Question: Jim used a solid and water to make Mixtures one (one spoon of solid in 100 milliliters water was clear with nothing on the bottom), 3 (3 spoons of solid in 100 milliliters water was clear with nothing on the bottom), 4 (4 spoons of solid in 100 milliliters water was clear with material on the bottom), and 5 (5 spoons of solid in 100 milliliters water was clear with material on the bottom) as shown below. He stirred each one and observed the results. Is the concentration of Mixture 5 less than, greater than, or the same as the concentration of Mixture 4? Explain your answer.
Reference answer: The concentrations are the same because both mixtures are saturated.

Student answer: Greater than because mixture 5 has the same amount of water with more spoons of solid.

Student answer: Greater than because it have 5 spoon of clear material.

Student answer: Mixture 5 because they have the same amount of water but mixture 5 has more spoon.

Student answer: Greater than mixture 4.

Student answer: It is the same because it has the same stuff at the bottom.

Student answer: The same because in the picture of mixture 4 and 5, they show the same salt on the bottom.

Student answer: They are the same and equal concentrated.

Student answer: Mixtures is the same concentration, because both of the mixtures are saturated.

Student answer: It is greater than because mixture 4 has more room to dissolve than mixture 5.

Student answer: The same, because both solutions have the same saturation point so they have the same concentration and amount of solid.

Student answer: The same because they both reached the saturation point.

Student answer: They are the same amount concentrated because they have the same amount of water and dissolved material.

Student answer: It is greater than because they have the same amount of water but 5 has one more spoon than 4.

Student answer: They are the same because once a solution is saturated it is at its highest level of concentration.

Student answer: The same because once a solution is saturated it is at its highest level of concentration.

Student answer: The concentration is more in 5 because it has more material in it.

Student answer: Greater than.

Student answer: They are the same because when a solution is saturated, it is at its highest point of concentration.

Student answer: They are the same because when the solution is saturated it is at its highest point of concentration.

Student answer: The same because both solutions are saturated.

Student answer: No because 5 has more scoops than 4.

Student answer: Same because if they all have the same water and 4 is concentrated with 4 scoops and 5 with 5 scoops then the solubility is the same because of the same amount of water become crystal.

Student answer: Same as mixture 4 because you cannot see them.

Student answer: Mixture 5 is greater than mixture 4 because it has the same amount of water and at the bottom it is both clear material but it does not have the same amount of solid.

Student answer: No because there is one extra spoon in 5.

Student answer: Same because they are both saturated and it can only hold an equal amount.

Student answer: Greater than because it has more scoops.

Student answer: The same because it has the same amount of water.

Student answer: Same. Because they are both saturated.

Student answer: The same because they both have the same amount of water.

Student answer: The same because once a solution is saturated it is at its greatest concentration.

Student answer: One, 2, 3 they all are clear with no material on the bottom.

Student answer: They both have material on the bottom.

Student answer: Same they both are clear and there is material on bottom.

Student answer: It is greater than because it has one more spoon of the solid.