2 pH pH scale- measure of H+ ions (acidity); “power of hydrogen” #10. H + = hydronium ionOH- = hydroxide ion
3 pHacid- lots of H+ ionstaste sourfeel watery#11.
4 pHbase- lots of OH- ionstaste bitterfeel slippery#12.
5 pH neutral- equal amounts of H+ and OH- ions Ex: waterneutralize- combining an acid and a base to form water#13.
6 pH buffer- any substance that resists a change in pH Many life biological reactions have a small pH rangeExample: blood (pH 7.35 – 7.45)buffering capacity- the ability to resist a change in pH#14.#15.