...Detailed Lesson Plan (Grade 7) 1. Objectives After providing the necessary materials, each student; 1.1 investigates the different types of solutions: -unsaturated -saturated -supersaturated 1.2 performs an actual activity about solubility. 1.3 values the common solutions that can be found at home and can be used in daily living. 1. Learning Tasks 2.1 Topic: Solutions 2.2 Concept: The unsaturated solution has a less amount of solute to be dissolved. The saturated solution can hold no more solute to be dissolved. The supersaturated solution cannot hold more solute. 2.3 Materials 2.3.1 Textbook/Other Reference -Science Grade 7: Matter (K-12 Curriculum), pages 1-16 - http://www.infoplease.com/encyclopedia/science/solution-heat-solution.html 2.3.2 Instructional Materials - video clips, materials enumerated for the experiment and activity sheet. 2. Methodology 3.1 Daily Activities 3.1.1 Prayer/ Greetings Christ Jesus Whom we open our eyes, may you be there; When we open our ears, may you be there; When we open our mouths, may you be there; When we open our diaries, may you be there. Help us to see with your eyes; Help us to hear with your ears; Help us to speak your truth in love; Help us to make time for you… for others… for ourselves. Amen. 3.1.2 Checking of Attendance 3.1.3 Checking of Assignment 3.2 Preparatory Activities 3.2.1 Review Teacher: Class...
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...FUNDAMENTALS OF SURFACE MODES: ¥ COLLOIDS ¥ means ÒglueÓ in Greek ¥ was coined in 1861 by Thomas Graham. ¥ ¥ ¥ ¥ ¥ WHAT IS A COLLOID? usually consists of two phases; one continuous phase in which the other phase is dispersed. Size of particles: larger than the size of molecules and small enough for the dispersed phase to stay suspended for a longer period of time. ¥ No strict boundaries for the size limits. OFFICIAL DEFINITION ¥ In 1903 Wolfgang Ostwald formulated the official definition of a colloid: ¥ a system containing entities having at least one length scale in between 1nm and 1µm. ¥ For smaller particles there is no distinct boundaries between the phases and the system is considered a solution; ¥ for larger entities the particles will fall to the bottom due to the gravitational force, and the phases are separated. 1 2 3 MESOSCOPIC PHYSICS ¥ The particle size is in the so-called mesoscopic range in between the macroscopic and microscopic limits. LARGE INTERFACIAL AREA ¥ One very important quality of the colloids is the large interfacial area between the dispersed and the continuous phases. WHAT EFFECTS HAS THIS? ¥ This means that interface effects and hence the electromagnetic surface modes, are very important for the properties of the colloids. ¥ It costs energy to create this much surface and the particles would clump together if this isnÕt prevented. ¥ Usually the particles are charged and hence repel each other. 5 6 4 Four states...
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...in proving solutions. * Innovation driven firm, which consists of employees from wide ranges of background, both culturally and technically. This helped to provide a diverse way for approaching a problem and coming up with its solution. People with different perspectives helped to modify and refine the solutions, which helped IDEO to provide innovations to wide ranges of services. * Structurally the firm’s management is flat, meaning that there is no hierarchy and bureaucracy within the project team. This helps everyone to feel essential to the team and contribute equally. * They give a lot of emphasis on trying to develop an insight to the actual problem clients are facing, which enables them to use general tools employed in those types of problems. Their product development process is well thought out, tried and tested. They depend on brainstorming sessions to come up with ideas that provide sustained creative solutions. * IDEO is evolving constantly with time, focusing on working more closely with its clients and external agencies in order to provide them better solutions and reduce their project execution times. * IDEO had a unique way of approaching a problem. It didn’t come up to a company with the symptom of a problem but rather focused on unearthing the root of the problem. It’s not that it had extensive knowledge on the field of the company it was helping out, but used the general ways of approaching and providing a creative solution to any field...
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...in proving solutions. * Innovation driven firm, which consists of employees from wide ranges of background, both culturally and technically. This helped to provide a diverse way for approaching a problem and coming up with its solution. People with different perspectives helped to modify and refine the solutions, which helped IDEO to provide innovations to wide ranges of services. * Structurally the firm’s management is flat, meaning that there is no hierarchy and bureaucracy within the project team. This helps everyone to feel essential to the team and contribute equally. * They give a lot of emphasis on trying to develop an insight to the actual problem clients are facing, which enables them to use general tools employed in those types of problems. Their product development process is well thought out, tried and tested. They depend on brainstorming sessions to come up with ideas that provide sustained creative solutions. * IDEO is evolving constantly with time, focusing on working more closely with its clients and external agencies in order to provide them better solutions and reduce their project execution times. * IDEO had a unique way of approaching a problem. It didn’t come up to a company with the symptom of a problem but rather focused on unearthing the root of the problem. It’s not that it had extensive knowledge on the field of the company it was helping out, but used the general ways of approaching and providing a creative solution to any field...
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...list of what you think are the 10-15 most important facts/factors in the case. 5. The most important health administration problem/issue to be solved in the case. [1 sentence]. List other secondary problems in the case. 6. Your recommended solution for the case (a.-d. below). Make clear specific realistic recommendations. There must be a clear logical sequence to your thoughts and recommendations. (2-3 Pages) a. At least three possible realistic alternative solutions for the most important problem (stated above for 5) b. Criteria to evaluate possible alternative solutions. For example: acceptability to stakeholders, needed resources, legality, timing, cost-effectiveness, ability to implement, side effects, qualifications, statistical data, financial data, ethical considerations, fit with case facts, likelihood of actually solving the problem, etc. c. Evaluation of the possible alternative solutions (6a) using the criteria (6b). (2 pages) d. Your recommended solution for the problem, based on 6a, 6b, and 6c. Justify your recommendation. 7. Specific MBA/MHA tools, methods, techniques, principles, theories, models, etc. from MBA courses that you used for this case. List specific tools (e.g Risk Management, Do not list general subjects (e.g., finance, leadership). 2-3 sentence explanations * SWOT Analysis, * Community Need Assessment, * Feasibility Study, * Demographic Study, * Scored Card, * Employ Engagement, * Cost-Benefit...
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...COLLIGATIVE PROPERTIES: FREEZING POINT DEPRESSION AND MOLAR MASS: AIM The aim of the experiment is to become familiar with the colligative properties and to use them to determine the molar mass of a substance. THEORY A solution consists primarily of solvent and therefore, most of the solution’s properties reflect the solute’s properties. The physical properties that the solution and solute do not share are known as colligative properties and they depend solely on the solute concentration. Some of these properties include vapor pressure lowering, boiling-point elevation, freezing point lowering, and osmotic pressure. The solvent boils when the vapor pressure, or tendency of solvent molecules to escape, is equivalent to the atmospheric pressure. At this moment, the gaseous and liquid states of the solvent are in dynamic equilibrium and the molecules change from the liquid to the gaseous states and from the gaseous to liquid states at equal rates. The dissolution of a solute with very low vapor pressure, or a nonvolatile solute, raises the boiling point and lowers the freezing point. Similarly, anti-freeze lowers the freezing point and lowers the boiling point. The colligative-property law describes these effects, stating that the "freezing point and boiling point of a solution differ from those of the pure solvent by amounts that are directly proportional to the molar concentration of the solute" (Brown, 203-204). The colligative-property law can be expressed using the equation: D T =...
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...Solutions to Grooming Teens for Adulthood Reasoning and Problem Solving CST 1 November 30, 2009 To solve a problem one must often dive beneath the surface of the reflected obvious to reveal the rest of the issue hidden in the depths below. In Task one for this course the question of what is the best way to prepare teen’s for a successful adulthood has been addressed through several viewpoints and approaches. Just as there are multiple approaches in rearing children, there does not appear to be a single solution to the problem. Upon investigation it quickly becomes apparent that various groups can look at the same issue and will ultimately form different solutions that reflect their own skew on the problem. A closer look at example solution’s utilizing life skills through school settings, community resources, and Socratic home environments will demonstrate this concept. As an educator I believe that preparation is gleaned through understanding and understanding is gleaned from education. My solution would involve taking an active approach in educating the future educator by preparing the young to facilitate life skills for themselves and their own children one day. Equipping children with life applications of what they potentially will face as an adult is much like training a soldier for battle. Our county does not expect our military personnel to enlist and not receive training for what they will expect to encounter. Our children should not...
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...SE571 Course Project: Security Assessment and Recommendations SE571 Course Project: Security Assessment and Recommendations Charlie Furze Professor: Eddie Wachter SE571 Principles of Information Security and Privacy Keller Graduate School of Management July 24, 2015 Table of Contents Executive Summary 1 Company Overview 1 Security Vulnerabilities 3 A Hardware Example Title 3 A Software Example Title 4 Recommended Solutions 5 A Hardware Example Solution 6 A Software Example Solution 8 Impact on Business Processes 9 Budget 10 Summary 11 References 12 Executive Summary The executive summary can’t really be completed until the course project is completed. This is because the section should summarize BRIEFLY the entire paper. There should be one or two sentences about the purpose of the report, a one to two-sentence description of the company and then a quick summary of the two vulnerabilities and the two solutions that you have identified. Company Overview Here you should identify which of the two company scenarios you are using and briefly summarize the organizations products or services, and business processes. Two Security Vulnerabilities Software Vulnerability Remember, you need to choose only two vulnerabilities from the three categories: hardware, software and policy. It is recommended that you make them limited in scope and very specific. Also, before starting on this section, be sure you have a very clear...
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...Recrystallization Par, B., Ramos, S., Reynaldo, H., Roque, P., Servidad, Y., and Soriente, P. 2D-Pharmacy, Group No. 7, Department of Pharmacy, Faculty of Pharmacy, University of Santo Tomas, España Boulevard, 1015 Manila, Philippines Abstract Recrystallization is the primary method of purification used to isolate organic compounds in a supersaturated solution by the difference of solubility at different temperature that results to the separation of the compound from the solution. The purpose of this experiment is to synthesize acetanilide by the acetylation of aniline and to obtain pure acetanilide by purification of the collected crude acetanilide by crystallization. The recrystallizing solvent was chosen among ethanol, water and hexane. The acetanilide was synthesized and formed by acetylation of aniline and acetic anhydride, and it was then cooled to hasten the formation of crystals. After cooling, the mixture was filtered and dried to obtain the crude acetanilide. The crude acetanilide and the chosen recrystallizing solvent was mixed and heated in the water bath until the solid dissolved. The solution was filtered while hot and its filtrate was cooled in an ice bath. The filtrate was then filtered to collect the crystal residue formed. The crystals were washed with distilled water and allowed to dry to obtain the pure acetanilide. The weight of pure acetanilide was measured and the melting point of the pure acetanilide was determined. Based on the results obtained...
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...Conclusion: From my results and the above graph I can see that at 0.4 molar there is no loss or gain in the weight of the potato- a 0% increase in weight. This shows that the concentration of the solution is the same as the concentration in the potato. From this I can conclude that the concentration inside the potato is 0.4 molar. These findings supportmy prediction however I was not sure of the exact concentration and now I have a better estimate, but the general trend is the same. The general trend being, as seen on the graph, that the higher the concentration of sucrose the more weight lost by the potato. This is because of osmosis, where a partially permeable membrane is between two solutions and the water molecules move from the region of higher water potential to a region of lower water potential. The partially permeable membrane only lets through small particles such as water molecules, and larger ones such as sugars can not move through these. So when the concentration of the solution was lower than the potato’s the water diffused from the concentration into the potato, therefore the potato gained mass. The potato cell starts to lose water through plasmolysis when the concentration around it has a higher concentration of sucrose than inside the potato cell. So this causes the water to diffuse out and so the cell becomes flaccid. This meaning as the water has been drawn out and so the cytoplasm shrinks and becomes flabby, and the cell is now plasmolysed. The opposite happens...
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...Osmosis Introduction: Tissues are made up of cells that have the same structure and function. In this experiment osmosis will be measured in a piece of tissue. Water potential can be determined by the changes in dimensions of the tissues when it is placed in solutions of different concentrations. Research Question: What is the effect of sucrose solution on potato cells Hypothesis: Osmosis will increase when the solutions are less concentrated with sucrose Variables: Dependant: Osmosis Independent: Length Materials: 12 large test tubes or specimen tubes with bungs, marker pen, potato chip cutter, scalpel, fine forceps, 3 watch glasses or petri dishes, ruler, 6 labeled beakers one containing 50cm^3 of distilled water and other four containing 50cm^3 of 0.2 mol dm^-3, 0.4 mol dm^-3, 0.6 mol dm^-3 and 0.8 mol dm^-3. Method: 1- Using the potato chip cutter, cut 24 chips from the potato. Cut the chips into 5cm lengths using the scalpel. Be as accurate as possible. Place 4 chips into each of six, labeled test tubes, one test tube for each of the different sucrose solutions. Pour in enough of each respective solution to cover the potato tissue. Put a bung in each one of the test tubes and label this series “potato”. 2- Repeat the method using the apple fruit or turnip root, putting four chips of tissue 5cm long into each of the second series of test tubes. Label these tubes “apple” or “turnip”. 3- Leave the tubes for at least an hour 4- After at least...
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...encouraged to ask question/s that is related to this module and that you don’t know the answer to and want it to be answered. The question/s can be answered by anyone in class. The instructor will allow sometime for other students to answer the question/s before contributing. You can post your questions in MODULE 2 forum under the Discussion Forums. Complete Assignment #2. The assignments are posted in the ASSIGNMENTS area of the website. Even though the homework assignments are not to be turned in and graded, you are strongly encouraged to do them to understand the material and to prepare for quizzes and tests. A complete solution to this assignment will be posted on the course website under ASSIGNMENTS on Thursday (Sept 4th). You are encouraged to review the solutions and compare your work to the solution, ensuring that you understand the reasons the solutions appear as they do. You are also encouraged...
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... * Has no secretary The most important problem would be catching the flight for the meeting in Chicago since it’s an emergency and work related. Solutions: Getting work done for the day on the air plane on the way to the meeting. Call the secretary to find out at least some of the info for the meeting. Item#2 Problems: * Internal politicking in the company * Finding someone to replace F.T. Dickenson * Dealing with eliminating his overtime hours The two most important problems would the politicking, because someone else may feel the same way and decide to leave the company too. Also, finding someone to replace him and do his unfinished work in such a short period of time. Solution: Search for a new employee ASAP. Item#3 Problems: * Workers threatening to walk out over a co-worker * 10 votes to dismiss Foreman Edward George The workers are the most important asset to the company, so their interest should be first. Second, you have to figure out what to do about the votes to dismiss Ed George. Solutions: Talk to Ed George about his problems with his co-workers. Hold a meeting and get even more workers involved in the voting process, the take another vote. Item#4 Problems: * Overloading which can result in interruption of electrical power. * Not being reachable for Southern Power Solution: Contact Southern Power ASAP. See if they could come out and help with the problem. Item#5 Problem: * Balancing your work and his until Wednesday ...
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...Name Date Class COLLIGATIVE PROPERTIES OF SOLUTIONS Section Review Objectives • Identify the three colligative properties of solutions • Describe why the vapor pressure, freezing point, and boiling point of a solution differ from those properties of the pure solvent. Vocabulary • colligative properties • freezing-point depression • boiling-point elevation Part A Completion Use this completion exercise to check your understanding of the concepts and terms that are introduced in this section. Each blank can be completed with a term, short phrase, or number. In a solution, the effects of a nonvolatile _______ on the properties of the solvent are called _______. They include _______ point and vapor pressure _______, and boiling point _______. In each case, the magnitude of the effect is _______ proportional to the number of solute molecules or ions present in the _______. Colligative properties are a function of the number of solute _______ in solution. For example, one mole of sodium chloride produces _______ as many particles in solution as one mole of sucrose and, thus, will depress the freezing point of water _______ as much. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Part B True-False Classify each of these statements as always true, AT; sometimes true, ST; or never true, NT. 11. When added to 1000 g of water, 2 moles of a solute will increase the boiling point by...
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