1. Chemistry Goal 10

3.  Substances can be classified as acid, base, or neutral based on their pH.  Acids and bases are solutions usually with water as a solvent.

4.  Can be identified by: ◦ Sour taste ◦ Reacts with some metals ◦ Reacts with bases to form a neutral pH solution ◦ pH is less than 7; the lower the number, the more acidic the solution

5.  Can be identified by: ◦ Bitter taste ◦ Slippery feel ◦ Reacts with acids to form a neutral pH solution ◦ pH is greater than 7; the higher the number, the more basic the solution.

6.  Is neither an acid nor a base  Pure water is neutral and has a pH near 7

7.  Substances that can be used to determine whether a solution is acidic, basic, or neutral.

8.  Changes color in the presence of an acid or a base  Blue litmus paper turns red in an acid and stays blue in a base. ◦ BRA  Red litmus paper turns blue in a base and stays red in an acid. ◦ RBB

10.  Test for a base ONLY  Is colorless and turns magenta (bright pink) in the presence of a base  Stays colorless in acidic and neutral solutions

11.  Has a range of colors depending on the pH of the solution  The color of the paper is compared to a chart to determine the actual pH number.

12. A = ______ B = ______ C = ______ D = ______

13. Zoom Kitchen Lab from Friday