Chemical Reactions Chemical Change • reorganization • original substances form new substances with different formulas • may or may not involve a change of state • symbols used to describe chemical reaction are known as a chemical equation • Chemical equations do not have equal signs (=) they have an arrow Chemical Equations • Must follow the Law of Conservation of Matter • atoms can neither be created or destroyed during a chemical reaction • What
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Touch is the oldest and the most primitive sense that we have. It is the first sense we experience in the womb and the last one we lose before death. The organ that is most associated with the sense of touch is the skin. The uppermost part of the skin is called epidermis‚ which is as thick as a piece of paper‚ and it protects the inner part. Below the epidermis‚ there is dermis. Dermis is where the sense of touch is originated from. It is filled with many tiny nerve endings‚ which gives the person
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levels on the reef are too great to be repaired naturally. This example of chemical bleaching should be noted in history as a reason for retiring the practice of using man made chemicals on reefs to promote their
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Soren Chemical: Why is the New Swimming Pool Product Sinking? Case Study Analysis Submitted by Group Introduction Soren Chemicals was founded in 1942 by Timothy Soren to sell industrial-strength cleaning solutions. Since then‚ the company had expanded its focus to include industrial chemicals for lubricants and fuels‚ as well as a range of chemical solutions for treating drinking water and wastewater. Historically‚ Soren Chemical had concentrated on business-to-business sales and placed little
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Chemical Bonding Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms ... a chemical bond. The two extreme cases of chemical bonds are: Covalent Bonds Covalent chemical bonds involve the sharing of a pair of valence electrons by two atoms‚ in contrast to the transfer of electrons in ionic bonds. Such bonds lead
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“kid pitch” baseball‚ and I was blessed to have my first step dad as my coach. He always found favor in creating the team of kids that nobody else wanted‚ and we would always be a competitor. It was then I noticed‚ not only a special ability to play the game but a born sense of leadership. Another beneficial factor in learning the game at any age is getting whooped by the other team‚ and having the ability to know our guys did everything we could at the best we could‚ and we knew it. This teaches
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Chemical Description Chemical Description Chemical #1 Seashell Calcium Carbonate - CaO3 Density | * 2.71 g/cm3 (calcite) * 2.83 g/cm3 (aragonite) | Exact mass | * 100.0869 g/mol | Molecular Formula | * CaO3 | Melting point | * 825 °C (calcite) * 1339 °C (aragonite) | Boiling point | * Decomposes | Acidity | * 9.0 | Flash point | * Non flammable | Crystal structure | * Trigonal | Other names | * Limestone‚ Marble‚ Chalk‚ Calcite and
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CHEMICAL EQUILIBRIUM Reversible reactions and dynamic equilibrium Ammonia (NH3) is an important industrial chemical that is used in the manufacture of fertilisers. It is manufactured by reacting hydrogen with nitrogen. The reaction is said to be reversible and the conversion of reactants to products is never complete. N2 + 3H2 2NH3 A reversible reaction is a reaction which can take place in either direction When the concentrations of the reactants and product have become constant‚ a
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There is Someone For Everyone “I hate my mom. I swear she get on my nerves always judging what I do. We argue everyday about dumb things that she don’t even have to speak on. I be telling her to stay out of my business. I’m too grown for her to be constantly in my business. When I finally get a job‚ I’m moving out. I cannot take any more of this woman anymore. She never listens to what I have to say. I hate that woman.” Majority of everybody I know says these exact words‚ or about the same words
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known to you‚ provide a critical evaluation of different ways of understanding a ‘sense of place’ From a geographical perspective‚ the term ‘place’ is more than simply a ‘location’ on a map set with “’objective’ markers such as longitude and latitude”. As geographers we must consider the “feelings evoked by a place” in those who “live there” and those “who visit”. In other words‚ we must also consider the subjective “sense of place” (Cresswell 2014). By combining both “objective and subjective facets”
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