1. Dr. Brasington

2.  The smallest unit of matter that makes up an element. Elements and Atoms: 1. Matter is anything that has weight and takes up space. 2. All matter is composed of elements  2 atoms reacting with each other form chemical bonds to make molecules.

3.  Anything that cannot be broken down into a simpler substance and still retain its unique chemical properties.  Every element consists of Protons, Neutrons, and Electrons

4.  A chemical compound that ionizes when dissolved or molten to produce an electrically conductive medium. Dissociate into ca t ions and anions.  Ensure proper cellular functioning i.e. water balance.

5.  Substances that stabilize pH by either releasing hydrogen ions [H+] if the solution is too basic or absorbing hydrogen ions [H+] if the solution is too acidic  Example: Carbonic Acid (H 2 CO 3 ) in blood  H 2 CO 3 HCO 3 - + H +  If a strong acid (HCl) in placed in blood, there will be an excess of H+ and bicarbonate (HCO 3 - ) will absorb the H+ and form H 2 CO 3 (shifting the equation to the left)  If a strong base (NaOH) is placed in blood, there will be a deficiency of H+ and carbonic acid (H 2 CO 3 ) will release a H+ forming HCO 3 - + H + (shifting the equation to the right)

6. Any compound that releases hydrogen ions.

7. Accepts hydrogen ions.