procedure

2008-12-15T14:32:00.001-08:00

PROCEDURES
1. First gather all of the materials that you need.
2. Then pour 200 milliliters of water in the beaker that you have.
3. Place a round funnel on top of the graduated cylinder.
4. Then take the first brand of paper towel on your list and place it in the beaker.
5. Time for 15 seconds.
6. After 15 seconds, take the paper towel out of the beaker.
7. Squeeze all the water out of the paper towel into the graduated cylinder.
8. Record how much water is in the graduated cylinder.
9. Take the amount of water that was poured into the graduated cylinder and subtract that from 200 milliliters.
10. Next, try the test with 4 other brands of paper towels.
11. Each paper towel needs to be tested 4 times, but you need to record your data for each paper towel on your data table.
12. Make sure that the water doesn’t spill in any of the tests or you will have to restart the tests over.
13. Record all data on your data sheet.

Paper Towel Absorbancy

2008-10-17T17:07:00.000-07:00

Paper towels are made out of finely divided fibers of cellulose. The structural chemical in cotton, wood, and most other plants. Cotton is actually a polymer, which like any other plastic is a giant molecule consisting of many small molecules linked together in an enormous chain or treelike structure. The small molecules or monomers that make up cellulose are sugar molecules. We can't get any nutritional value out of cellulose because we don't have the enzymes necessary to split the sugars apart. Cows, on the other hand, have microorganisms in their stomachs that produce the necessary enzymes and allow the cows to digest cellulose.