Make a Carrot Battery This activity uses a common carrot and two different metals to make a enough electricity to run a small digital clock. Materials: Two Large Raw Carrots; 2 Pennies; 2 Large Galvanized Nails; 3 pieces of 6" long wire; Small Digital Clock (Tandy (Radio Shack) or Maplin - "Stick-on Timer" £3.50/ $4.99. The digital clock can be extracted from an inexpensive alarm clock or it can be purchased from an electronics store. Slice of about 1 inch from each carrot and discard. Place
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Cited: “2011 Annual Report.” Rep. United States Mint‚ Fall 2011. Web. 14 June 14‚ 2013. . Carroll‚ Joseph. "Penny Worth Saving‚ Say Americans." Gallup. Gallup‚Inc.‚ 17 July 2006. Web. 14 June 14‚ 2013. Hagenbaugh‚ Barbara. "A Penny Saved Could Become a Penny Spurned." USA Today. Gannett‚ 06 July 2006. Web. 14 June 14‚ 2013. Isidore‚ Chris Isidore. "Obama Wants Cheaper Pennies and Nickels." CNNMoney. Cable News Network‚ 15 Feb. 2012. Web. 14 June 14‚ 2013 Jacobe‚ Dennis. "Food Prices a Hardship
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say that I learned a lot from a chemistry class‚ and it will benefit me later in life. In this class‚ we learned a lot of tricks‚ but three of them were more interesting and important to me‚ dry ice and hot water‚ revealing fingerprints‚ and shiny pennies. The dry-ice demonstration was the best one that I’ve experimented‚ and I think it’s a great reaction to be used in multiple situations. First of all‚ dry ice is frozen carbon dioxide.(Pangler) Instead of melting‚ dry ice turns directly into carbon
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Amplifier DC Voltmeter in a Digital Multimeter Copper Coins and Zinc-Galvanized Nails Procedure: 1. Set the multimeter to the “2V” (direct current) range. Turn it on. 2. To measure its voltage‚ insert the black and red probe to the potato. To increase the voltage‚ inject a coin and a zinc-galvanized nail to the said fruit‚ and connect it to the multimeter using the alligator clips‚ have the black probe to the zinc-galvanized nail while the red probe to the copper coin. 3. Read the value. b. Lighting
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Chemists often deal with percent problems. As long as you remember that percent refers to per 100‚ these problems can be solved. 1. A penny minted after 1982 is composed of copper and zinc only. If a penny has a mass of 2.507 g and is 2.50 % copper. What is the mass of zinc in the coin? (5 pts) 2.507 g x 2.50/100 = 0.062675 g of Cu 2.507 g of penny - 0.062675 g of Cu = 2.444325 g = 2.444 g of Zn (2.44 g of Zn is correct also) D. Density
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(automobiles)‚ packaging‚ building/construction‚ electrical‚ machinery and other uses. The U.S. was 100 percent import reliant for its aluminum in 2012. Barium A heavy metal contained in barite. Used as a heavy additive in oil well drilling; in the paper and rubber industries; as a filler or extender in cloth‚ ink and plastics products; in radiography ("barium milkshake"); as a deoxidizer for copper; a sparkplug in alloys; and in making expensive white pigments. Clays Used in floor and wall tile
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The Science of the Spud — a History of the Potato Battery Experiment There are hot potatoes‚ french fried potatoes‚ baked potatoes and scalloped potatoes. There are potato chips‚ potato pies and potato soufflés. Last‚ but not least‚ there’s the potato battery. Who on earth invented the electric spud? Why does it work? For that matter‚ why would anyone want to see if a potato could conduct electricity in the first place? Well‚ we may never be able to answer some of the questions this quirky experiment
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substance that neutralizes alkalis‚ dissolves some metals‚ and turns litmus red; typically‚ a corrosive or sour-tasting liquid of this kind. How does acid clean copper- “The oxygen in the air and the copper in the pennies form an oxide that coats the pennies and makes them look dirty. The acids break the copper oxide free from the penny. As we have seen experimentally‚ acid alone does not clean as well as acid and salt.” Can acid kill you?-”The actual causes of death however are not always from the
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IHOP was not always a multinational conglomerate. It is now one of the nations leading sit down‚ cheap restraint chains. With over 1‚000 locations world wide it is a commonly known restraint. As of recent IHOP has had a 52-week high of 39.4 and a low of 27.04. Recently‚ IHOP rang the bell of the NYSE in celebration of the kick-off of the National Pancake Day (March 4) and the launch of a brand rejuvenation strategy for IHOP‚ which celebrates its 45th year in business this July. In honor of the occasion
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LEMON BATTERY: A PRACTICAL ALTERNATIVE Thesis Statement: Lemon is a kind of voltaic battery that contains citric acid that could generate LED; digital clocks; calculators; small devices and among others sufficiently like ordinary batteries‚ economically. OUTLINE: I. Basic Information About Lemon Battery A. What Is Battery? B. Definition Of Lemon C. History Of Lemon D. History Of Lemon Battery E. Definition Of Lemon Battery F. Lemon Battery
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