Acids and Bases pH Scale Marine Biology. Warm Up What is the pH scale? What is the difference between an acid and a base? What is neutral? How are enzymes.

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Presentation transcript:

Acids and Bases pH Scale Marine Biology

Warm Up What is the pH scale? What is the difference between an acid and a base? What is neutral? How are enzymes effected by pH?

Acids and Bases The pH scale ranges from 0 – 14 Acid – donates H+ when added to aqueous solutions Ranges from pH Base – breaks up into hydroxide (OH-) ions and another compound when placed in an aqueous solution Ranges from pH 7 – 14 Neutral- pH of 7 Distilled water is pH 7.0 or. Why? H 2 O H+ + OH- pH Scale Video

Acids and Bases Buffers – compounds used to maintain a contant pH within a system H 2 CO 3 H + + HCO 3 - Carbonic acid bicarbonate ion

Acids and Bases Acid Rain is caused by pollution. Chemicals are released into the air by factories, cars etc. When it rains, these chemicals drop to the earth and make the rain water more acidic. After watching the video, be ready to explain how acid rain effects living organisms.video

Enzymes and pH Enzymes are special proteins that speed reaction rates. Enzymes are designed to work in a certain pH and temperature. Enzyme Video

Review Pages Add to your notes to answer the following questions: Is ocean water acidic or basic? Why? How is acid rain formed? Why is it that ocean water is less effected by acid rain?