"Cleaning copper pennies" Essays and Research Papers

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    What Is A Chemical Change

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    A Chemical change is any change that results in the formation of a new chemical substance. It is something that everyone learns about in school‚ but never really tries to see it in the real world. We all know the basic examples; baking a cake‚ burning wood… etc. What about the examples that are happening around us. For example‚ the Statue of Liberty has been through a chemical change. It was first a dull brown color‚ and now it is a green color. That happened due to a chemical change. During the

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    Density Lab Report

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    Hypothesis I think the 1st cube was aluminum I think the 2nd cube was steel I think the 3rd cube was brass I think the 4th cube was copper I think the 5th cube was acrylic I think the 6th cube was oak I think the 7th cube was pvc I think the 8th cube was pine I think the 9th cube was poplar I think the 10th cube was nylon Materials Aluminum Steel Brass Copper Acrylic Oak Pvc Pine Poplar Nylon Ruler Triple beam balance Calculator Writing Utensil Method 1) Thought of my hypothesis

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    Potato Battery

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    the way things work in a battery by using everyday items we see around the house. The goal is to learn more about electricity‚ and possibly a few new science terms along the way. III Materials: * Two Potatoes * Two short pieces of heavy copper wire * Two common galvanized nails * Three alligator clip/wire units (alligator clips connected to each other with wire) * One simple low-voltage bulb with bulb socket IV Procedure: 1. Remove the battery from the battery compartment

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    Chapter 1 The Problem-And It’s Background Potato as an alternative battery for scientific calculator is the chosen topic of the researchers. The researchers thought of many topics but the topic about the scientific calculator get their attention. They thought that scientific calculator is very useful to students especially to 4th year students. A scientific calculator is a type of electronic calculator‚ designed to calculate problems in science‚ engineering‚ and mathematics. They have

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    My Identity Narrative

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    Our first house. Kimie uses the ovens to make cookies. I’ve bought her a grey kitten who plays in the hallway while she bakes. 4 I’ve showered three times but still stink. Submarines. Everything is saturated with the mingled stink of fish‚ and pennies held in a sweating palm. Some smell vomit and ozone‚ and the locker room. It’s funny what you get used to. All my clothing is still in the garage. It will

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    Science POTATO BATTERY: THE ADVENT OF TECHNOLOGY TABLE OF CONTENTS RESEARCH……………………………………………………………………...I PURPOSE……………………………………………………………….….……II DISCUSSION………………………………………………………………...…IV MATERIALS AND PROCEDURES……………………………………….......V RESULTS…………………………………………………………………....….VI CONCLUSION……………………………………………………….….….…VII BIBLIOGRPAHY……………………………………………………….….……VIII RESEARCH The potato is a starchy‚ tuberous crop from the perennial Solanum tuberosum of the Solanaceae

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    favorite because it helps demonstrate how the galvanic cells that make up a car battery work. Some batteries use galvanic cells to transfer chemical energy into electric energy. They depend on two metals‚ a cathode or positive terminal (such as copper) and an anode or negative terminal (such as zinc). These are placed in an electrically conductive solution that allows ions to travel freely between the two metals. The solution is typically an acid. Car batteries use sulfuric acid‚ but potatoes contain

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    To begin this experiment‚ I purchased and gathered all my materials together. The materials I have include: Graphite‚ Apatite‚ Muscovite‚ Halite‚ Amethyst‚ Opal minerals. Also I have Glass‚ sand paper‚ knife‚ Emery board / steel knife‚ and copper penny to perform the scratch test with put all the materials

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    acid is frequently used as a demonstration because it occurs naturally in citrus fruits. The two metals often used are zinc‚ as in a galvanized nail‚ for the anode and copper‚ as in a penny‚ for the cathode. A lemon can be used as both the container and the source of citric acid. If a slit is made in one end of the lemon‚ the penny can be inserted about half-way. A galvanized nail is pushed into the lemon close to the other end. This is not a battery that will power anything useful‚ but a sensitive

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    Baby Boom Research Paper

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    The fourth age the age of affluence otherwise known as generation X or the baby boomer generation. The baby boomer name came from the fact that almost exactly nine months after World War II more babes where born than ever before. Approximately 3.4 million babies where born in 1946 20 percent more than the previous year‚ the trend continued through 1947 with 3.8 million babies. The trend continued until 1964 when the trend finally lost steam and by that time just over 76 million babies where born

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