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Acids and Bases quiz

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  • What do acids do to the concentration of hydrogen ions (H+) in a solution?
    Acids increase the concentration of hydrogen ions (H+) in a solution.
  • How is the concentration of hydrogen ions represented in scientific notation?
    It is represented as [H+], where the brackets indicate concentration.
  • What happens to hydrochloric acid (HCl) when it is added to water?
    HCl dissociates into hydrogen ions (H+) and chloride ions (Cl-).
  • What is the effect of bases on the concentration of hydrogen ions in a solution?
    Bases decrease the concentration of hydrogen ions in a solution.
  • What does sodium hydroxide (NaOH) dissociate into when added to water?
    NaOH dissociates into sodium ions (Na+) and hydroxide ions (OH-).
  • How do hydroxide ions (OH-) from a base affect hydrogen ions in solution?
    Hydroxide ions react with hydrogen ions to form water, reducing the hydrogen ion concentration.
  • Why is the concentration of hydrogen ions important in biological systems?
    It strongly affects many biological processes.
  • What does the presence of brackets around H+ mean in scientific notation?
    It means the concentration of hydrogen ions.
  • What is a classic example of an acid discussed in the lesson?
    Hydrochloric acid (HCl) is a classic example of an acid.
  • What is a classic example of a base discussed in the lesson?
    Sodium hydroxide (NaOH) is a classic example of a base.
  • What do acids and bases have in common regarding hydrogen ions?
    Both directly affect the concentration of hydrogen ions in solution.
  • What happens to the number of hydrogen ions when HCl is added to pure water?
    The number of hydrogen ions increases.
  • What happens to hydrogen ions when NaOH is added to water?
    Hydrogen ions interact with hydroxide ions to form water, decreasing their concentration.
  • How can you identify a substance as an acid based on its effect on [H+]?
    If it increases [H+], it is an acid.
  • How can you identify a substance as a base based on its effect on [H+]?
    If it decreases [H+], it is a base.