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Solutions quiz

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  • What is a solution in chemistry?
    A solution is a homogeneous mixture made up of two or more components that form a uniform composition.
  • What is the solute in a solution?
    The solute is the smaller portion of the solution that is dissolved within the solvent.
  • What is the solvent in a solution?
    The solvent is the part of the solution present in the larger amount and is capable of dissolving other substances.
  • How is concentration defined in the context of solutions?
    Concentration is a measurement of the amount of solute present in a given solution.
  • What does it mean for a mixture to have a uniform composition?
    A uniform composition means everything is mixed perfectly together and you cannot distinguish different parts.
  • What is a suspension?
    A suspension is a heterogeneous mixture with large solute particles that can float and may eventually settle.
  • What is a colloid?
    A colloid is a homogeneous mixture with intermediate-sized particles that remain suspended and do not settle.
  • How do the particle sizes in suspensions compare to those in colloids?
    Suspension particles are larger than 500 nanometers, while colloid particles are less than 500 nanometers.
  • Why do suspension particles eventually settle?
    Suspension particles are larger, so they eventually settle due to gravity, depending on the density of the solvent.
  • Do colloid particles settle over time?
    No, colloid particles do not settle; they remain suspended within the solvent.
  • Give an example of a suspension.
    Italian salad dressing is an example of a suspension because you can see particles floating in the liquid.
  • Give an example of a colloid.
    Milk is an example of a colloid, with fat and protein particles suspended throughout the liquid.
  • What happens when a solute dissolves in a solvent?
    When a solute dissolves in a solvent, they form a homogeneous solution where the solute is evenly distributed.
  • How can you visually distinguish a suspension from a solution?
    In a suspension, you can see the particles floating or settling, while in a solution, everything looks uniform.
  • What are the three main types of mixtures discussed in this lesson?
    The three main types are solutions, suspensions, and colloids.