Wednesday, September 7, 2011

Density, period 4. 9/7/11

DENSITY
Homework: Denisity worksheet due Friday! Dont forget webassign due the 19th!
Today in class we...
1) reviewed the homework we did about desnity (Density=mass over volume). The density 3 sheet in your notebooks.
2) Then Mr.Paek told us about the lab we were doing about, you guessed it, more density!
LAB:
We used 10 mL graduated cylidners and 100 mL cylinders, a metal bar and a nail. We measured the metal bar to find the mass, and used the nail to find the nails volume by placing the nail in the 10 mL cylinder. You then found the volume of the nail by taking the original amount of water, and the new amount of water that the nail displaced, and subtract the two numbers and thats how you find volume.We also found the mass of each cylinder (10 and 100 mL), by measuring the mass of the empty cylinder, then filled it half way with water and measured that, then found the volume of the liquid by suptracting the numbers. The pages for this you would need to get from Mr. Paek.
Remember: density=mass over volume
volume=length x width x height.
Tomorrows blogger is Michael L. (It was COMPLETLY random)
Colleen L.

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