Matter of Mogharrabi‚ 19 I&N Dec. 439 (BIA 1987) Decided by Board June 12‚ 1987 FACTS: Mogharrabi and his wife were permitted into the United States from Iran as nonimmigrant students. They stayed in the United longer than the initial time allowed and arrangements were made for them to be deported. Mogharrabi filed for asylum to void the deportation for fear of his persecution because of his political opinion if he were to return to Iran. He claimed a well-founded fear of persecution based
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Unit 1 Notes Chapter 3 Matter Observation v. Inference • Observation: • Quantitative or qualitative • ___________________________________________________ • Inferences: • Something that you know from ____________________________ • Ex. “made of wood”‚ “wax” Physical v. Chemical Properties • Physical Properties: • Can be observed without changing the chemical makeup of a substance • Examples: • Chemical Properties: • Describes a chemical change & the kinds of chemical reactions that
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Chemistry and Matter Rich McConnell‚ CH-201 Grantham University Chemistry and Matter 1. A scientist who is trying to make an insecticide that is more toxic to mosquitoes than to humans would be involved in ________. 1. Basic research 2. Applied research 3. Technology 4. Serendipity 2. How is chemistry defined? Science can be looked at like at tree‚ within this tree there are different branches one of which is Chemistry which studies composition and properties of matter and the changes they go through
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States of Matter Jun Ruan Solid Molecules are tighly packed and harder than liquids and gases. Examples: Ice‚ Coal‚ Salt Amorphous solid-a solid which has a disordered atomic structure. Examples: Glass‚ Rubber Liquids flowing freely but of constant volume. Examples: Water‚ Mercury‚ Alcohol Viscosity-a measure of its resistance to gradual deformation by shear stress or tensile stress. Surface tension-the force that acts on the surface of a liquid and tends to minimize the surface
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States of matter are the distinct forms that different phases of matter take on. Historically‚ the distinction is made based on qualitative differences in bulk properties. Solid is the state in which matter maintains a fixed volume and shape; liquid is the state in which matter maintains a fixed volume but adapts to the shape of its container; and gas is the state in which matter expands to occupy whatever volume is available. This diagram shows the nomenclature for the different phase transitions
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Channels of Distribution‚ Logistics‚ and Wholesaling The Importance of Distribution: Most producers use intermediaries to bring their products to market. They try to develop a distribution channel (marketing channel) to do this. A distribution channel is a set of interdependent organizations that help make a product available for use or consumption by the consumer or business user. Channel intermediaries are firms or individuals such as wholesalers‚ agents‚ brokers‚ or retailers who help
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Chapter 2 The Components of Matter Elements‚ Compounds‚ and Mixtures: An Atomic Overview An element consists of only one kind of atom. An element is one kind of substance – the composition is fixed. Each element is unique because the properties of its atoms are unique. Molecules are structures containing two or more atoms chemically bound together. Diatomic molecules are two-atom molecules such as elemental oxygen. A compound is a type of matter in which two or more different elements are chemically
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States of matter Four fundamental states: Solid - In a solid the particles (ions‚ atoms or molecules) are packed closely together. As a result‚ a solid has a stable‚ definite shape‚ and a definite volume. Solids can only change their shape by force‚ as when broken or cut. Liquid - A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. The volume is definite if the temperature and pressure are constant
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Money Matters It’s no secret that schools in high-income communities are better than those in low- income communities‚ or the fact that students are being better prepared for desirable jobs. It’s astonishing to learn how huge the difference in education from wealthy communities and those from a poor community. In “Social Class and the Hidden Curriculum of Work” by Jean Anyon‚ Anyon observes five different schools for a whole school year of fifth graders; two working class schools‚ one middle-class
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Analysis Questions: Cycles of Matter 1. Explain the role of decomposing bacteria in the carbon and nitrogen cycles. In the carbon cycle‚ decomposing bacteria release carbon from the decaying bodies or waste into the atmosphere. Without them‚ it won’t be able for any organism to access the carbon stored in dead bodies. In the nitrogen cycle‚ decomposing bacteria breaks down animal waste‚ which creates ammonia and nitrate products rich in nitrogen. Although no animals or plants cannot directly
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