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Chem2 Unit 4: Oxidation, Reduction, and Electrochemistry (11 days)

Online Assessment

This assessment is available online, as DStep test prep.  

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**To find your specific code:  
1. Find the assessment in MM (Mastery Manager), 
2. Click "View", 
3. Then click "Online" from the choices
4. There are two codes.  Please write down the code with your name and section by it.   This is the code your students will need to enter. 
5. Also, please click "Activate".  
6. Click "Save" at the bottom of the page.  Your test is now ready to be taken online.  

*Students may skip a question, however, they must manually go back to find the skipped question.

*Any question that is NOT a multiple choice question, must be scored by the teacher within the Mastery Manager input function.

*Online tests are not exact replicas, the content is the same, however some of the question types have been changed.

Essential Questions

How is electricity related to chemistry?
How do batteries work?

Vocabulary

·      oxidation – a reaction in which electrons are lost, which increases the substance’s oxidation state

·      reduction – a reaction in which electrons are gained, which decreases the substance’s oxidation state

·      oxidizing agent – the substance that is reduced (and therefore causes oxidation)

·      reducing agent – the substance that is oxidized (and therefore causes reduction)

·      oxidation number – the number of electrons that must be added to or removed from an atom in a combined state to convert the atom into its elemental form

·      (Review) monatomic ion – an ion containing only one element

·      oxidation-reduction reaction (redox reaction) – a chemical change in which one species is oxidized and another is reduced

·      half-reaction – a part of a redox reaction that involves only oxidation OR reduction

·      (NOT for mastery) voltage (V) – the potential different, measured in Volts; it represents the amount of work that moving an electric charge between two points would take

·      electrochemical cell – a system containing two electrodes separated by an electrolyte phase; redox reactions occur here

·      electrode – a conductor used to establish electrical contact with a non-metallic part of a circuit

·      cathode – the electrode on whose surface reduction takes place

·      anode – the electrode on whose surface oxidation takes place

·      electrolyte – a conductive solution into which electrodes are immersed

·      salt bridge – an electrical connection between the oxidation and reduction half-cells that allows ions to travel between them, but NOT the electrolyte solutions themselves, to maintain charge balance

·      standard electrode potential (Eo) – the potential of electrochemical cells, measured in Volts cell voltage

·      (NOT for mastery) activity series – a list of substances sequenced based on their standard electrode potentials

·      galvanic cell (voltaic cell) – type of cell that changes chemical energy into electrical energy

·      electrolytic cell – type of cell that uses electrical energy to produce a chemical reaction



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  Jun 27, 2012, 9:27 AM Emilie Siverling
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