Chemistry Summary The particle theory: 1. Matter is made of tiny particles 2. Particles of matter are in constant motion 3. Particles of matter are held together by very strong electric forces 4. There are empty spaces between the particles of matter that are very large compared to the particles themselves. 5. Each substance has unique particles that are different from the particles of other substances 6. Temperature affects the speed of the particles. The
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Grading Sheet—Single Element Paper Name Score __xx__ Introduction (8 points) _2_Identification of author and title (2) Ok _2_Explanation of context (including summary) (2) Ok _2_Effectiveness of the introduction (2) Ok _2_Adequacy of thesis (2) Ok Body Paragraphs (48 points) _8_Connection of analysis to thesis (8) Ok _8_Accuracy and validity of the analysis (8) Ok _8_Completeness and comprehensiveness
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response • Distress or strain- the adverse psychological‚ physical‚ behavioral‚ and organizational consequences that may occur as a result of stressful events • Four approaches to stress • Fight or flight homeostatic medical approach- the adverse psychological‚ physical‚ behavioral‚ and organizational consequences that may occur as a result of stressful events • the person/environment Fit approach- the adverse psychological‚ physical‚ behavioral‚ and organizational consequences that may occur
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ZOOL 1 Lecture 3 1 2 ¡ ¡ ¡ ¡ Chemical substances that cannot be broken down to simpler forms by ordinary chemical reactions Atom Atomic number Atomic mass Compound Molecule Macromolecule 3 ¡ ¡ ¡ ELEMENT Oxygen Carbon Hydrogen Nitrogen Calcium Phosphorus Potassium Sulfur
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COST SHEET FOR AMUL ICE-CREAMS [pic] PRESENTED BY HIRAL MEHTA 61 SAURAV MEHTA 62
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Chemical Oxygen Demand (COD)Introduction:The Chemical Oxygen Demand (COD) test is the standard method for measuring the amount of pollution in a sample that is unable to be oxidised biologically.Oxidation takes place on both the organic and inorganic component but as the organic component is more dominant‚ it is of more significant interest.In the COD test‚ the amount of oxidation that takes place depends on sample COD concentration‚ digestion time
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Chemical Reaction:- The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance. (b) Change of colour of substance
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Chemical Change Lab Name Data Table 1: |Chemicals |Well # |Reaction on White Paper |Reaction on Dark Paper | |NaHCO3 + HCl |A6 |Remains clear. |Remains clear. | |HCl + Blue Dye |B6 |Orange color. |Cannot distinguish color
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COST SHEET – FORMAT |Particulars |Amount |Amount | |Opening Stock of Raw Material | *** | | |Add: Purchase of Raw materials |*** | | |Add: Purchase Expenses
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fires and is a tool that you should carry when you go into the woods. Cerium and the element before‚ lanthanum are both used for dramatic spark effects in movies. They get a big block of it and put it to a grinder. Its atomic number is 58 and its chemical symbol is Ce. The last element I will discuss is neodymium. It is the best known out of the lanthanide series out of rare earths because of the one and only neodymium magnets. They are the strongest magnets in the world and there are many purposes
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