Question: Nigel made solutions in the bottles as shown below. Solution A was 2 spoons solute in 50 milliliters water and was clear with no material on the bottom. Solution B was 4 spoons solute in 100 milliliters water and was clear with no material on the bottom. Nigel took 50 milliliters of solution from bottle A and put it in cup A and 50 milliliters of solution from bottle B and put it into cup B. He put the cups on each side of the balance. Which picture shows what would happen? A is heavier than B, B is heavier than A, (A and B are the same weight). Explain your choice.
Reference answer: The solutions have the same concentration (2 spoons in 50 milliliters is the same as 4 spoons in 100 milliliters) so the mass would also be the same.

Student answer: B has more solute than A does therefore B will weigh more since the solute is equally spread.

Student answer: They are the same amount of water different in spoons. That is why B weighs more because of spoons.

Student answer: Because you would have to take 50 milliliters of water out of cup B or else cup B would be heavier. So it would more fair.

Student answer: I chose cup A because it seems more concentrated.

Student answer: Because he pour only 50 milliliters of solution in each cup.

Student answer: Because B is the double of A.

Student answer: Because cup B has more spoons of the solute and has more water.

Student answer: Because if you just took 50 milliliters of water out of each, they would be equal. I got this one wrong.

Student answer: I think the second one because B has more scoops of solute.

Student answer: Because now there is now only some of water in each and 4 is more than 2 and cup B more concentration.

Student answer: I picked cup B because I thought it would have more spoons of solute than cup A.

Student answer: I pick this one because if you split solution B into 2 water levels it will be 50 so if A is 50 and 2 spoons the other one is going to have to have 2 spoons too because the other one is double.

Student answer: Because 2 is half of 4 spoons and 50 milliliters is half of 100.

Student answer: Because Nigel took out the same amount of solutions. There is 2 spoons for 50 milliliters of water. The concentration are the same.

Student answer: They both have 2 spoonfuls per 50 milliliters so when you compare 50 milliliters from each they both have 2 spoonfuls in the 50 milliliters.

Student answer: Because they both have the same amount of water but have different amount of salt.

Student answer: I think cup B would be more heavy because cup B is more concentrated.

Student answer: They are going to be even.

Student answer: Cup B is more concentrated than cup A.

Student answer: Because solution B has more water in the top.

Student answer: Because if he takes 50 milliliters out of A and puts it back in A it is still the same and if he takes 50 milliliters out of B and puts it back in then they are still both the same.

Student answer: They are the same, because there is a pattern, for every 2 spoons of solute add 50 milliliters of water.

Student answer: B because it gave 100 milliliters water and 4 spoons of solute. And A gave 5 milliliters water 2 spoon of salt so I stay with B.

Student answer: I chose the same because he took bottle A and half of bottle B and half of bottle B equals A.

Student answer: It is like x like 50 times 2 equals 100 so then 2 spoons of solute equals 50.

Student answer: All solutions are mixtures, and a solution is when something disappears into the other.

Student answer: Solution would need to be doubled.

Student answer: Because he took the same amount from each bottle.

Student answer: Because they both have the same amount of solution in each cup. So both cups weigh the same.

Student answer: Because there is 2 spoons and 50 milliliters and then there is 4 spoons and 100 milliliters so they are going to weigh the same.

Student answer: Because there is more water and solute.

Student answer: I chose that one because in bottle B they took 50 milliliters but in it they put 4 spoons.

Student answer: I chose this one because in the picture above there is more water in cup B.

Student answer: Solution B has more water so it weighs more than solution A.

Student answer: Cup B because it is just double.