AngieW in Texas
02-27-2009, 11:37 PM
I have had issues with the last two lessons we've done in Spectrum Chemistry, so I figured I ought to let y'all know.
Lesson 42 covers Charles' Law, Gay-Lussac's Law, and the combined gas law. While it does say that V=kT, where k is a constant and T is the absolute temperature (K) at a constant pressure, it doesn't tell you how to calculate absolute temperature. It does show absolute temperature in the teacher's helper, but it doesn't show how you convert degrees Celsius to Kelvin. It's very easy, but it ought to be in the student book. To convert from Celsius to Kelvin, you just have to add 273.15 to the Celsius temperature.
Lesson 43 is about Dalton's Law and Avogadro's Law. To be able to work the problems for Avogadro's Law, you have to know standard temperature and pressure. STP was given in one sentence back in lesson 41, but then standard temperature wasn't mentioned again. Standard pressure was mentioned quite a few times, so my dd remembered it, but she didn't remember that standard temperature was 0 Celsius (273.15 Kelvin).
For any who are thinking of using the program secularly, so far the only religious content has been the dedication of the book, one paragraph in the 1st lesson, and one paragraph in the 43rd lesson. The last lesson is one page and is a discussion of chemistry and evolution.
Lesson 42 covers Charles' Law, Gay-Lussac's Law, and the combined gas law. While it does say that V=kT, where k is a constant and T is the absolute temperature (K) at a constant pressure, it doesn't tell you how to calculate absolute temperature. It does show absolute temperature in the teacher's helper, but it doesn't show how you convert degrees Celsius to Kelvin. It's very easy, but it ought to be in the student book. To convert from Celsius to Kelvin, you just have to add 273.15 to the Celsius temperature.
Lesson 43 is about Dalton's Law and Avogadro's Law. To be able to work the problems for Avogadro's Law, you have to know standard temperature and pressure. STP was given in one sentence back in lesson 41, but then standard temperature wasn't mentioned again. Standard pressure was mentioned quite a few times, so my dd remembered it, but she didn't remember that standard temperature was 0 Celsius (273.15 Kelvin).
For any who are thinking of using the program secularly, so far the only religious content has been the dedication of the book, one paragraph in the 1st lesson, and one paragraph in the 43rd lesson. The last lesson is one page and is a discussion of chemistry and evolution.