Tuesday, January 20, 2009
Tues-Day 2
AP Chem- we discussed the various types of solids: atomic or molecular, covalent-network, ionic, and metallic. We saw examples of each solid type and discussed the intermolecular forces of attraction or the bonds that hold the lattice particles in place.
We related the strength of the attractive forces to the physical properties i.e. typical melting point range of each type of solid; we discussed the simplified reason for electrical conductivity (NET movement of electrons through a lattice or ions in the liquid or aqueous phase) in metals as well as the non-conductivity of the other solid types.
Bio 6- we reviewed the digestion/endocrine system test, discussing graphing and test skills.
Bio 7/8- we watched the historic presidential inauguration; then, we reviewed the structure of veins and arteries. We then looked at the mechanics of the heartbeat: we saw a video showing the sequential contractions of the atria and the ventricles; we traced the flow of blood from each chamber of the heart and noted whether the blood was higher in oxygen/lower in carbon dioxide or vice versa.
We related the strength of the attractive forces to the physical properties i.e. typical melting point range of each type of solid; we discussed the simplified reason for electrical conductivity (NET movement of electrons through a lattice or ions in the liquid or aqueous phase) in metals as well as the non-conductivity of the other solid types.
Bio 6- we reviewed the digestion/endocrine system test, discussing graphing and test skills.
Bio 7/8- we watched the historic presidential inauguration; then, we reviewed the structure of veins and arteries. We then looked at the mechanics of the heartbeat: we saw a video showing the sequential contractions of the atria and the ventricles; we traced the flow of blood from each chamber of the heart and noted whether the blood was higher in oxygen/lower in carbon dioxide or vice versa.
# posted by C @ 10:28 PM 
