The Amazing World of Solutes, Solvents and Solutions
NoteWhat This Chapter Covers
Every sip of ORS tastes the same — because it is a solution, a uniform mixture where one substance vanishes evenly into another. This chapter names the players (solute, solvent, solution), asks how much will dissolve (saturation and solubility) and how temperature changes the answer — differently for solids and for gases. Then it tackles the everyday mystery of floating and sinking by introducing density (mass ÷ volume): how to measure it, why it falls when things heat up, and the curious reason ice floats on water.
Learning Outcomes
By the end of this chapter, you will be able to:
- identify the solute, solvent and solution in a mixture;
- distinguish saturated from unsaturated solutions and define solubility and concentration;
- explain how temperature raises the solubility of most solids but lowers that of gases;
- define density as mass per unit volume, calculate it, and use it to predict floating or sinking;
- measure mass (balance) and volume (measuring cylinder, displacement) and explain why ice floats.