Dalton’s atomic theory states that elements combine in simple numerical ratios to form compounds. A compound‚ no matter how it is formed‚ always contains the same elements in the same proportion by weight. The law of mass conservation states that mass can neither be created nor destroyed. In this experiment‚ the mass of the metal was not destroyed or created; the metal’s mass was simply changed into a compound form once the gas reacted to it. The net mass of the reactant side of the equation and
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bonds to a compound. In a reduction reaction the oxidation number of a carbon atom decreases. The opposite is an oxidation reaction in which the carbon atom oxidation number increases. In compounds with double or triple bonds a reduction reaction can occur by adding hydrogen atoms across the pi-bond. This can change an unsaturated compound to a saturated compound. Saturated means that the compound has the maximum amount of hydrogen bonds with no double or triple bonds in the compound while unsaturated
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immiscible solvents ii) partioning of a compound between two immiscible solvents and determination of KD iii) liquid-liquid extraction with aqueous acids and bases with organic solvents. iv) use of drying agents Introduction Liquid-liquid extraction is a method used for the separation of a mixture using two immiscible solvents. The ability to separate compounds in a mixture using the technique of liquid-liquid extraction depends upon how differently the compounds of the sample mixture partition themselves
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Flame Test Lab Question: When a compound is placed in the flame of a burner‚ what happens to the color of the flame? Hypothesis: When the compound is placed in the flame‚ the flame changes color depending on the chemical compound. When they’re heated‚ they gain energy and changed color sometimes. Safety Requirements for this Lab: Wear goggles at all times. If you want to remove them to write in your notebook you may sit at a table in the center of the room. When you sit down remove them
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favorite elements‚ they must be Hydrogen‚ Carbon‚ Nitrogen and Oxygen. These four elements make up the majority of all Biological compounds. Without them‚ life on this planet as we know it could not exist. Due to the bonding possibilities between and among these elements‚ literally millions of organic compounds are possible. Carbon is the backbone of all organic compounds. It forms the main structure of the molecule with Hydrogen‚ Nitrogen‚ Oxygen and occasionally other elements replacing Carbon or
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able to identify them. This lab also focuses on observing the reversibility of hydration reactions by hydrolysis‚ and also testing substances for efflorescence of deliquescence. Procedure: A. Identification 1. Place 0.5 grams of each compound (Nickel Chloride‚ Potassium Chloride‚ Sodium Tetraborate‚ Sucrose‚ Calcium Carbonate‚ and Barium Chloride) in a small dry test tube. 2. Heat gently with a burner flame and observe carefully. If droplets of water appear on the test tube it
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into two or more substances. It is a synthesis reaction in reverse. The general formula for this is: ABA+B. An example of this is wateroxygen+hydrogen. Single deplacement occurs between an element and a compound. During single deplacement reactions one metal replaces another metal in a compound. The general formula for this is: Ax=Y Ay+X. An example of a single deplacement reaction is Copper chloride+Aluminum chloride--+aluminum
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Objective: The objective of this experiment is to determine the mass percent of iron in an iron compound using a spectrophotometer. From there‚ determine which iron compounds are in the stock room bottles based off of the experimental mass percent results. II. Introduction: The objective is to determine the mass percent of iron in an iron compound using a spectrophotometer. From there‚ determine which iron compounds are in the stock room bottles based off of the experimental mass percent results. The objective
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Eli has a lot of moments in his while living in the compound. One big moment Eli has is when he walks into the compound and the silver door locks (Bodeen‚ 2008‚ p.2). The door is symbolic because it is thought of every time Rex is brought up for putting them in the compound. It means they are safe but also in danger. This was a big moment because he was locked in the compound for 15 years now. Eli and his family entered the compound because a fake nuclear attack occurred. This fake nuclear attack
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Chromatography Kaya Gaudet 6784928 January 9‚ 2013 Line Structure References BenzophenoneBiphenylBenzoic Acid Extraction: A process used to separate different compounds in a mixture based on their solubility in an immiscible substance. Usually an aqueous and organic phase are used. During extraction the desired compound moves one phase and leaves the unwanted substance behind. Extraction normally has to be done a few times to leave all of the impurities behind. TLC plating can be used to
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