Cyclohexane: Two layers‚ top layer a bright orange color‚ the bottom a yellow color. Cyclohexene: Completely Decolorized Discussion: 1) Assuming the reactions of these hydrocarbons are typical of the classes of compounds which they belong what can you say about the relative relativities of the three classes? The Alkenes are the most reactive type of hydrocarbon as in both reactions ‚ they decolorized when bromine water was added‚ of which is usually brown‚ and when potassium
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Baking Project There are several chemical reactions taking place in the general baking of cakes. Every ingredient has its own function and causes a different reaction Synthesis: * Egg yolks (modify molecule’s structure) helps the oil-based and water-based components of the cake mix together. When eggs are cooked‚ the protein molecules become uncurled when exposed to heat and create new molecular bonds with other nearby protein molecules. When the egg is completely cooked‚ it helps form a
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IGCSE COURSEWORK - CHEMISTRY Name:Alessia Rovegno Class: S3scA Teacher: Mr tinwin Date:1-3-13 Experiment number: Ch 3 Title: Which is the Best Fuel? Mark awarded: C1 Coursework checklist (Following instructions) | Needed for | Student | Teacher | Comments | Follows written‚ diagrammatic or oral instructions to perform a single practical operation –measures water vol | 2 | | | | Use familiar apparatus and materials adequately and safely – safety glasses | 4 | | | |
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Chemistry plays an important part in studying Biology. It answers some questions that Biology could not explain alone. Questions like: How does an organism convert foods for energy? How do plants use sunlight and water into all the things that cells needed to grow and reproduce? How does the basic unit of life passed through generation to the next? Here are some contributions of Chemistry in Biology: • Within atomic theory‚ chemistry contributes towards biology in the understanding of atoms
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preload preload preload preload * Home * Privacy Policy * Disclaimer How to use the Grapevine effectively in business organizations? You are Here: Home > Business Communication > How to use the Grapevine effectively in business organizations? Grapevine is an informal channel of business communication. It is called so because it stretches throughout the organization in all directions irrespective of the authority levels. The management can use grapevine to supplement the formal channels
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Chemistry Lab Report on standardization of acid and bases. Purpose: To prepare standardize solution of sodium hydroxide and to determine the concentration of unknown sulfuric acid solution. Data and Calculations: This experiment is divided into two parts (Part A and Part B). In the first part of experiment‚ the standardize solution of sodium hydroxide is prepared by titrating it with base Potassium hydrogen phthalate (KHP). The indicator Phenolphthalein is used to determine that whether titration
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Significant Figures are very important when reporting scientific data because they give us knowledge of how well we can actually measure data. Before getting into the calculations we must first understand the rules for counting significant figures. 1. All nonzero digits are significant. Example: 547 (3 sig. figs.) 2. Zeros in a number between non-zero digits are always significant. Example: 4308 (4 sig. figs.) 3. Trailing zeros to the right of a decimal point are significant. Example:
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Combustion of Acetylene (ethyne) Rx: Back Why I don’t do acetlyene explosions in our lab.... Combustion of alkanes A quick review.... • Combustion reactions of alkanes consist only of C and H (hydrocarbon) • require O2(g) as a reactant • produce CO2(g) and H2O(g) and a large amount of energy!! Oxygen can be the limiting reagent which can lead to Incomplete combustion. For complete combustion of a hydrocarbon‚ oxygen must be in excess. If there isn’t sufficient oxygen‚ incomplete combustion occurs
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How British Schools work All British children must stay at school from the age of 5 until they are 16 Many of them stay longer and take final examinations when they are 17 or 18. Before 1965 all children of state schools had to go through special intelligence tests. There were different types of state secondary schools and at the age of 11 children went to different schools in accordance with the results of the tests. Slate schools are divided into the following types: Grammar schools. Children
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Scuba diving is a form of underwater diving in which a diver uses a scuba set to breathe underwater. According to the Professional Association of Diving Instructor (PADI)‚ a “DEEP DIVE” is considered to be anything from 18 meters (60 ft) to 30 meters (100 ft). A scuba diver moves around underwater by using swim-fins attached to the feet‚ however external propulsion can be provided by a diver propulsion vehicle. Scuba diving may be performed for a number of reasons; either for recreational purposes
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