7. Added zinc‚ Zn (s). | bubbles‚ zinc turns white | 8. Poured off liquid and rinsed | reddish specs‚ blue-ish liquid | Materials * 250 mL beaker * 100 mL beaker * 2 graduated pipettes * 50 mL graduated cylinder * Funnel and filter paper * Spatula * Copper power‚ o.i g * 8 M nitric acid‚ HNO3‚ 2 mL * 1 M sulfuric acid‚ H2SO4‚ 15 mL * 8 M sodium hydroxide‚ NaOH‚ 2 mL * Stirring rod * Hot plate * Beaker tongs * Balance * Zinc fillings
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and to note the appearance of the residue after heating. AIM: To observe the effects of heating different substances. MATERIALS: Hard glass test tubes Powered samples of Lead (II) nitrate Copper (II) sulphate Ammonium chloride Zinc sulphate Basic copper (II) carbonate‚ CuCO3. Cu(OH)2 Blue and red litmus and a splint METHOD: 1. About 1g of the solid was placed in a dry test tube and the test tube and its contents was heated in a burner
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Density of Metals Problem: How does the mass and volume help determine the density of known metal samples? Hypothesis: When comparing the density of Zn(zinc) and Cu(copper)‚ you will find that Copper is more dense than Zinc. You can test this out by using the density formula D=m/v. Materials: * 2 metals (options: zn‚ al‚ or cu) * 3 samples of each metal (small‚ medium‚ and large) * Scale/Balance * Calculator * Water * Graduated Cylinder Safety: * Be prepared for your
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Iron‚ which has the chemical symbol Fe‚ is an extremely useful metal and the most common element 0n the planet Earth. Here are some of the more common uses of iron in the world today. Uses of Iron * Iron catalysts are used in the Haber-Bosch Process to produce ammonia and the Fischer-Tropsch Process to convert carbon monoxide to hydrocarbons used for fuels and lubricants. * Iron metal is strong but is also quite cheap. Therefore‚ it is the most common metal in use today. Most automobiles
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analyze bromide‚ chloride‚ nitrate‚ carbonate and sulfate radicals Lab 4: Qualitative analysis of Basic Radicals present in drugs and dosage form Part 1: Examples of Drugs and dosage forms having basic radicals Part 2: How to analyze aluminium‚ iron‚ zinc‚ potassium‚ calcium‚ sodium radical Lab 1 Principle of identification of Inorganic drugs‚ compound‚ ions which is already identified but unknown to the student Principle What are the components of the principle of an experiment? Explanation
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considered to be one of the largest sources of heavy metals. Zinc‚ copper‚ and lead are three of the most common heavy metals released from road travel‚ accounting for at least 90 of the total metals in road runoff. Lead concentrations‚ however‚ consistently have been decreasing since leaded gasoline was discontinued. Smaller amounts of many other metals‚ such as nickel and cadmium‚ are also found in road runoff and exhaust. About half of the zinc and copper contribution to the environment from urbanization
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lemon battery is a simple type of electrical battery that is commonly made for school science projects because it illustrates a battery’s main components. Typically‚ a piece of zinc metal and a piece of copper metal are inserted into a lemon. Everyday objects such as galvanized nails and copper pennies can be used for the zinc and for the copper. A single lemon is usually studied using an electrical meter. Several lemons can be wired together to form a more powerful battery that will power a light-emitting
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was obtained from the brass‚ was used to react with iodide to produce iodine. Iodine was then titrated with thiosulfate. In this experiment‚ the amount of titrant dispensed correlates with the amount of copper; therefore‚ the amount of copper in brass was calculated by using the data recorded. In this experiment‚ the analyte is copper and the sample is brass. The concentration range of copper in brass is 50-95%. When copper reacts with iodide it forms a precipitate (CuI) along with iodine. As shown
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Steel Purpose The goal of this lab is to determine the thickness of the coating of zinc on galvanized steel using the mass and volume of a sample of galvanized steel‚ and by using a larger mass; it is possible to minimize percent uncertainty. Reactions Molecular: Complete Ionic: Net Ionic: Oxidation Half Reaction: Reduction Half Reaction: Data and Calculations Density of Zinc: Density: Specifications of Galvanized Steel from Trial 1: 1.07cm x 1.51cm
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potato Two pennies Two zinc-plated nails or screws Three pieces of copper wire A very small light bulb or LED light 1) Get a potato and cut it in half. Then make a small slit in each half just big enough to put a penny into. 2) Cut two pieces of copper wire and wrap one around one of the pennies a few times‚ and wrap the other one around the other penny a few times as well. 3) Take a third piece of copper wire‚ and wrap it around one of the zinc-plated nails or screws
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