research paper from 9th grade
Mercedes Serio 8th
Gummi Bear Osmosis Problem Will soaking a Gummi bear in different solutions affect the size and/or mass of the Gummi Bear?
Hypothesis
If osmotic solutions changes, then the mass will change because water will defuse until it is equally defused.
Materials
1. (1) Gummi Bear
2. (1) plastic cup (9oz)
3. (1) aluminum screen (4”x4”)
4. Distilled water
5. Centimeter ruler
6. Saturated salt solution
7. Paper towels
8. Triple beam balance
9. Permanent marker
Procedure
1. Obtain one plastic cup and gummi bear.
2. On the side of the cup, write your name and class period using a permanent marker.
3. Measure your bear (in cm) from top to bottom (length), from side to side (width), and from front to back (height). Use your measurements to calculate the approximate volume. Record your data in the data table.
4. Measure the mass of the bear and record that in your data table.
5. Place the bear in the cup and cover it with distilled water. Pour just enough water in the cup to fully cover the bear and no more (about 1”).
6. Place your cup on the side lab table away from direct sunlight. Let it soak overnight.
7. On the next lab day, gently pour the water from your cup over an aluminum screen into a sink.
8. While on the screen, measure the height, width and length of your bear. Calculate the volume, record data.
9. Bolt the screen dry by placing it on a paper towel.
10. Find the mass of the bear. Do this by placing the entire screen with the bear on the balance. Record the total mass of the bear. VERY carefully slide the bear back into the empty cup.
11. Next, find the mass of the screen alone. Calculate the mass of the bear. Record.
12. Cover the bears with saturated salt solution (about 1’). Let this sit overnight .
13. On the third lab day find the mass and
Gummi Bear Osmosis Problem Will soaking a Gummi bear in different solutions affect the size and/or mass of the Gummi Bear?
Hypothesis
If osmotic solutions changes, then the mass will change because water will defuse until it is equally defused.
Materials
1. (1) Gummi Bear
2. (1) plastic cup (9oz)
3. (1) aluminum screen (4”x4”)
4. Distilled water
5. Centimeter ruler
6. Saturated salt solution
7. Paper towels
8. Triple beam balance
9. Permanent marker
Procedure
1. Obtain one plastic cup and gummi bear.
2. On the side of the cup, write your name and class period using a permanent marker.
3. Measure your bear (in cm) from top to bottom (length), from side to side (width), and from front to back (height). Use your measurements to calculate the approximate volume. Record your data in the data table.
4. Measure the mass of the bear and record that in your data table.
5. Place the bear in the cup and cover it with distilled water. Pour just enough water in the cup to fully cover the bear and no more (about 1”).
6. Place your cup on the side lab table away from direct sunlight. Let it soak overnight.
7. On the next lab day, gently pour the water from your cup over an aluminum screen into a sink.
8. While on the screen, measure the height, width and length of your bear. Calculate the volume, record data.
9. Bolt the screen dry by placing it on a paper towel.
10. Find the mass of the bear. Do this by placing the entire screen with the bear on the balance. Record the total mass of the bear. VERY carefully slide the bear back into the empty cup.
11. Next, find the mass of the screen alone. Calculate the mass of the bear. Record.
12. Cover the bears with saturated salt solution (about 1’). Let this sit overnight .
13. On the third lab day find the mass and