Thursday, September 20, 2007
Thurs-Day 2
Bio- we focused on data collection and manipulation. The main questions that came up involved how to properly label axes and how to space the data among the boxes on the graph.
Remember, the MAIN rule is that the difference in value per box MUST be the same for the entire axis (x or y) with the occasional exception of the "squiggly line" increment between the starting point and the first data point.
Tomorrow, we will do a quick lab in which you will manipulate some lab equipment and also discuss "the contest" further; thereafter, using the unit review question sheet, we will review for Monday's exam.
Chem 7/8- we performed a separation of the components of a mixture by taking advantage of the difference in physical properties (specifically, their degrees of solubility) of sand and salt in water. We used the separation technique of filtration to separate the insoluble solid sand (mostly silicon dioxide/quartz) from the aqueous salt solution, NaCl (aq) .
We then spent a period relating our knowledge of the classification of matter to pictures/models of the atom (Dalton's spherical, indivisible atom models). As you saw, there are many permutations of these pictures because there are so many different elements, compounds, solutions, and heterogeneous mixtures! That is why we had to calmly and methodically ask QUESTIONS about each picture and then deduce what type of matter we were dealing with. Practice will make you perfect with this particular skill and we finish doing every possible permutation, tomorrow.
Bring in your labs tomorrow as we will spend some time clearing up any final questions about the procedures, data, and calculations involved in the lab.
Chem 9-We related our knowledge of the classification of matter to pictures/models of the atom (Dalton's spherical, indivisible atom models). As you saw, there are many permutations of these pictures because there are so many different elements, compounds, solutions, and heterogeneous mixtures! That is why we had to calmly and methodically ask QUESTIONS about each picture and then deduce what type of matter we were dealing with. Practice will make you perfect with this particular skill and we finish doing every possible permutation, tomorrow.
Bring in your labs tomorrow as we will spend some time clearing up any final questions about the procedures, data, and calculations involved in the lab.
Remember, the MAIN rule is that the difference in value per box MUST be the same for the entire axis (x or y) with the occasional exception of the "squiggly line" increment between the starting point and the first data point.
Tomorrow, we will do a quick lab in which you will manipulate some lab equipment and also discuss "the contest" further; thereafter, using the unit review question sheet, we will review for Monday's exam.
Chem 7/8- we performed a separation of the components of a mixture by taking advantage of the difference in physical properties (specifically, their degrees of solubility) of sand and salt in water. We used the separation technique of filtration to separate the insoluble solid sand (mostly silicon dioxide/quartz) from the aqueous salt solution, NaCl (aq) .
We then spent a period relating our knowledge of the classification of matter to pictures/models of the atom (Dalton's spherical, indivisible atom models). As you saw, there are many permutations of these pictures because there are so many different elements, compounds, solutions, and heterogeneous mixtures! That is why we had to calmly and methodically ask QUESTIONS about each picture and then deduce what type of matter we were dealing with. Practice will make you perfect with this particular skill and we finish doing every possible permutation, tomorrow.
Bring in your labs tomorrow as we will spend some time clearing up any final questions about the procedures, data, and calculations involved in the lab.
Chem 9-We related our knowledge of the classification of matter to pictures/models of the atom (Dalton's spherical, indivisible atom models). As you saw, there are many permutations of these pictures because there are so many different elements, compounds, solutions, and heterogeneous mixtures! That is why we had to calmly and methodically ask QUESTIONS about each picture and then deduce what type of matter we were dealing with. Practice will make you perfect with this particular skill and we finish doing every possible permutation, tomorrow.
Bring in your labs tomorrow as we will spend some time clearing up any final questions about the procedures, data, and calculations involved in the lab.
# posted by C @ 11:52 AM 
