...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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...well get smaller and close the stomata, and the transpiration process will move slower. The osmolarity would be tested with solute concentrations ranging from 0.0 M to 0.6 M. The concentrations increased 0.1 M each time and the solute used was sucrose. The goal of this experiment was to determine which concentration had the least effect on the potato after being incubated. This information helped us estimate the osmolarity of the potato tuber tissue. Our group hypothesis is that the osmolarity of the potato will have the concentration with the 0.1 M solution. This hypothesis is based off the predicted outcome that smaller molarity concentrations will have the least effect on the potato. The more solute added to a solution decreases the concentration of water in most cases (Kosinski). The decrease in water concentration would then lead to a lower weight of the potato tuber once it has finished incubating. Methods & Materials: For experiment A you will need the following items: 1 large potato tuber Forceps petri dish razor blade DI water metric ruler 7 250 mL beakers/ or disposable cups balance that weighs to the nearest 0.01g sucrose...
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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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...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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...MODULE 2: Chapter 1 - Introduction to Statistics & Displaying Distributions with Graphs Presentation and Lecture Notes: 1. Introduction to Statistics & Graphical Presentations (59.3 MB – Voice-Over PowerPoint Presentation saved as a WMV Windows Media Audio/Video file) Note: The same presentation is also saved and posted in a handout format (as a PDF file) for those of you who wish to print and study from a paper copy. Both of these files are accessible from MODULES > MODULE 2 area of the course website. Required Readings: 1. Read Chapter 1 (pages 1 – 25) from your textbook. Activities, Module-specific Assignments and Timeframe: This module begins on Tuesday (Sept 2nd) and ends on Sunday (Sept 7th). This means that module activities/assignments are to be completed by the end date. Replies and further forum discussions can go on after the end date. Listen/View and study the presentation along with the required reading. After finishing the readings, you are 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...
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...Item #1 Problems: * Emergency meeting at 3:30 * Has to find a way to finish work for the day and catch a flight at 11:30(most important) * 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...
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...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 of matter: ¥ solid, liquid...
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...Lab #1 Reaction Kinetics in Redox Reactions Procedure: Step 1: Prepare solution of sodium thiosulfate, place 0.25gm (250 mg) of Na2S2O3 in 100ml beaker, add 20 ml of water and mix until dissolved. Step 2: Prepare solution of potassium iodine. Add 10 gm of KI to a 100 ml beaker and add 20 ml of water and mix until dissolved. Step 3: Obtain a 600 ml beaker, add KI and Na2S2O3 solutions, then add 60ml of 1M HCl. Step 4: Finally add 50ml of .1M H2O2, as soon as the H2O2 is added start timing the reaction. Stop timing when the Iodine appears (solution changes color). Record time. Step 5: Varying [H2O2] while holding [I-] constant. (2 more runs) Repeat step 1 Repeat step 2 except with 20 gm and then 40 gm of KI Repeat step 3 Add extra 150 ml and then 450 ml of water to the 600 ml beaker Repeat step 4, record times for 300 ml and 600 ml solutions Step 6: Varying [I-] while holding [H2O2] constant. (3 runs) Repeat step1 Repeat step 2 Repeat step 3 First run add no extra water, second run add 100 ml , third run add 300 ml of water Repeat step 4, first run add 50 ml, second run 100 ml and third run add 200 ml of .1M H2O2 Record times for 150ml, 300 ml and 600 ml solutions Observation: Times (secs): run 1: 48 run 2: 48 run 3: 47 run 4: 48 run 5: 45 run 6: 44 rate = d[H2O2]/dt = (moles of H2O2 consumed) / (Total volume * Reaction Time) moles of H2O2 consumed = .5 * moles S2O3 2- moles S2O3 2- = .25...
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...reactivity. These nitrogen based compounds are found in plants and often taste bitter 2. Alkaloids can be found in different forms such as nicotine, morphine, or cocaine. The structure of caffeine is shown below along with the purine ring. Figure 1: Structure of purine and caffeine Caffeine is found in a number of foods and beverages. Such has chocolate, soda, and over the counter medication. The purpose of this experiment was to isolate caffeine that is found in tea by using the techniques of extracting, separating, drying, and sublimation. To do so, caffeine must be introduced to a solvent that is both volatile and insoluble to water; a perfect example is dichloromethane. Caffeine has a greater affinity for dichloromethane and will easily dissolve in this solvent over water; however, caffeine is not the only organic substance found in tea that is capable of reacting with dichloromethane. Along with caffeine, tea contains another substance, tannins, which are capable of dissolving in water as well 2. This is due to dipole-dipole interactions that result from the greater polarity of caffeine and hydrogen bonds between caffeine and water. To prevent the tannins from being mixed in with the caffeine, a common salt can be introduced to solution to revert back tannins to phenolic anions...
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...Chapter 13 Homework Problems Notes: 1.) Hand in your answers/work on a separate sheet (not a printout of these problems). 2.) You can receive partial credit even if your answer is incorrect, but only if you show your work! 3.) Be sure to include units (amu, g, mL, etc.) on any answers that need them. This is worth points! 4.) Be sure to use the correct number of significant figures in your answers. This is worth points too! 1. Tell what kinds of intermolecular forces could occur between the following pairs of solute and solvent, and place the list in order from weakest to strongest solute-solvent attraction. Some pairs may experience more than one type of force. a. water dissolved in ammonia b. NO dissolved in H2S c. CO2 dissolved in ammonia d. Mg(NO3)2 dissolved in water 2. At sea level, the partial pressure of O2 is 0.21 atm. However, the Dead Sea is not at sea level -- it’s at a much lower altitude, where the atmospheric pressure is 806 mmHg and the temperature is 20˚C. Use Henry’s Law and Table 13.2 to calculate the molar concentration of O2 in the Dead Sea. 3. Suppose we make a solution by dissolving 42.5 g of I2 in 1.50 mol of CCl4. a. What is the molality of this solution? b. Suppose we wanted to use our 42.5 g of I2 to make a 0.500 m solution. What volume of CCl4 would we need? The density of CCl4 is 1.589 g/mL. 4. We dissolve...
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...Briefly spray the pot through the mesh netting so that the pesticide comes into contact with the flies. Before spraying make sure none of the flies are on the netting, as otherwise they will get a larger dose than those on the bottom of the container. You should also use the same procedure for each pot. Note that since there are only 11 pots, 1 pot will be the control and 5 pots will be used for each pesticide. Ensure that you use the following concentrations of rotenone (0.03, 0.1, 0.3, 1 and 3x for Rotenone) and primicarb (3 x 10-8, 3 x 10-7, 3 x 10-6, 3 x 10-5 and 3 x 10-4M for pirimicarb). It is important that you start with the control, then the most dilute solution of one of the pesticides. Work your way up to the top concentration of the pesticide, then thoroughly wash the spray top with distilled water. Then you should use the spray top to dispense control solution in order to clean the inside of the spray. Now you can move onto the most dilute solution of the 2nd pesticide and work your way up to the top concentration. When dispensing pesticide solutions it is essential that you use a new clean pipette tip for each solution to avoid cross contamination of...
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...* Written Case Analysis Content and Format Case Studies write the following information and number it 1 through 8 and use section headings: 2. The case number, case title, and class date. 3. A summary of the case. [1 paragraph] This will require you to read the case several times. Do not just copy sentences from the case. Instead, express in your own words the essence of the case. 4. A 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...
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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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...reaction: 1) ____ Na + ____ FeBr3 ( 2) ____ NaOH + ____ H2SO4 ( 3) ____ C2H4O2 + ____ O2 ( 4) ____ NH3 + ____ H2O ( 5) ____ PbSO4 + ____ AgNO3 ( 6) ____ PBr3 ( 7) ____ HBr + ____ Fe ( 8) ____ KMnO4 + ____ ZnCl2 ( 9) ____MnO2 + ____ Sn(OH)4 ( 10) ____ O2 + ____ C5H12O2 ( 11) ____ H2O2 ( 12) ____ PtCl4 + ____ Cl2 ( Predicting Reaction Products (cont.) For each of the following double replacement reactions, determine what the products of each reaction will be. When you have predicted the products, balance the equation and use a solubility to determine which of the products (if any) will precipitate (be insoluble). Assume all reactions take place in aqueous solutions (aq). 1) ____ Ca(OH)2 + ____ HF ( 2) ____ Pb(NO3)2 + ____ K2CrO4 ( 3) ____ NaC2H3O2 + ____ H2SO4 ( 4) ____ Cu(OH)2 + ____ H3PO4 ( 5) ____ AgNO3 + ____ Na2CO3 ( 6) ____ Pb(OH)2 + ____ Hg2S ( Predicting Reaction Products - Solutions Balance the equations and predict the products for the following reactions: 1) 3 Na + 1 FeBr3 ( 3 NaBr + 1 Fe 2) 2 NaOH + 1 H2SO4 ( 1 Na2SO4 + 2 H2O 3) 1 C2H4O2 + 2 O2 ( 2 CO2 + 2 H2O 4) 1 NH3 + 1 H2O ( 1 NH4OH 5) 1 PbSO4 + 2 AgNO3 ( 1 Ag2SO4 + 1 Pb(NO3)2 6) 4 PBr3 ( 1 P4 + 6 Br2 7) 2 HBr + 1 Fe ( 1 H2 + 1 FeBr2 OR 6 HBr + 2 Fe ( 3 H2 + 2 FeBr3 8) 2 KMnO4 + 1 ZnCl2 ( 2 KCl + 1 Zn(MnO4)2 9) 1 MnO2 + 1 Sn(OH)4 ( 1 Mn(OH)4 + 1 SnO2 ...
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...Project Present By 1. Atthaya Pancharin 53441642 2. Korntatan Patarataweetip 53441602 3. Panchabhorn Bodhintrsopon 53441617 4. Pikul Sithichan 53441620 5. Varatip Silapapong 53441625 May 2011 สารบัญ ประวัติความเป็นมา 3 ความหมายของตราสัญลักษณ์รวงข้าว 3 ความหมายของสีในสัญลักษณ์ ของธนาคารกสิกรไทย 4 ภารกิจ 4 วิสัยทัศน์ 4 ค่านิยมหลัก 4 นวัตกรรม กับธนาคารกสิกรไทย ตั้งแต่อดีตจนถึงปัจจุบัน 5 สรุป นวัตกรรมต่างๆของธนาคารกสิกรไทย 15 นวัตกรรมของธนาคารกรุงเทพ 19 บทวิเคราะห์ 20 จุดเปลี่ยนธนาคารกสิกร ผู้นำนวัตกรรมการเงิน 20 การสร้าง Positioning 24 กลยุทธ์การบริหาร Strategic Management 26 ตารางการเปรียบเทียบสินทรัพย์รวม และกำไรสุทธิ ของธนาคารกสิกรไทย และธนาคารกรุงเทพ ระหว่างปี 2549-2553 29 ข้อเสนอในการทำ Innovation เพิ่ม/ลด/เปลี่ยน 30 วิธีการวางแผนและ ดำเนินงานภายในกลุ่ม 31 วิธีการค้นหาข้อมูลต่างๆ 31 แหล่งข้อมูลที่ใช้ในการค้นหา 32 แผนการดำเนินการ 32 ประวัติความเป็นมา ธนาคารกสิกรไทย ก่อตั้งเมื่อวันที่ 8 มิถุนายน พ.ศ. 2488 ด้วยทุนจดทะเบียน 5 ล้านบาท และพนักงานชุดแรกเริ่มเพียง 21 คน มีอาคารซึ่งเป็นสาขาสำนักถนนเสือป่าในปัจจุบันเป็นที่ทำการแห่ง แรก การดำเนินงานของธนาคารประสบความสำเร็จเป็นอย่างดี เพียง 6 เดือน หรือเพียงงวดบัญชีแรกที่สิ้นสุด ณ วันที่ 31 ธันวาคม พ.ศ. 2488 มียอดเงินฝากสูงถึง 12 ล้านบาท มีสินทรัพย์ 15 ล้านบาท จากจุดที่เริ่มต้นจนถึงวันนี้ ธนาคารกสิกรไทยเติบโตอย่างมั่นคง ณ วันที่ 31 มีนาคม พ.ศ. 2554 มีทุนจดทะเบียน 30,486 ล้านบาท มีสินทรัพย์จำนวน 1,677,862 ล้านบาท เงินรับฝากจำนวน 1,182,390 ล้านบาท...
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