Flame test: - Clean wire loop - Dip the tip of the wire loop into solution (If solid‚ dip the tip in DIW then dip the soaked wire loop in to the solid) - Proceed to placing the tip into fire (from Bunsen burner) - Observe - Na+ = bright orange -Cu2+ = green - K+ = Violet (Can be masked by Na+) - Ca+ = Brick Red - H4N+ = no color Cobaltnitrite test for K+: -Heat NH4+ off -In a small test tube/vial‚ or spot plate and place 10-15 drops of solution to test -Then add a drop of 6M HAc and
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swing faster or harder against the cans. Conclusion: The tab moved with both experiments‚ but it moved faster and harder with the television than with the bug zapper. I have concluded that the experiment was a success and by using the cans and wires I demonstrated how the Franklin bell works. Relevance: This is a relevant experiment in that it is a good way to test Benjamin Franklin’s original experiment and is useful because it simplifies the experiment using ordinary materials at home. Bibliography:
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This Summer This summer was bad. I had a few incidents occur. So the first one was not as bad as the second one. I rode my bike to the Iowa Falls pool. It was a great day just hanging out with my friends and chilling in the cold water. I did multiple things like riding the waterslides and going off the diving boards. I had to leave around five o’clock. Once five o’clock rolled around I packed up my things and headed on my way. I decided to take a shortcut so that I would get home faster. The shortcut
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adjusted to attain a blue flame? What is the hottest part of a Bunsen burner flame? Is burning the gas a chemical or physical change? Is it endothermic or exothermic? Hypothesis: The Bunsen burner should be lit by striking the match first‚ turning on the gas‚ igniting the gas‚ and adjusting the flame using the gas flow valve‚ the collar‚ and the table gas release to achieve a blue flame. I predict that the hottest part of the Bunsen burner flame is the tip of the flame. The gas burning is a chemical
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The following document provides sample items for each knowledge subtest of the ASTB. The sample items are not meant to provide an exhaustive list of the types of questions that will be found in the test. Instead‚ these questions are meant to familiarize examinees with the format and content of questions found within each section. Item difficulty ratings are provided for each question where applicable‚ and can be used to gauge how hard a given question is in comparison to similar types of questions
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A direct current (DC) motor is a fairly simple electric motor that uses electricity and amagnetic field to produce torque‚ which turns the motor. At its most simple‚ a DC motorrequires two magnets of opposite polarity and an electric coil‚ which acts as an electromagnet. The repellent and attractive electromagnetic forces of the magnets provide the torque that causes the DC motor to turn. If you’ve ever played with magnets‚ you know that they are polarized‚ with a positive and a negative side. The
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flametestlab - Flame Test Lab flametestlab.wikispaces.com/Flame+Test+Lab Write out formulas for all solutions and get teachers initial. Obtain solutions to be tested. Light Bunsen burner flame. Dip wire in one solution and place it in the ... [PDF]Flame Test Lab 2.0.pdf cbsd.org/.../filedownload.ashx?...Flame%20... Central Bucks School District The purpose of this experiment is to observe the characteristic flame test colors
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CHAPTER 27&29 INTRODUCTION TO WELDING & FUSION WELDING PROCESS Dr. Tasnim Firdaus Ariff Welding Fundamentals Overview of Welding Technology 2. The Weld Joint 3. Features of a Fusion Welded Joint 1. 2 Joining and Assembly Distinguished Joining - welding‚ brazing‚ soldering‚ and adhesive bonding These processes form a permanent joint between parts Assembly - mechanical methods (usually) of fastening parts together Some of these methods allow for easy disassembly‚ while others do not 3 Welding
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gas valve closes‚ stopping fuel and the fan continues to blow until the fan and limit cools‚ turning off the blower. High Efficiency Furnace 24 volts is always present to the thermostat R terminal. 1. Thermostat sends 24 volts through white wire to furnace. 2. Furnace checks pressure switch‚ and safety switches for proper positions (open/closed). 3. Draft inducer blower motor‚ starts to run. 4. If vent and vacuum hoses are clear the pressure switch‚ closes. (Only a few pressure switch’s
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This error affects the amount of air in the room‚ which affects the flame that is being used to burn the popcorn and cheese and bacon ball. Food mounted on the needle each time. This was a random error due to it not being consistently mounted in the same way or on the same angle due to the food samples different shapes
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