Question: Tabby made 2 solutions using the same solute and water. [Cup one has 6 spoons solute in 50 milliliters water. Cup 2 has 8 spoons solute in 50 milliliters water. Both solutions are clear with material on the bottom.] Which sentence below describes the concentrations of the 2 solutions? (A. The solutions in the cups have the same concentration.) B. Cup one has the more concentrated solution. C. Cup 2 has the more concentrated solution. D. There is not enough information to answer the question. Explain your choice.
Reference answer: Both solutions are saturated (as indicated by the material on the bottom) so, even though one cup has more spoonfuls of sugar, both have the same (maximum) concentration.

Student answer: If you take the same amount of water and weight it will measure to the same things.

Student answer: I chose cup 2 because it has the same water 2 has more solute.

Student answer: The solutions have the same amount of solute, there is just more on the bottom of the cup in cup 2.

Student answer: I chose A because in each cup you could put 4 spoons and it dissolved. When the fifth scoop went in it did not dissolve. The undissolved part is not part of the solution.

Student answer: Once a solution is saturated it is at its highest level of concentration.

Student answer: My choice is A because it might weigh the same and they both is saturated.

Student answer: Because both of the cups one and 2 have the same amount of concentrations because they are both saturated.

Student answer: They are the same because once a solution is saturated it cannot go further.

Student answer: I chose cup 2 because it has more solute in it.

Student answer: I picked C because cup 2 has more solute than cup one.

Student answer: Because it has more spoons of solute but it has the same amount of water.

Student answer: Because there is the same amount of solvent but there is more solute in cup 2.

Student answer: Each solution has same amount of water, which means they both hold the same amount of solute after saturation.

Student answer: Because they are both at the highest point of concentration.

Student answer: Because it is the same.

Student answer: It does not show how much dissolved and how much did not.

Student answer: Because both cup one and 2 are already concentrated. Neither cup one or 2 can hold any more solvent.

Student answer: Because Tabby said that the solute and water were the same and I believe him and it says that they both have the same thing on the bottom clear, material on the bottom.

Student answer: It clearly states that 2 has more.

Student answer: Because is look like it.

Student answer: Same water but more scoops.

Student answer: Because both looked alike to me.

Student answer: Because cup 2 have 8 spoons.

Student answer: I think that the answer is cup 2 because it has more spoons.

Student answer: Because solution 2 is more concentrate because it has more spoonfuls.

Student answer: I put C because cup 2 has more spoons of solute so it would be heavier.

Student answer: Because cup 2 has more salt, 8 spoons and because it has more material on the bottom.

Student answer: I put A because it is the same because it the same amount of water and only 2 scoops more than the other one.

Student answer: I would need to know how much stuff is at the bottom.

Student answer: Because they have the same amount of water but cup 2 has more spoons of solute.

Student answer: Both have the same because they have the same milliliters of water and they are both the same.

Student answer: Cup one might have 6 spoons of solute and cup 2 has 8 spoons and both have 50 milliliters of water.

Student answer: Cup one has less material on the bottom.

Student answer: Because cup one has the same amount of water but different amount of solute.

Student answer: The solutions both have the same amount of water, but not the same amount of clear material on the bottom. So cup one wins.

Student answer: Because both are saturated, and if you used 6 spoons for cup 2 both cups are still saturated.