This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: ions and hydroxide ions Acid : molecules that release hydrogen ions (H + ) when dissolved in water- acids are hydrogen ion (proton) donors Base : molecules that release hydroxide (OH-) ions , or increase the number of hydroxide ions available, when dissolved in water- bases are hydrogen ion (proton) acceptors Salt : ionically-bonded molecule that dissociates into cations & anions in solution- in the body, salts are electrolytes that conduct electricity (important for nerve & muscle cells) & provide essential chemical elements in body fluids (blood, lymph & interstitial fluids) Buffers : maintain stable pH of solution (resist changes in pH)- Buffers can take up excess hydrogen or hydroxide ions- Buffers have acidic and basic components- Blood uses carbonic acid (acidic) bicarbonate ion (basic) buffer system- normal pH of blood is between 7.35 & 7.45- Bicarbonate ions take up added hydrogen ions, and carbonic acid takes up excess hydroxide ions...
View Full Document
- Fall '10