The Reaction of Various Metals with Ionic Salts Purpose: To examine the reaction of various metals with ionic salts Materials: * 4 test tubes * test tube racks * 10mL measuring cylinder * 4 metals (in containers)- Zn‚ Sn‚ Mg‚ Fe * copper (II) sulphate solution Safety: 1. Be careful with copper (II) sulphate solution it is poisonous and corrosive. handle with care 2. Do NOT BREATH in any gases produced 3. If you touch any of the metals‚ you MUST wash your hands
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VOLUME‚ AND DENSITY Purpose: The purpose of this experiment is find the density of two metals using their mass and volume. Introduction: The purpose of the experiment that was conducted was to measure and calculate the density of two different metals. Density is an important characteristic of a material. The density of an object shows how much mass is contained in the unit volume. To calculate the density of metals the experimenters had to find out the mass and volume of each and then use the following
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series of how metals should react. It places Calcium as the most reactive (of the metals being tested in this experiment)‚ followed by Magnesium‚ Aluminium‚ Zinc‚ Iron‚ Tin and finally‚ as the least reactive (of the metals being tested in this experiment)‚ Copper. However‚ the results this experiment produced did not follow this trend. If the metal that produces the most hydrogen gas is considered the most reactive‚ in this experiment magnesium was most reactive. And‚ similarly‚ if the metal that produces
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therefore called the master moulders and renowned bellsmiths and all men of great repute and cunning in foundry work to began the labor. But when the metal had been cast‚ it was discovered that the result was void of worth; for the metals had rebelled one against the other therefore the moulds had to be once more prepared‚ and the fires rekindled‚ and the metal remelted‚ and all the work tediously and toilsomely repeated. The Son of Heaven heard and was angry‚ but spake nothing. A second time the bell
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such as metals and mineral building material by surrounding media‚ which are usually liquid (i.e. corrosive agents)." Most metals corrode. During corrosion‚ they change into metallic ions. In some cases‚ the product of corrosion itself forms a protective coating. "For example‚ aluminium forms a thin protective oxide layer which is impervious to air and water. In other cases (e.g. iron)‚ however‚ the coating either flakes off or is pervious to both air and water. So the whole piece of metal can corrode
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ELECTROPLATING Electroplating is the application of electrolytic cells in which a thin layer of metal is deposited onto an electrically conductive surface. Electroplating is a plating process that uses electrical current to reduce cat ions of a desired material from a solution and coat a conductive object with a thin layer of the material‚ such as a metal. Electroplating is primarily used for depositing a layer of material to bestow a desired property (e.g.‚ abrasion and wear resistance‚ corrosion
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Lab design –Voltaic Cells Aim Of Experiment In this experiment‚ we are going to make a battery by making an electron current between the metals Zinc and Copper. We aim two study the voltaic cells and the transfer of electrons from the metal to the ion. The tendency for the electrons to flow from one chemical to another‚ such as from the zinc metal to the copper ion as shown here‚ is something that can be channeled and controlled. Channeling the flow of electrons is what we will take up in this
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times the mass of all the heavier elements‚ combined. 3. Lithium Name: Lithium Atomic number: 3 Atomic Weight: 6.941 grams/mole Group in periodic table: 1 Group name: Alkali metal Color: Silvery white/grey Lithium is solid only about half as dense as water and lithium metal is the least dense metal. Lithium is known as losing its electron‚ so it becomes Li+. Lithium is mixed with aluminum and magnesium for light-weight alloys and is used in batteries‚ some greases‚ some glasses‚ and
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Pg1Pg1 SCIENCE EXPERIMENTS ON FILE ™? Revised Edition 5.40-1 Potato Battery Lois Fruen and Chelen Johnson Topic Construction of a battery Time 45 minutes to 1 hour Safety ! Please click on the safety icon to view the safety precautions. Adult supervision is necessary for the soldering of the alligator
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The equation for the decomposition of potassium chlorate is: 2 KClO3 (s) 2 KCl (s) + 3O2 (g) Other metal chlorates behave similarly when heated; forming oxygen gas and the corresponding metal chloride. The reaction may be speeded by adding some MnO2 catalyst. Metal chlorate Metal chloride + oxygen In this experiment a weighed quantity of potassium chlorate is heated. The oxygen formed in the reaction is driven off and
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