8 of 188 of 18 Items 07:10 Question Egg Osmosis Solution (to remove shell) Egg mass (g) Initial Egg mass (g) after 24 hrs Student Observations Vinegar (Egg 1) 45 85 Shell gone; egg seemed swollen and larger Vinegar (Egg 2) 45 85 Shell gone; egg seemed swollen and larger Vinegar (Egg 3) 45 85 Shell gone; egg seemed swollen and larger Experimental Solution Egg mass (g) Initial Egg mass (g) after 24 hrs Student Observations 10% Salt Water Solution (Egg 1) 85 85 No change in egg appearance or size Kayro Syrup (Egg 2) 85 31 Egg was wrinkled and shriveled; much smaller Distilled Water (Egg 3) 85 105 Egg was larger in size; swollen and tight Introduction: Students performed an experiment using eggs to observe the effect of osmosis on cells. The egg represented a typical cell. Before beginning the experiment, students soaked the raw eggs overnight in vinegar to remove the shells. What they had in hand, then, was actually a raw, shell-less egg. Procedure: Day 1 – Students found the mass in grams of their shelled eggs, recording the mass in the data table. The eggs were placed in a beaker and covered with 200 mL vinegar to remove the shells. Day 2 – The eggs were removed from the vinegar. Visual observations were recorded. The shell-less eggs were wiped dry, massed, and the mass was recorded in the data table. The eggs were placed in a clean beaker and covered with a 10% saltwater solution. Day 3 – The eggs were removed from the saltwater and visual observations were made and recorded. The eggs were wiped dry , massed, and the mass was recorded. The eggs were placed in a clean beaker and covered with sugar (Kayro) syrup. Day 4 – The eggs were removed from the syrup and visual observations were made and recorded. The eggs were carefully wiped with a damp cloth, massed, and the mass was recorded. The eggs were placed in a clean beaker and covered with colored (red, green, or blue) distilled water. Day 5 – The eggs were removed from the water and visual observations were made and recorded. The eggs were dried, massed, and the mass was recorded. Students organized their data and made a bar graph comparing how the solutions affected their egg's (cell’s) mass. Data: One student group’s data is recorded here. Based on the data in the table, the students can conclude that which substance is hypertonic? Responses A vinegarvinegar B salt watersalt water C Kayro syrupKayro syrup D distilled waterdistilled water Skip to navigation
The hypertonic substance in this experiment is D) distilled water.
To determine which substance is hypertonic based on the given data, we need to understand the concept of hypertonic solutions.
In osmosis, a hypertonic solution refers to a solution with a higher concentration of solutes compared to another solution. When a cell (in this case, the egg) is placed in a hypertonic solution, water molecules move out of the cell causing it to shrink or shrivel.
Looking at the data, we can see that the eggs were initially soaked in vinegar to remove the shells. Then, the eggs were placed in different solutions on each day.
On Day 2, the eggs were placed in a 10% saltwater solution. The observations state that there was no change in the egg's appearance or size. This indicates that the egg's mass remained the same, suggesting that the saltwater solution is isotonic (has the same concentration) to the egg's interior.
On Day 4, the eggs were placed in Kayro syrup. The observations state that the egg was wrinkled, shriveled, and much smaller. This indicates that water has moved out of the egg, causing it to shrink. Therefore, we can conclude that Kayro syrup is a hypertonic solution.
On Day 5, the eggs were placed in colored distilled water. The observations state that the egg was dried, but the mass is not mentioned. Without the mass data, we cannot conclude if colored distilled water is hypertonic or not.
Based on the given data, the substance that is hypertonic is Kayro syrup (Option C).
To determine which substance is hypertonic based on the data provided, we need to understand the concept of osmosis and the effects it has on cells.
Osmosis is the movement of water molecules across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration. In this case, the eggs represent cells and the substances they are placed in represent different solutions.
Looking at the data table, we can see that the initial mass of the eggs before being placed in any solution is 85g. This means that the eggs are in equilibrium with their surroundings, as there is no change in mass.
When the eggs were placed in the vinegar solution, the shell was removed and the eggs appeared swollen and larger. This suggests that water from the vinegar solution entered the eggs through osmosis, causing them to absorb the water and increase in mass.
Next, when the eggs were placed in the 10% saltwater solution, there was no change in the appearance or size of the eggs. This indicates that the concentration of solutes in the saltwater solution is equivalent to the concentration of solutes inside the eggs, resulting in no net movement of water.
When the eggs were placed in the Kayro syrup solution, the eggs appeared wrinkled and shriveled, and their mass decreased significantly to 31g. This suggests that water from inside the eggs moved out to the higher concentration of solutes in the syrup solution, causing the eggs to lose water and shrink.
Finally, when the eggs were placed in the colored distilled water, they appeared larger in size, swollen, and tight. The increase in mass confirms that water from the distilled water solution entered the eggs through osmosis, causing them to absorb the water and increase in size.
Based on the observations, we can conclude that the Kayro syrup solution is hypertonic. This is because it caused the eggs to lose water and shrink, indicating a higher concentration of solutes in the syrup solution compared to the concentration of solutes inside the eggs.
Therefore, the correct response is C) Kayro syrup.