Biology Vocab 3 Week of 8/31

a mixture where all the components are evenly distributed

attraction between molecules of same substance; produces surface tension

attraction between molecules of different substances, e.g. dip in water level in graduated cylinder

a material composed of two or more elements or compounds that are physically mixed together but not chemically combined, e.g., salad

the substance that is dissolved in a solution, e.g., salt in a salt water solution

the substance in which a solute is dissolved, e.g., water in a salt water solution

mixtures of water and undissolved materials, e.g., blood

solutions with a pH below 7 (have more H+ ions than OH– ions in a solution); e.g., vinegar

solutions with a pH above 7 (have more OH– ions than H+ ions in a solution; e.g., bleach

weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH and maintain homeostasis