worksheet for 25.1 and 25.2. Record your answers in your notebook. 25.1 and 25.2 Worksheet
March 16, 2015
Warm-Up Monday March 16, 2015: 1. The chemical formula of TNT is C7H5(NO2)3. Calculate the percent composition of each element in TNT. 2. If I have 5.2 x 10^26 molecules Continue Reading →
March 13, 2015
Warm-Up Friday March 13, 2015: Choose the best choice in each list: (a) highest first ionization energy: C, N, Si (b) largest radius: S anion (-2 charge) , Cl anion Continue Reading →
March 12, 2015
1..RANK EACH SET OF ATOMS FROM SMALLEST TO LARGEST ATOMIC RADIUS. Li, K, Cs, O Fe, P, Ra, Ti 2. WHICH ATOM IN THE SET HAS THE LARGER IONIZATION ENERGY? Continue Reading →
March 11, 2015
Warm-Up Wednesday, March 11, 2015: Review Problems Convert the following to scientific notation 1)237,000 2)50000 3) 0.00000045 Convert units and give your answer in scientific notation 4) 14 dekameters to Continue Reading →
March 10, 2015
Warm-Up Tuesday March 10, 2015: A light beam has an energy of 5.25 × 10-19 J. What is its wavelength? Write the longhand electron configuration for potassium. Write the noble Continue Reading →
March 6, 2015
***TURN IN YOUR BROCHURE TO THE BIN*** Check the answers to your electrons homework: Electrons Homework Answer Key Warm-Up: 1. Draw the orbital diagram for Aluminum. 2. Write electron configurations Continue Reading →
March 5, 2015
***Turn in your electromagnetic spectrum webquest to the bin.*** ***Reminder: Your brochure project is due tomorrow!*** Check your answers to the worksheet from yesterday about light and Bohr’s model: Light Continue Reading →