1 / 9

Chem Catalyst

Chem Catalyst. How is an ion formed?. Today’s Agenda:. Do Now Intro: New Chapter Notes- Oxidation & Reduction Practice Worksheet. New Topic: Electrochemistry. Chapter 20 (and some Chapter 21) Oxidation and Reduction Writing Redox Reactions Voltaic cells/batteries.

aurora
Download Presentation

Chem Catalyst

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chem Catalyst How is an ion formed?

  2. Today’s Agenda: • Do Now • Intro: New Chapter • Notes- Oxidation & Reduction • Practice Worksheet

  3. New Topic: Electrochemistry Chapter 20 (and some Chapter 21) • Oxidation and Reduction • Writing Redox Reactions • Voltaic cells/batteries

  4. Oxidation Reactions • Originally defined as combining the element with oxygen • Now defined as loss of electrons (shift of electrons away from an atom) • Charge becomes more positive (increases)

  5. Reduction Reactions • Originally defined as removing oxygen from a compound with the element • Now defined as gain of electrons (shift of electrons toward an atom) • Charge becomes more negative (charge decreases) • Occurs alongside an oxidation reaction

  6. Redox Reactions • A reaction that includes oxidation and reduction • The substance that gains electrons is reduced • The substance that loses electrons is oxidized • “LEO the lion goes GER” • Losing Electrons is Oxidation; Gaining Electrons is Reduction

  7. Redox Reactions: Practice Identify the element being reduced and the element being oxidized: Hint: break apart the ionic compounds 2AgNO3 + Cu  Cu(NO3)2 + 2Ag *Identify the oxidizing agent and the reducing agent

  8. Redox Reactions: Practice Identify the element being reduced and the element being oxidized: 2Na + Br2 2NaBr

  9. Applications of Redox: • Some metals (gold, platinum) are not easily oxidized • Iron is oxidized by oxygen, causing corrosion • Can be coated w/ aluminum, whose oxide does not corrode • Connect to an easily oxidized metal (zinc, magnesium) which will transfer electrons to iron

More Related