Lab 2E Determining Aluminum Foil Thickness

  During this lab. We learn how to get the value of some tiny measurements. For example, it's hard to measure the thickness of a Aluminum Foil's thickness. Therefore, we use the density and volume formula to calculate it. The density of aluminum is 2.70g/cm^3

     1. measure the length and width of each piece of foil. Record the measurements in th table we made.
     2.use a centigram balance to find the mass of each piece, record the mass.
     3.use the density fomula d=m/v, change it to v=m/d to get the volume of the foils
     4.use height=volume/width·length to get the thickness.

Here is an example of our calculation.

v=m/v=0.98g/2.70g/cm^3=0.363 cm^3
h=v/wl=0.363cm^3/15.47cm x 15.14cm=1.55 x 10^-3 cm


In this lab, we learn that not all the measurements need to be measured directly. We can use formula and other things to calculate it. It's easier and more accurate.