|Density of solids & liquids||Honors Chemistry|
background [prelab assignment (15 points) due at the begining of lab]
design / describe how to determine the density of a solid / liquid using a least-squares regression analysis, i.e. graphical data analysis
sketch a data table for your experimental measurements (i.e. review the purpose & content of your lab report)
msds on isopropanol (or isopropyl alcohol)
is there a difference in the density among the different coins ?
is there a difference in the density among the different liquids ?
new & old pennies (1982 "divides" old & new pennies), dimes
isopropyl alcohol, water;
graduated cylinder; balance; pipet
determine the density using least-squares analysis
Content of the lab report (30 points)
introduction (10 points)
how to determine density using graphical analysis
basis of least-squares analysis
data analysis (10 points)
determination of density of coins / liquids using least-squares analysis
discussion (10 points)
statistics (include interpretation of p-value) to compare density among solids; denisty among liquids
does your results support / refute the known relative composition of new versus old pennies ? elaborate.
lab activity source (examples): site 1 & site 2 [access 4 / 2009]