Osmosis
1. The fluid in the thistle tube is hyperonic.
2. The fluid in the beaker is hypotonic.
3. Over time, water will move into the thistle tube.
Water moved into
the thistle tube
causing the fluid to
rise
Thistle tube contains
Distilled water and molasses
Semipermeable membrane
separates the solutions
Beaker contains
distilled water
over time:
Filtration
Diffusion
Dialysis
• Glucose moved out of the dialysis tubing.
• Benedicts solution tests for the presence of glucose.
• Test tube A is positive for glucose.
• Test tube B is negative for glucose.
A.
B.
Dialysis
• Sodium Chloride (NaCl) moved out of the dialysis tubing.
• Silver nitrate (AgNO₃) tests for the presence of NaCl.
• Test tube A is positive for NaCl.
• Test tube B is negative for NaCl.
A.
B.
Dialysis
• Albumin (protein) did not move out of the dialysis tubing.
• Biurets solution tests for the presence of proteins.
• Test tube A is positive for protein.
• Test tube B is negative for protein.
A.
B.
Dialysis
• Starch did not move out of the dialysis tubing.
• Potassium Iodide (KI) tests for the presence of starch.
• Test tube A is positive for starch.
• Test tube B is negative for starch.
A.
B.