pH GRADE A Q&A
Acid - (correct answer)solution containing more hydrogen ions (H+) than hydroxide ions
(OH-) (1-6 on pH scale, proton donor)
Base - (correct answer)pH above a 7 on the pH scale, more hydroxide ions(-OH) than
hydrogen ions (H+) 7.1-14 on pH scale
Cohesion - (correct answer)An attraction between molecules of the same substance
(water-water)
Adhesion - (correct answer)An attraction between molecules of different substances
Solution - (correct answer)a mixture of substances that is the same throughout.
Mixture - (correct answer)two or more substances which can be easily separated by
mechanical means, evaporation, magnetism, screening,
Solvent - (correct answer)the substance that is present in the greater amount and that
dissolves another substance/ Water is the universal one. saliva is another one
Solute - (correct answer)a substance that dissolves in a solvent. salt into water, sugar in
saliva.
pH - (correct answer)A measurement of the percent of H+ ions in a substance. Scale 1-
14 How acid a substance is
Surface tension - (correct answer)The force that acts on the surface of a liquid.
Capillary action - (correct answer)A proccess powered by adhesion that causes water
molecules to move upward through a narrow tube such as the stem of a plant.
Acid - (correct answer)solution containing more hydrogen ions (H+) than hydroxide ions
(OH-) (1-6 on pH scale, proton donor)
Base - (correct answer)pH above a 7 on the pH scale, more hydroxide ions(-OH) than
hydrogen ions (H+) 7.1-14 on pH scale
Cohesion - (correct answer)An attraction between molecules of the same substance
(water-water)
Adhesion - (correct answer)An attraction between molecules of different substances
Solution - (correct answer)a mixture of substances that is the same throughout.
Mixture - (correct answer)two or more substances which can be easily separated by
mechanical means, evaporation, magnetism, screening,
Solvent - (correct answer)the substance that is present in the greater amount and that
dissolves another substance/ Water is the universal one. saliva is another one
Solute - (correct answer)a substance that dissolves in a solvent. salt into water, sugar in
saliva.
pH - (correct answer)A measurement of the percent of H+ ions in a substance. Scale 1-
14 How acid a substance is
Surface tension - (correct answer)The force that acts on the surface of a liquid.
Capillary action - (correct answer)A proccess powered by adhesion that causes water
molecules to move upward through a narrow tube such as the stem of a plant.
