Here are the correct matches between Column A and Column B:
- Concentration - a. The amount of one substance in a certain volume of another substance.
- Saturated Solutions - b. A solution with as much dissolved solute as it can hold at a given temperature. No more solute can be dissolved.
- Unsaturated Solution - d. A solution that holds less solute than is possible at a given temperature. More solute can dissolve.
- Supersaturated Solution - c. A heated solution that holds more dissolved solute than is possible at a lower temperature.