... Sir Irfan siyal Date: 27-03-201 Volatile Organic Compounds (VOCs) What are Volatile Organic Compounds (VOC’s) that we hear so much about? Simply, they are chemicals which are carbon-based (hence the “organic” in the name, as organic chemistry is the study of carbon containing compounds) and which volatilize – or rather, evaporate or vaporize – at ordinary (atmospheric) temperatures. This is a very broad set of chemicals! These volatile organic compounds (VOC’s) are ubiquitous in the environment. You can’t see them, but they’re all around us. They’re not listed as ingredients on the products you bring home, but they’re often there. The most common VOC is methane, which comes from wetlands and rice agriculture to …well, “ruminant gases” (or cow farts – which are actually not a trivial consideration: cows are responsible for 18% of all greenhouse gasses – read more here). We ourselves contribute to CO2 emissions each time we breathe out. They’re also in paint, carpets, furnishings, fabrics and cleaning agents. The evaporating chemicals from many products contribute to poor indoor air quality, which the U.S. Environmental Protection Agency estimates is two to five times worse than air outside – but concentrations of VOC’s can be as much as 1,000 times greater indoors than out. These chemicals can cause chronic and acute health effects, while others are known carcinogens. Hurricane Katrina proved a lesson in what happens when we don’t pay attention to indoor...
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...determined by Scientists who make a list of who uses the water like, humans, plants, and animals. Then they determine the uses like drinking, showering, homes for fish, bugs, wildlife, or irrigation of crops. The Scientists then group the uses into categories like Aquatic Life, Drinking Water, and Recreation. After that they determine what uses that the bodies of waters support. An example is that all bodies of waters should support Aquatic Life. When all of those things are established, the Scientists, oversee the water bodies to decide if they support the category. The scores that the water bodies receive, after they are monitored, are Good, and Impaired. The EPA has indexed 167 chemicals as criteria pollutants. Most of the chemicals are very harmful. Some of the chemicals are even natural chemicals. The level of the chemical that is in the water determines if it is toxic or not. This list shows what chemical, then it confirms the concentrations for freshwater, saltwater, and human consumption. The results are given for the CMC-Criteria Maximum Concentration. The standards for drinking water are much higher and tougher. The standards are from Drinking Water Standards and Health Advisories contain a list of tables that covers ninety-four contaminates. The ninety-four contaminates are enforced by the Safe Drinking Water Act of 1974, and are shown as maximum contaminate levels (MCL’s). That means there can only be a certain amount of the chemical in the water that are at a safe level...
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...Dangers of Chemical Cleaners Toxic Chemicals In Household Cleaners You deserve to know what is in the products you are using to clean your home! Most household cleaners contain toxic chemicals. Ammonia, Formaldehyde, Phthalates, Benzalkonium Chlorid, and 2-butoxyethanol, are among them. Oven cleaners are one of the most toxic products people use. They contain lye and ammonia. The chemical companies spend billions of dollars each year brainwashing us. Ninety-one percent of the population applies 300-million pounds of these poisons annually, often indoors. The government acknowledges that these cleaning products are hazardous, but regulation only requires labels to indicate if they are: combustible, corrosive, poison, caution, etc. They are not required to expose the full ingredient list. Below You Will Find Some Very Good Articles on the Toxins in Chemical Cleaners and Things You Can Do To Improve the Health of Your Home Chemical Products and Asthma Hazardous ingredients in common cleaning and maintenance products. The Dirt on Cleaning Product Companies Disinfectant Overkill Household Cleaning Products: What Every Woman Should Know What’s That Smell? Chemicals of Concern Commonly Found in Fragrance Used in Cleaning Products Toxic Chemicals: The Cost to Our Health Get Rid of Toxic Dust Build-Up Go Shoeless in the House Cleaning for Home Health...The Plain Facts! The article below is from Dr. Gideon Koren. He is a pediatrician, pharmacologist...
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...Lab Report for Experiment #4 Physical and Chemical Properties and Changes Student's Name __________ __________ Date of Experiment ___ _________ Date Report Submitted _________________ Title: (copy from lab, 1 point) Purpose: (copy from lab, 1 point) Changes to the Procedure by Instructors: 1. Do not test the odor of the samples. 2. In this lab the test tubes can get very dirty and cleaning is difficult. Your test tube may break, but don’t worry about it you will not need them again this term. Dispose carefully in the trash. Have you made any changes to the procedure? Please explain: Fill out the data sheet (page 3) for the experiment and answer the questions. Note: read the lab introduction for clarification on the difference between physical and chemical changes. Remember that a physical change often occurs during a chemical change, but a chemical change does not always happen when a physical change occurs. If you still have questions ask your instructor. From experiment # 1 we learned that a chemical change results in a color change, the formation of bubbles, the formation of a precipitate, or a change of temperature. Keep that in mind when you are deciding whether a physical or chemical change has occurred. Data Table (8 points) Read carefully before you begin your experiment! Be complete when writing your observations. One word observations are not usually complete. If there is a color change, include the color before and after. For...
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...a safe, healthful environment for all our employees. This written hazard communication plan is available at the following location for review by all employees: [Location name]. Identifying hazardous chemicals A list is attached to this plan that identifies all hazardous chemicals with a potential for employee exposure at this workplace. [Attach list]. Detailed information about the physical, health, and other hazards of each chemical is included in a Safety Data Sheet (SDS); the product identifier for each chemical on the list matches and can be easily cross-referenced with the product identifier on its label and on its Safety Data Sheet. Identifying containers of hazardous chemicals All hazardous chemical containers used at this workplace will either the original manufacturer’s label --that includes a product identifier, an appropriate signal word, hazard statement(s), pictogram(s), precautionary statement(s) and the name, address, and telephone number of the chemical manufacturer, importer, or other responsible party -- OR a label with the appropriate label elements just described; OR workplace labeling that includes the product identifier and words, pictures, symbols, or combination that provide at least general information regarding the hazards of the chemicals. [Name of person or job title] will ensure that all containers are appropriately labeled. No container will be released for use until this information is verified. Workplace labels must be legible and...
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...solutions for every home. Many common household cleaners contain EGBE(2-butoxyethanol or known as ethylene glycol butyl ether). It acts as a degreaser and is a colorless, biodegradable chemical with a fruity odor. It is on lists as being a toxic air contaminant and some animal studies indicate that these chemical produced reproductive problems. People exposed to this contaminant have reported nose and eye irritation, headaches, vomiting, and a metallic taste. However, due to low regulation levels, it is difficult for customers to know if their cleaners contain this chemical because it is not listed on the label. Federal and state governments do not regulate air pollution inside the home. An early cleaning company that branded itself as being nontoxic and environmentally friendly used this chemical in its products but did not label it in order to “protect its formula from piracy.” Companies such as Clorox Co. and S.C. Johnson also use this chemical without printing it on the label. They were able to do so when EGBE was removed from the list of hazardous air pollutants and maintains a guideline of for how to prevent chronic inhalation exposure. However, it is a guideline, not a regulation. Professors at University of California, Berkeley not that the EPA erred when it removed the chemical from the hazardous...
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...Superfund located in Near Town, Idaho Springs, Colorado 80452. The Clear Creek site is 400-mile watershed consisting of multiple mine waste piles, draining mine adits, tailings impoundments, and impacted groundwater resources. This site is also on the NPL. a. Why is this location a Superfund site? This is a Superfund site because it includes harmful waste and is a risk to human health due to the concentration of harmful chemicals, such as cadmium, arsenic, copper, lead, zinc, and manganese, which can be ingested through breathing in these chemicals in the air or drinking contaminated water from the groundwater supply in Idaho Springs. b. When did this pollution occur? How? In 1859, gold was discovered in Idaho Springs and surrounding areas. However, after the mines were shut down after being void of gold, extensive chemicals and waste from the mines began to seep into the groundwater, infecting the surrounding cities. Further, people entering areas where contamination, such as tailings have entered the air, risk pollution and contamination from inhaling these chemicals. c. Who is responsible for the clean...
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...Chemical Agents Choose a specific chemical from the list of chemicals provided in the Word file. To randomize the assignment for the class, you must choose a chemical whose name starts with the same letter as the first letter of your last name (* see exceptions below). You must investigate and report on the chemical using these headings: ➢ Chemical name: List your chemical’s name, and its CAS Registration Number [CAS Reg. no.] as found in the attached pdf document entitled Ontario OEL. ➢ Hazardous physical/chemical properties: Describe the basic properties and those that contribute to make your chemical hazardous to humans. Provide specific data from your sources, and explain in plain language. Data & comments about hazards should be linked together. ➢ Routes of entry: Describe the routes of entry of your chemical into the body (link to the expected ‘states’ of the chemical) ➢ Effects on the body: Describe the effects on the human body. ➢ Sources of exposure: (Industry and/or process) ➢ Control Measures: Describe the measures required to safely control your chemical in the workplace, beginning with pre-contact controls {Engineering, Policy & Procedure, Admin (training) & PPE} and concluding with post contact controls. ➢ MSDS Attach a copy of one (1) MSDS. Your chemical must have at least 80% concentration in this document. ➢ Bibliography: - Must site at least 5 sources from the Internet, including ONLY 1 MSDS - Do not use other sources (textbooks...
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...weaponry/hazard symbol * 3.2 Biological weaponry/hazard symbol (3) Treaties * 1 General * 2 Delivery systems * 3 Biological weapons * 4 Chemical weapons * 5 Nuclear weapons * 5.1 Non-proliferation * 5.1.1 By region * 5.2 Weapons limitation * 5.3 Cooperation (4) Nuclear (or) Atomic (4.1) Nuclear warfare * 1 Types of nuclear warfare * 2 History a. 2.1 1940s i. 2.1.1 Atomic bombings of Hiroshima and Nagasaki ii. 2.1.2 Immediately after the Japan bombings b. 2.2 1950s c. 2.3 1960s d. 2.4 1970s e. 2.5 1980s f. 2.6 Post–Cold War g. 2.7 Sub-strategic use * 3 Nuclear terrorism * 4 Survival (4.2) Nuclear Weapons * 1 Types * 1.1 Fission weapons * 1.2 Fusion weapons * 1.3 Other types * 2 Weapons delivery * 3 Nuclear strategy * 4 Governance, control, and law * 4.1 Disarmament * 4.2 United Nations * 5 Controversy * 5.1 Ethics * 5.2 Notable nuclear weapons accidents * 5.3 Nuclear testing and fallout * 5.4 Public opposition * 6 Costs and technology spin-offs * 7 Non-weapons uses * 7.1 Civil engineering and energy production * 7.2 Physics * 7.3 Propulsion use * 7.4 Asteroid impact avoidance (5) Chemical (5.1) Chemical warfare * 1 Definition * 2 History * 2.1 Ancient times * 2.2 Early modern era * 2.3 Industrial era * 2.3.1 World War I...
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...be penalized. If you make a mistake, just draw a single line through it, not a childish scribble to hide all traces! • All data will be recorded in your lab notebook at the moment it is generated. No notes shall be written on scraps of paper or memorized for later. Other notes about the lab notebook: All pre-lab and experimental work is hand-written in your lab notebook. Make sure that your notebook has duplicate pages because you will be tearing out the perforated copy pages (usually yellow or blue) and turning them in with your lab report for grading. You will turn in all the pages used from the start of your pre-lab work through until the end of the post lab work. Each lab notebook must contain a Table of Contents that lists the...
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...concepts Objectives-Students will be able to: * [Retrieval] * Define chemistry * Define and list each of the steps of the scientific method * Define physical and chemical properties * Define extensive and intensive properties * Define density * [Comprehension] * Explain in their own words or represent symbolically the meaning of: * Chemistry * Steps of the scientific method * Physical and chemical properties * Extensive and intensive properties * Density * [Analysis] * Identify and explain similarities and differences between the different steps of the scientific method * Analyze errors with the application of the steps of the scientific method * Identify and explain the similarities and differences between physical and chemical properties * Identify and explain the similarities and differences between extensive and intensive properties * Use the concept of density to solve chemical problems * Knowledge Focus A.2: Dimensional analysis Objectives-Students will be able to: * [Retrieval] * List/recognize the SI units for the main units of measurement * List/recognize all the SI units prefixes and associated exponentials * List/recognize the most important non-SI units * Define dimensional analysis * Execute unit conversion...
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...the emergency response plan was put into action by the incident commander. The emergency response team was not able to isolate the source, ultimately turning over the incident command and control of the fire to the fire department upon their arrival (Meyer, 2014). Two of the hazardous material that are used to manufacture polyurethane is toluene diisocyanate (TDI), and methylene diphenyl diisocyanate (MDI). Toluene diisocyanate contains a list of hazard that can be identified on the Safety Data Sheet, it is extremely toxic of inhaled, it is considered a carcinogen, and can cause skin reactions....
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...homeostasis. Define the terms anatomy and physiology in reference to the human body. (LECT & LAB) Describe each of the following levels of organization of the human body: chemical, cellular, tissue, system, organism. (LECT & LAB) Identify the principal systems of the body. (LECT & LAB) Describe the standard anatomical position of the human body. (LECT & LAB) Compare common anatomical terms used to describe the various regions of the human body. (LECT & LAB) List by name and location the principal body cavities. (LECT & LAB) Define homeostasis and explain the effects of the lack of homeostasis on the body's function. (LECT & LAB) Describe the chemical level of organization of the human body. Describe the interrelationship of matter, elements, and atoms. (LECT) Identify by name and symbol the principal elements of the human body. (LECT) Diagram and label the structure of a typical atom. (LECT) Describe the function of electrons located in incomplete outer energy levels. (LECT) Define the terms isotope and radioisotope and give their functions. (LECT) Describe the three types of chemical bonding (ionic, covalent, hydrogen) and give an example of each. (LECT) Describe what happens during a chemical reaction. Give three types of chemical reactions. (LECT) Interpret the information given in chemical notations. (LECT) Define ion, oxidation, and reduction. (LECT) Distinguish between organic and inorganic molecules. (LECT & LAB) Define solution, solute, and solvent...
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...and Why That's Good”, where he argued that the same chemicals in a vaccine are also found in bananas and other foods. He states, “Want to see just a few of the chemicals that get pumped into the bodies of babies from the average vaccine? Try these: 2-methyl-butyraldehide, ethyl ethanoate, tocopherol, alpha-terpanine and a wicked slug of terpinyl-acetate…….Oh wait, my bad! Those aren’t the ingredients in a vaccine. Those are the ingredients in a blueberry. And the same is true for bananas and eggs too.” While he is correct, his concept is extremely flawed. He only named five of the ingredients found in some vaccinations, while failing to mention...
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...materials). If a waste is taken into account as solid waste, it should then be determined if it is unsafe waste (§262.11). Wastes area unit outlined as unsafe by Environmental Protection Agency if they are named on one or any of the four lists of unsafe wastes situated in portion D of half 261 (F, K, P, U) or if they exhibit one in every of four characteristics situated in portion C of half 261 (characteristic wastes). Listed Wastes Wastes area unit are listed as unsafe as a result that they are noted to be harmful to human health and also the surroundings once not managed properly, in spite of their concentrations. Environmental Protection Agency has studied and listed as unsafe many specific industrial waste streams. These wastes area unit represented or listed on four completely different lists that area unit found within the rules at half 261, Subpart D. These four lists are: The F list - The F list designates as unsafe specific wastes from sure common industrial or producing processes. As a result of the processes manufacturing these wastes will occur in several sectors of business, the F-listed wastes area unit called wastes from non-specific sources. The F list is statute within the rules at for 40 CFR §261.31. The K list - The K list designates...
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