Aim: How do chemists use redox reactions to produce electricity? 1.How are oxidation numbers assigned? 2.How to determine if a particle is oxidized or reduced from an oxidation-reduction reaction? 3. Distinguish between an oxidizing agent and reducing agent. 4. How is the process of oxidation/reduction utilized in electrolysis, electroplating and electrochemical cells? 5. Write and interpret half-cell reaction equations.

Aim: How do chemists use redox reactions to produce electricity? An electrochemical cell can be either voltaic or electrolytic. In an electrochemical cell, oxidation occurs at the anode and reduction at the cathode. A voltaic cell spontaneously converts chemical energy to electrical energy. An electrolytic cell requires electrical energy to produce a chemical change. This process is known as electrolysis.

Aim: How do chemists use redox reactions to produce electricity? Salt bridge- provides a path for the flow of ions between two beakers. Wire- provides a path for electrons lost during oxidation at the anode. What does LEO GER mean? What does AN OX and RED CAT mean?

Aim: How do chemists use redox reactions to produce electricity? Voltaic cell- electrochemical cell in which a spontaneous chemical reaction produces a flow of electrons. Anode- site of oxidation. Cathode- site of reduction.

Aim: How do chemists use redox reactions to produce electricity? Compare and contrast volatic/electrochemcial cells with electrolytic cells

Aim: How do chemists use redox reactions to produce electricity? Comparison of voltaic with electrolytic: Both use redox reactions. The anode is the site of oxidation. The cathode is the site of reduction. The electrons flow through the wire from anode to cathode.

Aim: How do chemists use redox reactions to produce electricity? Contrast voltaic with electrolytic cells: Voltaic/electrochemcial cells have spontaneous redox reactions; the electrolytic cell is non-spontaneous (needs a power source such as a battery.) In a voltaic cell the anode is negative and the cathode is positive; In an electrolytic cell the anode is positive and the cathode is negative.