Chapter 7 Solutions: Water as the Universal Solvent
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Questions and Answers

What is the difference between a solution and a suspension?

  • In a solution, the solute dissolves completely, while in a suspension, the solid remains visible. (correct)
  • A solution is formed when a solid dissolves in a liquid, while a suspension is formed when a liquid dissolves in a solid.
  • A solution is a mixture of two gases, while a suspension is a mixture of a solid and a liquid.
  • Solutions and suspensions are the same thing, just different names for the same process.

    • What is the term used for the substance that dissolves in a solution?

  • Solvent
  • Suspension
  • Solute (correct)
  • Insoluble

    • How does the temperature of the liquid affect the amount of solute that can dissolve?

  • The effect of temperature on solubility depends on the specific solute and solvent.
  • Temperature has no effect on the amount of solute that can dissolve.
  • Higher temperatures generally allow more solute to dissolve. (correct)
  • Lower temperatures generally allow more solute to dissolve.

    • What happens to the solute molecules when they dissolve in the solvent?

    <p>They are broken up into individual molecules surrounded by solvent molecules.</p> Signup and view all the answers

    Which of the following is an example of a solute mentioned in the text?

    <p>Sugar</p> Signup and view all the answers

    What term is used to describe a substance that will not dissolve in a liquid?

    <p>Insoluble</p> Signup and view all the answers

    Study Notes

    Solutions and Solubility

    • A solution is produced when a solid dissolves in a liquid, and the solid spreads out in minute particles throughout the liquid.
    • The amount of solid that will dissolve in a liquid depends on the amount of liquid used and the temperature of the liquid.
    • A solution consists of two substances: solute (the substance that dissolves) and solvent (the substance that dissolves the solute).

    The Process of Dissolution

    • When a solid dissolves, it breaks up from a large group of molecules into individual molecules.
    • The solvent molecules surround the individual molecules, making them no longer visible.

    Examples of Solvents and Solutes

    • Water is a universal solvent, capable of dissolving a wide range of substances.
    • Fats and oils do not dissolve in water and are not considered aqueous solutions.
    • Sugar is an example of a solute that dissolves in water to form a sugar solution.
    • Carbon dioxide is an example of a gas that can dissolve in a solvent.

    Solubility

    • A substance that dissolves is said to be soluble.
    • A substance that does not dissolve is insoluble.
    • Solubility depends on the properties of the solute and solvent, as well as the conditions of the solution (e.g. temperature).

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    Description

    Explore the concept of solutions in Chapter 7, focusing on why water is referred to as the universal solvent. Learn about the difference between solutions and suspensions when mixing solids with liquids.

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