into the table or the wires broke. Materials: 1) Water 2) Beaker 3) Test Tube (2) 4) Spoon 5) Salt 6) Baking Soda 7) Test Tube holders (2) 8) Battery 9) Wire Results: Before adding the salt and baking soda there was no bubbles in the beaker and the water was still clear. When adding the salt and baking soda the water became foggy and bubbles began to appear. It seemed that the positive (+) wire had more bubbles then the negative (-) wire. After letting the experiment
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to use a Bunsen Burner. Materials: The materials used were; safety goggles‚ safety apron‚ ring stand‚ Bunsen Burner‚ flame striker‚ gas‚ wire gauze‚ a beaker‚ beaker tongs and 100 mL of water. Methods: 1. Put safety goggles and safety apron on. And tie all lose articles and hair back. 2. Hook the Bunsen Burner to the gas and turn the gas on. 3. Use a flame striker or a match to light the Bunsen Burner.
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Flame Tests The flame testing is a method used in chemistry to detect the presence of certain ions‚ primarily metal ions‚ based on each element’s characteristics emission spectrum. The colour of the flames normally depends on the temperature. Different types of Bunsen burner with flame types depend on the oxygen supply. The flame of rich fuel with no premixed oxygen produces a yellow diffusion flame. The flame of lean fully oxygen premixed flame produces no soot and the flame colour is produced
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experiment was to test which area of three designated areas in a Bunsen Burner flame would have the highest temperature. The first position was the tip of the blue outer flame‚ the second position being the tip of the inner cone‚ and the last position being half way down the inner flame. Through the courses of the experiment‚ data collected showed that Position A was the hottest of the three. The highest average temperature of the flame in effects to a beaker of water was 36.0°C as compared to 34.9°C and
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solution. The alum was synthesized from aluminum foil and run through a filtration system to isolate the alum. 2 Al(s) + 2 KOH + 22 H2O + 4 H2SO4 → 2 KAl(SO4)2●12H2O(s) + 3 H2(g) Its composition was analyzed using two precipitation tests and two flame tests. Three methods for growing crystals were then set up for observation next lab. Theoretical yield and percent yield: The theoretical yield for alum was 4.55g and the percent yield was 139%. The percent yield was above 100% because the alum was
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equipment. The sterility of these tools is maintained by proper handling procedure‚ which prevents the introduction of contamination. The basics of aseptic technique are: Autoclave or steam sterilization of all equipment and media. Flame sterilization of wire loops and needles which are used to transfer bacteria from one growth condition to another. Flaming the mouth of test tubes and other containers to establish hot air convection out of the container‚ to reduce the chance of microbes entering
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up for Qualitative Analysis 1. Introduction- This experiment is for qualitative analysis so we are trying to find out what is in a substance. In this case we are using the flame test to try and discover what is in 4 unknown sample solutions that we have been given this is done by cross referencing the colour of the flame with 6 known solutions we test beforehand. Aim- In this experiment we are attempting to distinguish what substances are in the 4 unknown solutions by cross referencing with
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Objective The objective of this lab is broken into two parts. The first is to recognize the principles of flame ionization and atomic spectra. The second is to observe and thus further understand the line spectra for multiple elements or molecules as well as determine the correlation between emission spectra and atomic structure. Experimental Procedure Procedure 1: Observation of Line Spectra by Discharge Tubes Six discharge lamps were selected – argon‚ carbon dioxide‚ helium‚ hydrogen‚ iodine
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The very first experiment had the hypothesis that the temperature of a burner flame can be controlled by adjusting the ratio of gas to air in the mixture to be burned. During this experiment‚ my partner and I gathered our materials of the paper matches‚ straight pins‚ copper wire‚ laboratory burners‚ rubber tubing‚ tongs‚ and evaporating dish. Making sure we had our safety goggles on and the material we needed‚ we connected the Tirrill burner into the gas and lit the burner with the match‚ having
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of Ba2+. Flame Tests Analysis of Sodium and Potassium One of the most common methods of identifying cations is by using a flame test. The flame color is due to excitation of valence-shell electrons upon heating‚ followed by relaxation of the electrons with the emission of photons of light. Sodium ion can be identified by a very intense yellow-orange flame. Potassium ion is identified by a lavender-pink flame. However‚ if both ions are present together‚ the intense flame of Na+ hides the
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