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Density Lab

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PRESENTATION OUTLINE

1.

DENSITY LAB

PURPOSE: IDENTIFY METALS BASED ON DENSITY
Photo by kevin dooley
2.

PROCEDURE!

3.

HINTS FOR A GOOD LAB

  • Use significant figures in your measurements (last digit is estimated)
  • Be sure all samples are dry and clean.
  • Don't break the graduated cylinder.
  • Wear goggles!!!
Photo by TommyClicks
4.

COLLECT DATA

WATCH SIGNIFICANT FIGURES!!!!
5.

SAMPLES

COPPER, LONG, SHINY, DULL, SMALL
6.

MASS

7.

MASS OF COPPER

8.

MASS

9.

MASS OF LONG

10.

MASS

11.

MASS OF SHINY

12.

MASS

13.

MASS OF DULL

14.

MASS

15.

MASS OF SMALL

16.

FINDING VOLUME

USING WATER DISPLACEMENT
17.

STEPS

  • Find initial water volume
  • Place sample into the water
  • Measure the final volume
  • Subtract the initial from the final
  • That equals the volume of the sample
Photo by Tim Green aka atoach
18.

VOLUME OF COPPER

INITIAL
19.

VOLUME OF COPPER

FINAL
20.

VOLUME OF LONG

INITIAL
21.

VOLUME OF LONG

FINAL
22.

VOLUME OF SHINY

INITIAL
23.

VOLUME OF SHINY

FINAL
24.

VOLUME OF DULL

INITIAL
25.

VOLUME OF DULL

FINAL
26.

VOLUME OF SMALL

INITIAL
27.

VOLUME OF SMALL

FINAL
28.

CALCULATE DENSITY

Photo by me_chris
29.

COMPARE ANSWERS

USE TABEL B-15 ON R67
30.

ACCEPTED RESULTS...

  • Copper
  • Long - Aluminum
  • Shiny - Tin
  • Dull - Zinc
  • Small - Lead
  • Use their densities to calculate percent error.
31.

CACULATE %error

32.

Be sure to put all information into your lab report!

Becky Parry