Name: Jocelyne Munguia|Date: 6/12/13| Exp 1: Observations of Chemical Changes|Lab Section: 75426| Data Tables: Part 1: |Chemicals|Well No.|Observations of the Reaction| A.|NaHCO3 + HCl|A2|Tiny bubbles formed around the edges. Under white paper it looked transparent‚ but under black paper there was some white in the middle. | B.|HCl + BTB|A3|The mixture turned yellow instantly. Under white paper the mixture was more of mustard yellow and under black paper it was less of a bright yellow. | C
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Observation of Chemical Changes Purpose In this experiment‚ the student studied the composition of materials in a setting where the indications of chemical changes were safely observed. The changes observed consisted of bubble formation‚ colors‚ viscosity‚ and precipitate formation. Procedure Using a well plate: use a different well for each chemical combination. Two drops (unless otherwise noted) of each chemical in the combinations (below) should be placed in one well. A dark and light
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Mole Ratio of a Chemical Reaction: Copper & Silver Nitrate Lab #4 OBJECTIVE In this experiment‚ you will determine the number of moles of reactants and products present in the reaction of copper and silver nitrate‚ and calculate their mole-to-mole ratio. The mole-to-mole ratio relating to the disappearance of copper and the formation of silver metal will be used to write the balanced equation for the reaction. The reaction of copper metal with silver nitrate solution is a single
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| 1. For Part 2: Single-Displacement Reactions: For each of the four single-displacement reactions‚ describe what happened in each well. If a chemical reaction occurred‚ write a balanced equation for it. Then using the A‚ B symbols‚ write a general equation for a single-displacement reaction. Here are the chemical formulas of the reactants for each reaction: • zinc – Zn copper sulfate – CuSO4 • aluminum – Al copper sulfate – CuSO4 • zinc
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Humberside Fire and Rescue Service STANDARD OPERATING PROCEDURES FOR Chemical and biological hazards S.O.P. No 5.3 PRODUCED BY: OPERATIONAL SUPPORT SERVICE HEADQUARTERS HUMBERSIDE FIRE & RESCUE SERVICE STANDARD OPERATING PROCEDURES |
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Diamond Chemicals: Case 21-22 TO: Lucy Morris FROM: DATE: September 30‚ 2009 SUBJECT: Merseyside Project In this memo I will be making a recommendation for or against the Merseyside Project. With the help of a few questions that guide my memo‚ I will be able to determine whether or not to continue funding for the Merseyside Project. This memo will include an exhibit that will show an analysis of the Merseyside Project including the NPV and the IRR. In the DCF analysis that was
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CHEMICAL PARAMETERS OF FRESHWATERS Objectives At the end of this section‚ students should be able to 1. Distinguish between freshwaters and seawater in terms of ionic composition. 2. Describe the variation of ionic composition in natural freshwaters and other inland waters. 3. Explain the factors that contribute to such variation. 4. Describe Gibbs’ model that explains the major factors contributing to variation in chemical composition of inland waters. 5. Explain
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development has been the idea of chemical weapons‚ especially those in the form of weaponized gasses. These weapons‚ which are defined as an “ammunition or device‚ specifically designed to cause death or other harm through toxic properties of toxic chemicals.” have the potential to cause an unprecedented amount of harm if their proliferation is not regulated. The presence of these weapons throughout history is all too familiar to many of the world’s nations. Early chemical weapons‚ such as Chlorine and
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Josie Pierre‚ Jade Etienne‚ Jennifer DaRosa Honors Chemistry Period 1 Group 8 Mrs. Chan Topic: Chemical Explosions Due Date: 9/30/16 For this experiment‚ a few scientists are researching the changes in gas pressure and launch velocity needed to send a film canister across the room using the ignition of ethanol. The independent variable would be the different types of flammable sprays. The dependent variable would be how far the explosions are sent across the room. The constant would be way
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Writing Practical Reports Aim: To observe what happens during and after a chemical reaction. Equipment: Concentrated nitric acid in a glass dropping bottle Small pieces of Copper 250ml Beaker 2 M Lead nitrate in a dropping bottle 2 M Potassium iodide in a dropping bottle 2 M Copper sulfate in a dropping bottle 2 M Sodium hydroxide in a dropping bottle 2 M Hydrochloric acid in a dropping bottle 4 Pyrex test tubes Test tube rack Spatula Bunsen burner‚ gauze
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