2. A base in chemistry is an aqueous substance that can accept hydronium ions. BASE: ACID: An acid (from the Latin acidus/acēre me aning sour) is a substance which reacts with a base. ACIDS AND BASES

3. taste sour corrosive to metals change litmus to red become less acidic when mixed with bases. feel slippery change litmus to blue become less basic when mixed with acids

4. release a hydroxide ion into water solution. neutralize acids in a neutralization reaction. neutralize bases in a neutralization reaction. An acid and a base combine to make a salt and water. A salt is any ionic compound that could be made with the anion of an acid and the cation of a base.

5. ACIDS 1.Strong Acids completely dissociate in water forming H + and an anion. 2. Weak Acids partially dissociates in water to give H + and the anion BASES 1. Strong Bases they dissociate 100% into the cation and OH - (hydroxide ion). 2. Weak Bases do not furnish OH - ions by dissociation. react with water to furnish the OH - ions.

6. Weak acids are titrated in the presence of indicators which change under slightly alkaline conditions. Weak bases should be titrated in the presence of indicators which change under slightly acidic conditions.

7. halochromic chemical compound that is added in small amounts to a solution so that the pH (acidity or basicity) of the solution can be determined visually. Hence a pH indicator is a chemical detector for hydronium ions (H 3 O + ) or hydrogen ions (H + ) in the Arrhenius model.

8. the separation of a molecule into ions, and it is a key factor for evaluating the "strength" of acids and bases. The more a substance is prone to dissociation, the better it can conduct an electric current, because the separation of charges provides a "pathway" for the current's flow

9. the process whereby an acid and base react with one another to form a salt and water. The human stomach produces hydrochloric acid, commonly known as "stomach acid." It is generated in the digestion process, but when a person eats something requiring the stomach to work overtime in digesting it—say, a pizza—the stomach may generate excess hydrochloric acid, and the result is "heartburn." When this happens, people often take antacids, which contain a base such as aluminum hydroxide (Al[OH] 3 ) or magnesium hydroxide (Mg[OH] 2 ).