Materials The materials required for this experiment: 9 wooden barbeque sticks (disposable skewers) 150 mm long each Approximately 500 mm of copper wire Red and black insulated wire (0.5 mm) ‚ 5 meters long each 1 tube of super adhesive glue 1 roll of scotch tape 1 roll of insulation tape Aluminum foil 50mm x 500 mm 1 DC high voltage power supply ?up to 50kV at 5005A Ruler Paper knife 1 resistor 10kohm‚ 2W Procedure 1. For this experiment‚ the independent variable is the DC voltage
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periodic table‚ between groups 2 and 3. They are generally hard and dense‚ and less reactive than the alkali metals. Iron‚ copper‚ silver and gold are important transition metals. The transition metals: overview The elements in the centre of the periodic table‚ between groups 2 and 3‚ are called the transition metals. Most of the commonly used metals are there‚ including iron‚ copper‚ silver and gold The transition metals Common properties The transition metals have the following properties in common:
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Episode 112: Resistivity In this episode‚ students learn how and why the resistance of a wire depends on the wire’s dimensions. They learn the definition of resistivity and use it in calculations. Summary Discussion: Variation of resistance with length and area. (5 minutes) Student experiment: Variation of resistance with length and area. (30 minutes) Discussion: Variation of resistance with length and area. (10 minutes) Student experiment: Measurement of resistivity. (30 minutes) Student
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Making an Activity Series of Metals using different Solutions Purpose/ Hypothesis: The purpose of this lab was to clearly identify the reactivity of magnesium‚ zinc and copper. The metals reactivity will be exemplified as it will be tested with different solutions such as zinc sulfate (ZnSO4)‚ copper sulfate (CuSO4)‚ hydrochloric acid (HCL)‚ magnesium sulfate (Mg2SO4)‚ iron (II) sulfate (FeSO4) and tin (II) chloride (SnCl2). This will allow us in creating an activity series to visually see the reactivity
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too brittle to use for structural materials. 2. A) Describe the uses of brass‚ steel and solder and 2 other alloys of your choice‚ and explain how these uses relate to their properties. Brass: The two major metals in brass are copper and zinc. The proportion of the copper to zinc affects the colour of the alloy‚ ranging from a rose coloured alloy to a yellow alloy. The higher the proportion of zinc‚ the greater the hardness and tensile strength of the alloy. Brass can be highly polished and is lustrous
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when the solute atoms take up positions of solvent atoms in the crystal lattice. If the two metal atoms are about the same size and have the same crystallographic structure‚ then the two metals may form a solid solution. Brass‚ an alloy composed of copper and zinc‚ is an example of a substitutional alloy. Alloys have different applications depending on their properties. The various types of steel and iron are all alloys classifiable by their content of other materials. For instance‚ wrought iron has
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Description of the experiment * Aim: To observe the reactions of sulfuric acid as an oxidising agent and as a dehydrating agent. Equipment: * 20mL of concentrated sulfuric acid * 20mL of 2mol/L sulfuric acid * 2 small pieces of each of copper‚ zinc and iron * Sandpaper * 10 test tubes * Test tube rack * 2g of sugar crystals (sucrose) * 2 wooden ice-cream sticks * 10mL measuring cylinders Steps: A: Sulfuric acid as an oxidising agent 1. Clean pieces of metal
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Lab Chapter 4 4.1.1 Exercise: Standards are important for NIC‚ Connectors and Media‚ because of the Stability‚ Consistency‚ and Minimization of packet errors. 4.1.2 Exercise: Why is it so low when the capacity for transmission electricity on the copper wire is so high? Because‚ due to truncation on the transmission of voltage with an electric current. 4‚1‚3 Exercise: It’s used in the Healthcare facilities‚ because it’s more fire resistance. 4.1.4 Exercise: Category | Maximum Speed | Application
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(measured in amperes) is what is meant by electric current. In most materials‚ the direct current is proportional to the voltage (as determined by Ohm’s law)‚ provided the temperature remains constant and the material remains in the same shape and state. Copper is the most common material used for electrical.Silver is the best conductor‚ but it is expensive. It has a resistivity of 1.6×10−8 Ω⋅m. Because gold does not corrode‚ it is used for high-quality surface-to-surface contacts. However‚ there are also
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Electroplating shop: Electroplating is primarily used for depositing a layer of material to bestow a desired property to a surface that otherwise lacks that property. Mainly electroplating is used for the following purposes: * Abrasion * Wear resistance * Corrosion protection * lubricity and * Aesthetic qualities The electroplating shop of Energypac Engineering Limited consists of three sections. i) Seven color section ii) Nickel section iii) Silver section Seven color section:
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