Chemistry in the kitchen Teacher’s guidelines Lorena Payà Vayà Llicència C Curs 2007/2008 Index Unit 1. Can we do chemistry in the kitchen? 1.1. Strawberry smoothie. 1.2. Laboratory vs. Kitchen. 1.3. Safety in lab and in the kitchen. 1.4. Cutting onions or a scientific investigation. 3 Unit 2. How do we measure in the kitchen? 2.1. How do we measure the quantity of each ingredient in our cooking? 2.2. An Old Scottish Recipe or how to convert units. 2.3. Does one kilo of sugar
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Take-Home Exam Exercise 1 (a) If the emissions in the area are left unregulated then the two factories will emit as much as they can‚ which means there will be zero abatement (MAC=0). So we have: Factory A: MACA=0 4000-EA=0 EA=4000 Factory B: MACB=0 4000-4EB=0 EB=1000 For the socially optimal level of emissions we have: MACA=4000-EA EA=4000-MACA MACB=4000-4EB EB=1000-0‚25MACB By adding the above by parts we get: E=5000-1‚25MAC MAC=4000-0‚8E The socially optimal level of emissions
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Environmental Economics : Some Basic Concepts 1. Welfare economics Welfare economics is a branch of economics that uses microeconomic techniques to evaluate economic well-being‚ especially relative to competitive general equilibrium within an economy as to economic efficiency and the resulting income distribution. associated with it. It analyzes social welfare‚ however measured‚ in terms of economic activities of the individuals that comprise the theoretical society considered. As such
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Chemistry is the science of matter and the changes it undergoes. The science of matter is also addressed by physics‚ but while physics takes a more general and fundamental approach‚ chemistry is more specialized‚ being concerned with the composition‚ behavior (or reaction)‚ structure‚ and properties of matter‚ as well as the changes it undergoes during chemical reactions. It is a physical science which studies various substances‚ atoms‚ molecules‚ crystals and other aggregates of matter whether in
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BOILING POINT G1 Decreases going down. Because metal bonds get weaker. Less energy is required this metallic bonding. BOILING POINT G 17‚18 Increases. Because the atomic size incrases. The molecules are attracted by intermolecular forces. Going down the group‚ the intermolecular forces increases. More energy is needed to overcome these stronger forces. DENSITY Because mass increases faster than volume. REACTIVITY OF GROUP 1 The number of occupied shells increases. The atomic size increases
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Climate ChangeEnvironmental EconomicsInternational Issues | | | Johannes Jandrisevits Christina Pauschenwein | Autumn term 2010 | | Climate change is becoming an ever more important issue in our lives. We have come to realise that the modern ways of man place an enormous amount of stress on the Earth that nature simply can’t handle. Some of the climatic problems that are developing today‚ such as global warming‚ ozone depletion and El Nino‚ will have severe effects on our ecosystem
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1.2 How have environmental cycles changed? The capacity of ecosystems to provide benefits to humans‚ that is to provide ecosystem services‚ derives from environmental cycles of water‚ nitrogen‚ carbon‚ and phosphorus. These processes have in some cases been significantly modified by human activity. Changes have been more rapid in the second half of the 20th century than at any other time in recorded human history. Water cycle: Water withdrawals from rivers and lakes for irrigation‚ urban uses‚
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he fear is widerspread among environmentalists that free trade increases economic growth and that growth harms the environment. That fear is misplaced. Growth enables governments to tax and to raise resources for a variety of objectives‚ including the atatement of pollution and the general protection of the environment. Without such revenues‚ little can be achieved‚ no matter how pure one’s motives may be. "Marathon runner threatens to pull out of 2008 Olympics fearing Beijing’s air quality"
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The Role Of Chemistry To Our Society Chemistry plays a huge and important role in society‚ with relation to shelter and clothing. For example‚ chemists come up with new paints and epoxy sprays that protect shelters from the wear and tear inflicted by rain‚ wind‚ sun and pollution. These space age coatings and paints are designed to make properties look better‚ perform better and last longer. Thermal chemical compounds may protect rooftops and also help structures stay at the right temperature
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Air Pollution in Kolkata – an economic analysis According to statistics released by the Scientific and Environmental Research Institute‚ quoting government figures‚ Kolkata had a suspended particulate matter (SPM)‚ the measure of pollution‚ at a steep 511 compared to Delhi’s 234 and Mumbai’s 322. That earns Kolkata the crown for the most polluted city in the country – a distinction reserved for New Delhi for last few years. Mumbai is the second most polluted city after Kolkata in terms of air
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