anatomy ch 2 pt 2

mixture

consist of substances that are physically blended but not chemically combined; each substance retains its own chemical properties

solvency

ability to dissolve other chemicals

hydrophilic

substances that dissolve in water

hydrophobic

substances that don’t dissolve in water

t or f: to be soluble in water, a molecule must be polarized or charged

true

adhesion

tendency of one substance to cling to another

cohesion

tendency of molecules of the same substance to cling to each other

chemical reactivity

ability to participate in chemical reactions

solution

consists of particles called the solute mixed with a more abundant substance (usually water) called the solvent

acid

proton donor; releases H+ ions in water

base

proton acceptor; accepts H+ ions or releases OH ions in water

acidity is measured by

pH scale

buffers

chemical solutions that resist changes in pH