Can you build a 6, 7, or 8-layer density column? Think of it as a layered burrito…..

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Presentation transcript:

Can you build a 6, 7, or 8-layer density column? Think of it as a layered burrito…..

Density Lab: Introduction Anyone can stack blocks, boxes, or books, but only those with a steady hand and an understanding of density can stack liquids. What if you could stack different liquids in layers? Think of it as a science burrito! stevespangler.com

Density Lab: Materials Graduated cylinder (wider mouth works better) Food coloring Cups/small beakers Stirrers Safety goggles Dish soap* (Dawn blue works best) Honey* Light Karo syrup Rubbing alcohol Vegetable oil* Water Baby oil* Do not add food coloring

Density Lab: Procedure Mass the beaker and record. Measure the same amount (20 – 50 mL) of each liquid into a beaker, one liquid at a time. Mass the liquid in the beaker. Subtract the mass of the beaker to get the mass of the liquid. Record on chart. Calculate the density of each liquid. Record. SLOWLY and carefully pour the liquid with the greatest density into the cylinder. Pour into the center of the cylinder trying not to touch the sides of the cylinder. Continue SLOWLY pouring each liquid into the cylinder in order of greatest to least density.

Density Lab: Collect Data LiquidMass (g)Volume (mL)Density (g/mL)ORDER Dish soap80 mL1.06 g/mL3 Honey80 mL1.42 g/mL1 Lt. Karo syrup80 mL1.33 g/mL2 Rubbing alcohol80 mL0.79 g/mL *6 0r 7 * Vegetable Oil80 mL0.92 g/mL4 Water80 mL1.00 g/mL5 Baby Oil80 mL0.83 g/mL *6 or 7 * * Baby Oil actually floats on top

Density Lab: Results Draw an illustration of your density column. Label each layer.

Density Lab: Results MaterialDensityORDER Rubbing Alcohol.796 * Lamp Oil.80 Baby Oil.837 * Vegetable Oil.925 Ice Cube.92 Water1.004 Milk1.03 Dawn Dish Soap1.063 Light Corn Syrup1.332 Maple Syrup1.37 Honey layer-density-column * Baby Oil actually floats on top

Density Lab: Conclusion Explain in your own words how the density column works. Seven Layer Density Science May 10th, 2010 Seven Layer Density Science