Use the PhET simulation to identify what happens to the concentrations of a dilute Drink mix mixture or a pure Drink mix solution for the following scenarios. A pure Drink mix solution can be obtained by draining all the mixture, then adding Drink mix to the container as a Solution (radio button in the upper right area of the simulation). Note that the Concentration meter can be placed toward the bottom of the container or in the stream of the Drink mix.
1. Scenario 1: Adding more water to the dilute Drink mix mixture
- When more water is added to the dilute Drink mix mixture, the concentration of the mixture will decrease. This is because the amount of Drink mix stays the same, but the total volume of the solution increases, resulting in a lower concentration of Drink mix.
2. Scenario 2: Evaporating some of the water from the dilute Drink mix mixture
- When some of the water is evaporated from the dilute Drink mix mixture, the concentration of the mixture will increase. This is because the amount of Drink mix stays the same, but the total volume of the solution decreases, leading to a higher concentration of Drink mix in the remaining solution.
3. Scenario 3: Adding more Drink mix to the dilute Drink mix mixture
- When more Drink mix is added to the dilute Drink mix mixture, the concentration of the mixture will increase. This is because the amount of Drink mix in the solution increases while the total volume of the solution remains the same, resulting in a higher concentration of Drink mix in the mixture.
4. Scenario 4: Draining all the mixture and adding a pure Drink mix solution
- When all the mixture is drained and a pure Drink mix solution is added to the container, the concentration of the solution will be equal to the concentration of the pure Drink mix solution. This is because there are no other substances present in the solution, so the concentration of Drink mix will be at its highest level.