pH Scale definitions Flashcards
pH Scale definitions
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pH Scale A logarithmic scale from 0 to 14 measuring hydrogen ion concentration in solutions. Hydrogen Ion Positively charged ion whose concentration determines a solution's acidity. Hydroxide Ion Negatively charged ion inversely related to hydrogen ion concentration in solutions. Acidic Solution A solution with a pH less than 7, indicating high hydrogen ion concentration. Basic Solution A solution with a pH greater than 7, indicating low hydrogen ion concentration. Neutral Solution A solution with a pH of 7, where hydrogen and hydroxide ion concentrations are equal. Buffers Substances that resist changes in pH by absorbing or releasing hydrogen ions. Bicarbonate Buffer System A buffer system in blood using bicarbonate ions to maintain pH balance. Homeostasis The maintenance of stable internal conditions, such as pH, in living organisms. Logarithmic Scale A scale where each unit increase represents a tenfold change in concentration. Biological Processes Processes in living organisms affected by hydrogen ion concentration. Battery Acid A highly acidic substance with a pH close to 0. Lemon Juice A naturally acidic liquid with a pH around 2. Ammonia A basic substance with a pH around 11. Drain Cleaner A highly basic substance with a pH close to 14.
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