Discussion Questions 1. Why do different metals have different characteristic flame test colours? The photons emitted during the test precisely match the quantum energy difference between the excited state and the ground state. For different elements the spacing between the ground state and the higher energy levels is different. So different elements have different flame test colours. 2. Most salts contain a metal and a non-metal. Look at the compounds we tested and determine whether it is
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standardized test scores accurately describe the achievements of a student? Regardless of what reports and newspapers suggest‚ scores on standardized tests do not reflect a student’s achievements or abilities. Standardized tests such as the SAT and ACT are the focus of argument not only among teachers and educational reformers‚ but also among students. Opponents agree that the standardized tests are weighted too heavily‚ and that test anxiety obstructs learning‚ and finally‚ that standardized tests are not
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CONSTRUCTING and SCORING ESSAY TESTS* An essay test permits direct assessment of the attainment of numerous goals and objectives. An essay test demands less construction time per fixed unit of student time but a significant increase in labor in time and scoring. GENERAL TYPES OF ESSAY ITEMS* >EXTENDED RESPONSE ESSAY ITEM- is one that allows for an in-depth sampling of a student’s knowledge‚ thinking processes‚ and problem solving behavior related to a specific topic. >RESTRICTED RESPONSE
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This paper addresses four forecasting methods. The first is the Delphi technique‚ which could be considered one of the core tools of future forecasting. The remaining three are interrelated and consist of environmental scanning‚ issues management‚ and emerging issues analysis. These three have in common the aim of surveying the environment to determine likely issues that are going to impact upon an organization‚ community‚ or individual. Although‚ they are similar in this regard‚ they do differ on
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Throughout in this text V will be a vector space of finite dimension n over a field K and T : V → V will be a linear transformation. 1 Eigenvalues and Eigenvectors A scalar λ ∈ K is an eigenvalue of T if there is a nonzero v ∈ V such that T v = λv. In this case v is called an eigenvector of T corresponding to λ. Thus λ ∈ K is an eigenvalue of T if and only if ker(T − λI) = {0}‚ and any nonzero element of this subspace is an eigenvector of T corresponding to λ. Here I denotes the identity mapping
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Test 3: DIRECTIONS (chapters 12‚13‚14) (20 questions worth total 10 points). • Save the test as a word doc. NOT PDF Save the file with your last name‚ first name‚ test 1 . For example:Harmon_Susan_test1 • You will get a 0 if you do not save it this way and as a word doc. • Open Book test‚ not timed‚ not proctored‚ 24 hours to complete. • Due Sunday‚ November 2 by 5 pm‚ via email. The test will be posted in the Announcement page‚ at the Assignment page and sent to each student via email by Sunday
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The Spot-Overlay Ames Test was used in the lab to find the mutagenesis of Diet Coke and ThermaFlu. Along with these substances three mutant strains of salmonella were also tested. TA 1535‚ TA 1537‚ TA 1538 all lacked the ability to grow the amino acid histidine unless reverted back by the potential mutagens. After the first week of testing‚ results showed that both of the potential mutagens‚ Diet Coke and ThermaFlu were in fact mutagenic. This was established if colonial growth was at least twice
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economics develops and evolves‚ the current mental model which is perfect and successful will become old and outdated. That’s why refreshing the organization’s leaders mental method is the main requirement of the strategic management competency. There are two categories of Mental Model and they are based on the acquisition method. Explicit Models are the models which we learnt from learning various conditions for example‚ physics‚ maths‚ economics and so on‚ it is when you study the model from out
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Irrigation and it’s Methods Irrigation may be defined as the science of artificial application of water to the land or soil. It is the replacement of rainfall with water from another source in order to grow crops. Several methods of irrigation are used today depending on the water availability and the type of crop to be irrigated. Some of these methods are: 1) Flood irrigation: In flood irrigation‚ a large amount of water is brought to the field and flows on the ground among the crops
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determining the extent to which students achieve instructional objectives. It is a scheme for collecting evidence of what learners accomplish through process of teaching and judge the direction and extent of changes. Testing is a continuous process and forms an integral part of the total system of education and in vary closely related to educational objectives. The purpose of this evaluation is to make provisions for guiding the growth of the learners to diagnose their strengths and weakness and point
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