DUE MONDAY, NOVEMBER 19, 2012!
This week’s lab dealt with metals and their relative reactivities. There are a series of questions you will have to answer at the end of the lab and there are certain understandings that all students must have. You have a choice of the way in which you will demonstrate your knowledge and understanding to me. If you would like to include pictures from the lab, you may take photos during lab.
ALL STUDENTS WILL PRESENT THEIR PROJECTS TO THE CLASS.
Your choices are
A poster or ½ size poster
- Posters are visual! You must have images, color and easy-to-read words!
- Posters must be aesthetically pleasing
- Poster may be regular size or ½ size
A PowerPoint Presentation
- Remember, it’s called PowerPoint, not PowerParagraph! Get the information out without too many words. Get to the POINT!
- While animations are fun, please avoid too many “gimmicks.” I am interested in your lab understanding, not how many ways you can insert an animation into a presentation!
- Email me the PowerPoint or bring it on a flashdrive on Monday. firstname.lastname@example.org
A formal lab report
- Use section headings
- Do NOT answer questions one by one; answer in narrative or paragraph form
- Type your information
- Format guidelines will be provided on request
Here are the questions you will have to answer and the points they are worth.
|SECTION HEADING||REQUIREMENTS||ESTIMATED POINTS||QUESTION(S)|
|Question||Required||2||What were you trying to find out in this lab?|
|Materials and procedure||Answer all of these; can be paragraph or one by one||5||What substances did you test?|
|How did you test them?|
|What other materials did you use?|
|What did you do in the lab? (What procedure did you follow?)|
|What were safety precautions in the lab?|
|Results||Answer/include all of these, can be paragraph or one by one||10||Include a copy of your data table or summary of your data|
|Which metal reacted with the most solutions?|
|Which metal reacted with the fewest solutions?|
|List the metals (including silver) in order, with the most reactive metal first and the least reactive metal last.|
|Analysis||Answer at least 5 questions from this section||10||* Why does a metal form an ion?|
|* When an atom is converted to an ion, what exactly is happening?|
|* Do metals usually give up electrons to form positive ions (cations) or steal electrons to form negative ions (anions)?|
|* If two metals are in the same place, which will end up in the ionic form – the more reactive metal or the less reactive metal?….|
|* What was the silver substance that was produced when you added silver nitrate to copper metal? Explain how you know.|
|* Where would these go? Add iron, aluminum and gold to the activity series list!|
|Conclusion||Answer at least 3 from this section||15||* Pennies look like copper, but they are actually made of 97% zinc and only coated with copper. Why? Use information from the lab in your answer. And suggest a "what if" scenario.|
|* Which our the metals in our lab is most likely to be found in nature in an uncombined state (pure elemental form)? Which metal is most likely to be found in chemically combined with others? Why?|
|* PREDICT: Will iron (Fe) metal react with a solution of lead (II) nitrate Pb(NO3)2? Will platinum (Pt) metal react with a solution of lead (II) nitrate Pb(NO3)2? Explain your reasoning. Write out the chemical equations.|
|* Gold was one of the first elements named. Given the results of the lab, why do you think this is so?|
|* What are ores, and what do they have to do with this lab? Provide at least once connection to something we learned in class or lab. Give background research and include economics and chemistry.|
|* What is a single displacement reaction? Provide at least two examples from this lab. Make sure the equations are balanced. It would be nice to write them in words as well as symbols.|
|* Historical evidence indicates that humans have been using copper for nearly 10,000 years, but we have only been using aluminum for about 100 years. Why is this?|
|* Which metals might be even better than copper to use as a coin, and why? Why aren't all of them used in daily currency?|
|Take it to the next level!||Optional questions; answer any, all, or none; must research and cite at least one reference||Variable points; bonus||* This lab dealt with single displacement reactions. Define, describe and provide balanced chemical reactions for all the examples we did in lab.|
|* It takes at least 90% less energy to make a can from recycled metal than to make it from a metal ore. Research and describe the ore refining process and the metal recycling process. Compare and contrast to support why recycling is in many ways a much better use of resources.|
|* Aluminum metal is often used in containers for acidic beverages like pop. What chemistry or technology makes this possible? Explain it.|
|* Although aluminum is more reactive than iron, it is often used for outdoor products. Explain how this is possible and why it is a good idea.|
|* What metals and compound are in fireworks? How do their chemical properties affect their ability to make fireworks happen?|
|Presentation points||8||You must present your project to class. All formats will be assessed based on knowledgeof the presenter and flow of the presentation. Additionally, posters will be assessed on neatness and aesthetics, PowerPoints on effective presentation of information and lab reports on formal nature and organization.|