Wednesday, September 27, 2006
Daily Recap
I haven't done this before but it may be helpful to both of us to read a daily recap of class material so, here goes:
Day 13 (yes, this was our 13th day of school!)
AP: we had our mammoth stoichiometry exam which covered just about everything since day one. I removed from the final test draft a disproportionation redox balancing in basic solution question and a percent composition to empirical formula (involving a 4 element compound) question. Expect one or both of those questions on the next stoichiometry test.
Regents: after doing some more subatomic particle calculations of isotopes of atoms, cations, and anions (the class seemed to do that easily, which is a good sign), we learned how to calculate the atomic mass of an element given the percent abundance of each isotope and the respective atomic mass of each isotope.
Tomorrow, we will learn how to calculate the percent abundance of each isotope if we are given the atomic mass of the element and the atomic mass of each isotope of that element.
Look for a worksheet on the class website for practice with these formulas.
Honors D,G: we finished our calculations of the percent abundance of each isotope of a given element given the atomic mass of the element and the atomic mass of each isotope of that element. Look for a worksheet on the class website for practice with these formulas. We then began a discussion of atomic theory; we will learn about all of the evidence and major experiments that led to our current atomic model.
You will need to understand and write an explanation of EACH experiment, the evidence collected, and how the evidence was consistent with each proposed model of the atom. I will be showing you videos and illustrations of these famous experiments.
D period has a lab tomorrow. We will continue with lab safety and measurements. Bring your lab notebook so that you can record crucial information on how to make measurements in experiments and what those measurements mean regarding accuracy and precision; those words are NOT synonyms!
Day 13 (yes, this was our 13th day of school!)
AP: we had our mammoth stoichiometry exam which covered just about everything since day one. I removed from the final test draft a disproportionation redox balancing in basic solution question and a percent composition to empirical formula (involving a 4 element compound) question. Expect one or both of those questions on the next stoichiometry test.
Regents: after doing some more subatomic particle calculations of isotopes of atoms, cations, and anions (the class seemed to do that easily, which is a good sign), we learned how to calculate the atomic mass of an element given the percent abundance of each isotope and the respective atomic mass of each isotope.
Tomorrow, we will learn how to calculate the percent abundance of each isotope if we are given the atomic mass of the element and the atomic mass of each isotope of that element.
Look for a worksheet on the class website for practice with these formulas.
Honors D,G: we finished our calculations of the percent abundance of each isotope of a given element given the atomic mass of the element and the atomic mass of each isotope of that element. Look for a worksheet on the class website for practice with these formulas. We then began a discussion of atomic theory; we will learn about all of the evidence and major experiments that led to our current atomic model.
You will need to understand and write an explanation of EACH experiment, the evidence collected, and how the evidence was consistent with each proposed model of the atom. I will be showing you videos and illustrations of these famous experiments.
D period has a lab tomorrow. We will continue with lab safety and measurements. Bring your lab notebook so that you can record crucial information on how to make measurements in experiments and what those measurements mean regarding accuracy and precision; those words are NOT synonyms!
# posted by C @ 4:57 PM 
