4 Acids (0-7)A compound that produces hydronium (H30+) ions when dissolved in H20Example: HCl + H20 H30+ + Cl-Sour taste, react with metals, produce color changes in indicatorsExamples: fruit, shampoo, vinegar
5 Bases (7-14)A compound that produces hydroxide ions (OH-) when dissolved in H20Example: NaOH + H2O Na+ + OH-Bitter taste, slippery feel, produces color changes in indicators.Example: deodorant, Tums (antacid), soap
6 Neutralization The rxn of acid + base Example: H+ + OH- H20 Neutral substances will not produce color changes in indicators.
7 Neutralization and Salts The negative ions of an acid combine with the positive ions of a base to produce an ionic compound called a salt.The neutralization reaction between acid and base produces a salt and water.(H3O+ + Cl-) + (Na+ + OH-) 2HOH + (Na+ + Cl-) acid base water salt
8 Indicators Something that indicates the pH of a solution or substance Examples:Natural (some flowers, cabbage juice, red onion juice)pH paper (Litmus blue or red, universal)