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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observation Before * Blue solution of copper sulfate * Grey zinc powder During * Blue color solution changes to greyish black * Heat is given out‚ so the surroundings become hotter. After * Grey powder remains on the sides of the cup * Precipitate formed at the bottom of the cup List of chemicals and apparatus used Chemicals used Copper sulfate solution‚ 1 mol dm-3 25g of zinc powder Apparatus needed Pipette‚ 25ml Pipette filler Polystyrene cup
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Investigatory Project In Science & Technology IV (Potato Battery) Submitted by : Eloisa Umali Chelsea Jayne D. Diaz Pia Angela Valencia Acknowledgement The researchers would like to acknowledge with sincerest gratitude the following persons for the support they gave to them in the accomplishment of this investigatory project. Mrs. Rosie Castillo‚ who guide us and helped us in making this project. Who gave us the opportunity
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N12/4/CHEMI/SPM/ENG/TZ0/XX 88126104 CHEMISTRY standard level Paper 1 Friday 9 November 2012 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper. • The maximum mark for this examination
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nitrates are copper (II) nitrate‚ lead (II) nitrate‚ zinc nitrate‚ magnesium nitrate‚ and silver nitrate. You can not manufacture the containers from glass due to possible breakage. Nor will plastic containers do because plastic tends to harden over time and also may shatter. This leaves metal. Unfortunately‚ many metals get eaten away (corrode)‚ when they come in contact with aqueous nitrates. Company documents indicate that copper‚ lead‚ zinc‚ and magnesium metals may work for aqueous nitrate
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molybdenum and niobium are plentiful. The industry scale expands rapidly as the production volume of non-ferrous metals maintains rapid growth in recent years. The total production volume of the 10 major non-ferrous metals (copper‚ aluminum‚ lead‚ zinc‚ nickel‚ tin‚ stibium‚ magnesium‚ titanium and mercury) was 40‚287‚816 tons in China in 2013‚ up by 9.91% YOY. Major production regions of non-ferrous metals are Henan‚ Gansu‚ Hunan‚ Yunnan and Shandong. The production volume in the 5 regions accounted
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Wash hands for safety. 3. Take the clock module and place fruit in the two holders. 4. Remove plastic coatings at the end of all wires with scissors. 5. Take the black cable and tie one end to the Zinc metal contact. 6. Take the blue cable and tie one end to the Zinc metal contact and the other end of the Copper metal contact. 7. Take the red cable and tie one end to the Copper metal contact. 8. Insert the metal contacts to the fruit. 9. Attach the black and red
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Voltage of electrochemical cell CONTROLLED VARIABLE: Temperature of surrounding (room temperature)‚ Temperature of solutions‚ Volume of solutions (100mL)‚ Concentration of ZnSo4 (0.1 mol)‚ Concentration KNO3 (1 mol)‚ Type of filterpaper‚ Mass of zinc and copper electrode APPARATUS • Digital Voltmeter • 2 beakers 100mL • 2 Conductivity Cups • Filterpaper • Wires 2x • Crocodile clips 2x • 100mL of 0.1 mol ZnSo4 Solution • 100mL of CuSo4 Solution with the following concentrations
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proper chemical reactions. Equipment and Materials: ← Copper Metal (penny) ← Nitric Acid (HNO3)(aq) ← Sodium Hydroxide (NaOH)(aq) ← Sulfuric Acid (H2SO4)(aq) ← Ammonium Hydroxide (NH4OH)(aq) ← Hydrochloric Acid (HCl)(aq) ← Zinc powder ← 2 100 ml Beakers ← 250 ml Waste Beaker ← 400 ml Beaker ← Filter paper ← Plastic Dropper ← 250 ml Erlenmeyer Flask ← Forceps ← Plastic Funnel ← Red Litmus paper ← Spatula ← Steel Wool ← Glass
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CORROSION Corrosion is defined as the involuntary destruction of substances 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
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