Editing revision 6 of Lab Directions - Using Water Displacement To Calculate Density

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Editing old revision 6. Saving this page will replace the latest revision with this text.

Objective/purpose/hypothesis: To be able to calculate density of irregular shaped objects 
 
Materials/equipment 
1) &nbsp;<nowiki>Cent-O-gram</nowiki> balance 
2) &nbsp;25 mL graduated cylinder 
3) &nbsp;10mL graduated cylinder 
4) &nbsp;"no hole" 00 rubber stopper 
5) &nbsp;Metal cylinder 
 
Directions 
1. One partner gets the <nowiki>Cent-O-gram balance and "zero it out". Other partner gets all the other material from the lab and bring it to the lab station. 
2. Mass out the weight of both the rubber stopper and metal cylinder to the number of significant figures that the scale requires. 
3. Record masses in your data table. 
4. Using the DI water from the lab bench area, fill the 25mL graduated cylinder about 1/2 filled. 
5. Record volume (water for stopper) in your data table. 
6. Add the rubber stopped and record the new volume (as volume of water plus stopper). 
7. Record volume in your data table. 
8. Remove rubber stopper by pouring out water. Dry off stopper and put back where found it. 
9. Repeat Step 4 thru 7 for metal cylinder making sure that you indicate the initial volume of water is for the cylinder part of the experiment. 
10. Using the DI water from the lab bench area, fill the 10mL graduated cylinder about 1/2 filled. 
11. Add metal cylinder (making sure not lose any water) and record the new volume ( as volume of water from 10mL cylinder).

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