Cu Metal Recycling Lab Mr. Nelson – Chemistry Purpose: The purpose of this lab is to carry out an extensive series of reactions based on the element copper. These reactions include; synthesis‚ decomposition‚ single and double replacement. In this experiment‚ recycling will also be introduced. Procedure: See attached Story board. Data and Observations and Data Analysis: Step Word Equation 1 Balanced Chemical Equation Type of Reaction Observations Copper + nitric Cu + 4HNO3
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anode | Glucose (C6H12O6) | No | Nothing changes | Nothing changes | Dilute Sulfuric Acid (H2So4) | Yes | Bubbles | Bigger bubbles | Sucrose (C12H22O11) | Yes | Light bubbles | Light but more visible bubbles and light brown liquid | Copper Sulfate (CuSo4) | Yes | Light bubbles | Changes color to brown and oxidation is observed | Ethanol (c2H5OH) | No | Nothing changes | Nothing changes | Calcium Hydroxide (Ca(OH)2) | Yes | Light bubbles | Light bubbles but more than in anode
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Chemical Reactions Lab Synthesis Reactions: Synthesis reactions occur when two elements or compounds combine to create one single compound. The general equation of synthesis reactions is: A+B→AB. The following are the complete balanced equations for the five synthesis reactions performed in the lab. Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: The reaction of CO2 and water is a prime example of a synthesis reaction. This is a synthesis reaction because it follows the general
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BALANCE LAB Introduction The purpose of this lab is to become familiar with how to use the ChemLab program for determining mass using both the centigram balance and the electronic balance. Using the centigram balance‚ the mass‚ in grams‚ of a copper slug will be determined by both direct weighing and weighing by difference techniques. Using an electronic balance‚ the wight of a copper slug will be determined by also utilizing direct weighing and weighing by difference. Average mass of a
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The purpose of this lab was in order to find which combination of two electrodes would produce the greatest voltage‚ under the condition that lemon juice was the electrolyte within a chemical cell. To conduct the lab‚ two slits were created in a lemon‚ which worked as a chemical cell‚ and an assortment of different electrodes were inserted into the lemon. Afterward‚ two wires were attached to each of the electrodes‚ where a voltmeter then gave a reading that was recorded into data. As the experiment
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Timothy Johns Christian Howard Wan Huang 10/18/12 Flame Test Lab Introduction Spectroscopy is the study of the electromagnetic radiation emitted or absorbed by atoms and molecules. These studies are very helpful in determining an unknown element‚ given the fact that all elements burn a different color. The flame colors vary because of the different amounts of energy the elements give off. This lab is made for the learner to determine the identity of two unknown elements. Hypothesis If
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electrolysis is carried out then write balanced half reactions and compare to observations. Part A/B- Aquire a U-tube with flexible tubing at bottom‚ and close tightly with a clamp to add different cells before mixing. Prepare metal strips of lead‚ copper‚ zinc‚ and iron as electrodes by cleaning them with steel wool. Fill each side of you tube with proper cell and electrode for each test and record cell potential with a voltmeter. Part C – Use an all glass U tube and various cell solutions to be
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of pasta noodle would hold the most pennies if we were to tape them to two stools 16 cm apart‚ dropping pennies into a cup tied around the noodle? Expiremental Variables - We will be able to identify the mass of a penny and how it can test the strength of a pasta noodle as a result of the downward pull of gravity on the penny. Test Variable: The type of noodle is what I’d be changing throughout the process Outcome Variable: I would be observing how many pennies each noodle could hold counting every
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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 work in the laboratory. * Read all procedures thoroughly before entering the lab and/or starting experiment. * Be alert
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1. Why are spindle fibers important for mitosis? (5 points) Spindle fibers work as a path for chromosomes to travel(Campbell‚ 2009). 2. State the four bases that make up DNA. (4 points) a. (A)-Adenine b. (G)-Guanine c. (T)-Thymine d. (C)-Cytosine (Campbell‚ 2009). 3. What are the two base pairs? (2 points) a. AG b. CT 4. Answer the following questions: a. Define the term crossing over. (3 points) The phase in meiosis where chromosomes exchange segments of genetic materials (Campbell‚ 2009). b. Explain
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