Ph Assessment Practice
Questions And Correct
Answers GRADED A+
2025-2026
Acid - ANS-is traditionally regarded as any chemical compound which, when dissolved
in water, produces a solution with a higher hydronium cation activity than pure water,
ie a pH less than 7.
Base - ANS-In chemistry, bases are substances that, in aqueous solution, are slippery to
the touch, taste astringent, change the color of indicators (e.g., turn red litmus paper
blue), react with acids to form salts, promote certain chemical reactions (base
catalysis).
Neutral. - ANS-A substance that is neither acidic nor basic is neutral. The pH scale
measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of
7 is neutral.
H30+ - ANS-In chemistry, hydronium is the common name for the aqueous cation
H3O+, the type of oxonium ion produced by protonation of water. It is the positive ion
present when an Arrhenius acid is dissolved in water, as Arrhenius acid molecules in
solution give up a proton (a positive hydrogen ion, H+) to the surrounding water
molecules (H2O).
H+ - ANS-pH is a measure of the hydorgen ion concentration of a solution. Solutions
with a high concentration of hydrogen ions have a low pH and solutions with a low
concentrations of H+ ions have a high pH. This may seem like a confusion way to
express these reationships, and it is, until you understand what pH stands for.
pH scale - ANS-Mixing acids and bases can cancel out or neutralize their extreme
effects. A substance that is neither acidic nor basic is neutral. The pH scale measures
Questions And Correct
Answers GRADED A+
2025-2026
Acid - ANS-is traditionally regarded as any chemical compound which, when dissolved
in water, produces a solution with a higher hydronium cation activity than pure water,
ie a pH less than 7.
Base - ANS-In chemistry, bases are substances that, in aqueous solution, are slippery to
the touch, taste astringent, change the color of indicators (e.g., turn red litmus paper
blue), react with acids to form salts, promote certain chemical reactions (base
catalysis).
Neutral. - ANS-A substance that is neither acidic nor basic is neutral. The pH scale
measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of
7 is neutral.
H30+ - ANS-In chemistry, hydronium is the common name for the aqueous cation
H3O+, the type of oxonium ion produced by protonation of water. It is the positive ion
present when an Arrhenius acid is dissolved in water, as Arrhenius acid molecules in
solution give up a proton (a positive hydrogen ion, H+) to the surrounding water
molecules (H2O).
H+ - ANS-pH is a measure of the hydorgen ion concentration of a solution. Solutions
with a high concentration of hydrogen ions have a low pH and solutions with a low
concentrations of H+ ions have a high pH. This may seem like a confusion way to
express these reationships, and it is, until you understand what pH stands for.
pH scale - ANS-Mixing acids and bases can cancel out or neutralize their extreme
effects. A substance that is neither acidic nor basic is neutral. The pH scale measures
