Diffusion and Osmosis Lab

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Introduction:

Biology is the science of life and thus one of the many sciences that are part of everyday life. Diffusion and osmosis are processes that are a constant in our lives, even though many don’t realize it. Medicaments such as Fervex can be drunk only after diffusion has taken place and the powder granules have diffused into the hot cup of water. On the other hand, every day we become unintentional witnesses of osmosis when the roots of the plants try to suck up the water from the soil (1). The purpose of this lab is to show clearly in an understandable way how diffusion and osmosis happen and to help one realize the way they occur. If a cube of beat is put in hot water (5 trials – 5 temperatures: 60 ºC, 70 ºC, 80 ºC, 90 ºC, and 100ºC), then the mass of the beat cube will decrease because thanks to osmosis, water will move from the beat to the clear water outside it, because in osmosis water would move from places with low to places with high concentration of water.

Materials:

Beaker
Thermometer
Scales
Hot-plate
5 cubes of beet
Water (50 g)

Procedure:

Diagram 1.0: The diagram shows the way the eat cube was put in the water and how the trial looked like. It shows how the apparatus was used. 1.Beaker was filled with water and was put on the hot-plate. 2.Thermometer was put into the water and until it reached 60 degrees Celsius. The temperature was kept constant. 3.The beet cube was measured on the scale and put into the hot water. It stayed there for 5 minutes. 4.The color change in the water was analyzed. Any changes that the water had gone through were thoroughly described on a piece of paper. 5.The beet cube was measured on the scales and any change in the mass was written down. 6.Beaker was filled with water and was put on the hot-plate. 7.Thermometer was put into the water and until it reached 70 degrees Celsius. The temperature was kept constant. 8.The beet cube was measured on the scale and put into the hot water. It stayed there for 5 minutes. 9.The color change in the water was analyzed. Any changes that the water had gone through were thoroughly described on a piece of paper. 10.The beet cube was measured on the scales and any change in the mass was written down. 11.Beaker was filled with water and was put on the hot-plate. 12.Thermometer was put into the water and until it reached 80 degrees Celsius. The temperature was kept constant. 13.The beet cube was measured on the scale and put into the hot water. It stayed there for 5 minutes. 14.The color change in the water was analyzed. Any changes that the water had gone through were thoroughly described on a piece of paper. 15.The beet cube was measured on the scales and any change in the mass was written down. 16.Beaker was filled with water and was put on the hot-plate. 17.Thermometer was put into the water and until it reached 90 degrees Celsius. The temperature was kept constant. 18.The beet cube was measured on the scale and put into the hot water. It stayed there for 5 minutes. 19.The color change in the water was analyzed. Any changes that the water had gone through were thoroughly described on a piece of paper. 20.The beet cube was measured on the scales and any change in the mass was written down. 21.Beaker was filled with water and was put on the hot-plate. 22.Thermometer was put into the water and until it reached 100 degrees Celsius. The temperature was kept constant. 23.The beet cube was measured on the scale and put into the hot water. It stayed there for 5 minutes. 24.The color change in the water was analyzed. Any changes that the water had gone through were thoroughly described on a piece of paper. 25.The beet cube was measured on the scales and any change in the mass was written down. Data:

After heating the water at 60º C and the beet cube was put into the beaker the water slowly began to turn pink as on the layer a darker layer of the color formed. After the liquid was...
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