Determination of density: Practice for Science 7 on 4/5 October

Science 7 Dr. Frazier Oct. 4/5 periods 5/1,3,4

KEEP COMPLETE, NEAT, WELL-ORGANIZED , ACCURATE, AND WELL-LABELLED RECORDS. SHOW YOUR WORK. Write your expectations for each measurement before you carry out the procedure.

  1. Determine the density of water using any volume of water. Enter your results on the class table. Determine the density of water using 100 ml of water. Enter your results on the class table for water.
  2.  Take a lump of clay and fashion it into a rectangular prism (box). Find the density of the clay. Enter your results on the class table for clay. Now cut the clay rectangular prism so that you have one piece that is (as close as you can make it) 1 cm3 in volume. Find the mass. How close is the mass to the density you determined in the larger sample of clay?
  3. Get a supply of sugar in a plastic cup. Weigh another plastic cup and add 100 grams. Get a beaker and add 100 ml (cm3 of water). Slowly, bit by bit, add sugar from your 100 grams to the 100 ml of water. Stir with a separate spoon. STOP when no more sugar dissolves. At this point you have a saturated solution. How much sugar did you add to the 100 ml of water? Now, use 50 ml of the saturated sugar solution and find the density.

 

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