...ChemLab and select Precipitation Reactions from the list of assignments. The lab will open in the Inorganic laboratory. 2. React each of the cations (across the top) with each of the anions (down the left) according to the data table using the following procedures: Data Table | |AgNO3 (Ag+) |Pb(NO3)2 (Pb2+) |Ca(NO3)2 (Ca2+) | |Na2CO3 (CO32-) |A NR |F Milk color |K Milk color | |Na2S (S2-) |B dark grey |G Dark grey |L NR | |NaOH (OH-) |C light grey |H NR |M Milk color | |Na2S04 (SO42-) |D NR |I Milk Color |N NR | |NaCl (Cl-) |E milk color |J Milk color |O NR | a. Enter the stockroom by clicking inside the Stockroom window. Once inside the stockroom, drag a test tube from the box and place it on the metal test tube stand. You can then click on the bottle of Ag+ ion solution on the shelf to add it to the test tube. Click Done to send the test tube back to the lab. Click on the Return to Lab arrow. b. Place the test tube containing the Ag+ solution in...
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...TYPE YOUR FULL NAME: Clarence Loveless TYPE YOUR FULL NAME: Clarence Loveless UMUC Physical Science 101/103 Lab 1: Introduction to Science INSTRUCTIONS: * On your own and without assistance, complete this Lab 1 Answer Form and submit it via the Assignments Folder by the date listed on your Course Schedule (under Syllabus). * To conduct your laboratory exercises, use the Laboratory Manual that is available in the classroom. Laboratory exercises on your CD may not be updated. * Save your Lab 1 Answer Form in the following format: LastName_Lab1 (e.g., Smith_Lab1). * Submit your document in a Word (.doc or .docx) or Rich Text Format (.rtf) for best compatibility. Exercise 1: Data Interpretation Table 1: Water Quality vs. Fish Population Dissolved Oxygen | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | Number of Fish Observed | 0 | 1 | 3 | 10 | 12 | 13 | 15 | 10 | 12 | 13 | 1. What patterns do you observe based on the information in Table 1? One pattern I observe was in the number of increments. ie….0,1,1,4,4,3,3,4,4,5. The increments would stay the same between for two observation periods with the exception of the 1st and last observation period. 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water. If the amount of dissolved oxygen increases in water then the amount of fish will also increase. 3. What would your experimental approach...
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...Precipitation Reactions from the list of assignments. The lab will open in the Inorganic laboratory. 2. React each of the cations (across the top) with each of the anions (down the left) according to the data table using the following procedures: Data Table | |AgNO3 (Ag+) |Pb(NO3)2 (Pb2+) |Ca(NO3)2 (Ca2+) | |Na2CO3 (CO32-) |A cloudy peach color peach |f. a milky white color |K a milky white color | | |color | | | |Na2S (S2-) |B a cloudy black color |G a cloudy black color |L no reactions | |NaOH (OH-) |C a cloudy bubbly brown color |H no reactions |M a milky white color | |Na2S04 (SO42-) |D no reactions |I turned a milky white color |N no reactions | |NaCl (Cl-) |E a milky white color |J turned a milky white color |O no reaction | a. Drag a test tube from the box and place it on the metal test tube stand. You can then click on the bottle of Ag+ ion solution on the shelf to add it to the test tube. b. Click on the Divide button on the edge of the lab bench four times to make four additional test tubes ...
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...E-Science Lab 1 UMUC - The Science of Life UMUC Biology 102/103 Lab 1: Introduction to Science INSTRUCTIONS: On your own and without assistance, complete this Lab 1 Answer Form electronically and submit it via the Assignments Folder by the date listed on your Course Schedule (under Syllabus). To conduct your laboratory exercises, use the Laboratory Manual that is available in the WebTycho classroom (Reserved Reading or provided by your instructor) or at the eScience Labs Student Portal. Laboratory exercises on your CD may not be updated. Save your Lab 1 Answer Form in the following format: LastName_Lab1 (e.g., Smith_Lab1). You should submit your document in a Word (.doc or .docx) or Rich Text Format (.rtf) for best compatibility. Exercise 1: Data Interpretation Table 1: Water Quality vs. Fish Population Dissolved Oxygen 0 2 4 6 8 10 12 14 16 18 Number of Fish Observed 0 1 3 10 12 13 15 10 12 13 1. What patterns do you observe based on the information in Table 1? The number of fish observed increased as the dissolved oxygen in the water increased. At 6 and 8 ppm, the number of observed fish peaked with a +4 observed fish rate per ppm. At 14 ppm there is a drop in observable fish (-4), and continues to drop as the dissolved oxygen increases. 2. Develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water. If the amount of dissolved oxygen is increased...
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...M1A1 : Research and Design Methodology 2 In order to understand human development one must observe how people change over time at different ages. In the logitudinal design participants or groups are studied over and over again at differetn times and chages are noted as they age. The observation time can very depending on information being gathered. Sometimes lasting short periods of time or years. One benefit of the logitudinal approach is that it would observe each persons performances over the specified time span, allowing to identify any patters or problems in development. Another benefit is that it allows participants to be studied at different ages. Some problems with the longitudinal approach are cohort effects, participants moving or dropping out of the study and participants change to a population that is no longer part of the study, often happening from becoming familiar with test questions and stradigies. In the cross-sectional design people are studied at different ages at the same time. For example if all of the patients at an orthopedic office were interviewed about diet and exercise, all patients were between the ages of two and sixty-four. As a result the practice could then develop a proactive approach to patient education and preventing future injuries that might be prevelant in certain age-related trends. There are problems with this sort of study as well. In the example above...
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...Psy206-1004A-101 Aspects of Psychology Unit 1 IP1 Kevin J. Penn September 10, 2010 American InterContinental University Online Abstract The following compares and contrast of Naturalistic Obersavation and Correlational research. Which includes the research techniques reliability and validity strengths and weakness and generalizability. There are many different ways of collecting information and data to compare different types of things that happen from the past, present and to help predict the future. The research methods that I have compared are Naturalistic observation and Correlational research method. Like any thing else that they are more than one way of obtaining something there are differences and similarities that researchers can use to help them obtain their objective. The correlational research method is one in which the facts are utilizes facts to form links with an assortment of dependent variables. In most cases it is the one that is used first to give a basis before experiments can begin. There are three types of correlational research, observational, survey, and archival (Schmidt, 2000). Observational research includes items that can be tangibly recorded, for example, reporting for work and production. Survey research refers to the statistics that can be found by questioning subjects; for example, comparing the associations between couples who live together and divorce rates (Schmidt, 2000). Archival research deals...
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...the upper part of the rock face their greatest potential exposure to air? Explain. [ 8 ] Click the RESET button to wipe the rock face clean. In the next set of simulation runs, focus on the barnacles. Use the STEP 7 button to run the simulation for seven days at a time. SimBio Virtual Labs® | The Barnacle Zone © 2013, SimBio. All Rights Reserved. 5 [ 8.1 ] Briefly describe what you notice about the distribution patterns for each species on the following days. Do both species settle on the same parts of the rock face? Do their distribution patterns of the rock face change over time? Days 1–7: On day 28: General observations: [ 9 ] Develop a hypothesis for the patterns of distribution for Chthamalus and Semibalanus that you observed. [ 9.1 ] Hypothesis: [ 10 ] Click the TEST YOUR UNDERSTANDING button in the bottom right corner of the screen and answer the question in the window that pops up. SimBio Virtual Labs® | The Barnacle Zone © 2013, SimBio. All Rights Reserved. 6 Exercise 2: Counting Barnacles Connell studied many aspects of barnacle biology to address his question about their distributional patterns. He started out by making (and quantifying) some basic observations. Connell did A LOT of barnacle-counting by hand. Fortunately, you have some handy tools to simplify this process. This exercise will introduce you to your virtual SAMPLING tool, which creates a sampling transect. In this type of sampling, the investigator establishes a line of fixed length...
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...Observations of Chemical Change and Physical Change Emily Fromme July 7, 2015 Purpose: To perform a variety of chemical reactions and make scientific observations to describe the chemical change. Equipment: Pie pan, dish soap, distilled water, matches or lighter, pair of sunglasses, paper towel, scissors, sheet of black paper, sheet of white paper, source of tap water, sunlight (needed for 30 minutes); burner fuel, 2 pairs of gloves, pipet, empty short-stem pipet, goggles, spatula (metal), test tube clamp holder, 4 test tubes, test tube rack, tweezers, 2 well-plates, 1 Experiment Bag: Observations of Chemical and Physical Changes. Exercise 1 Procedure: First, set a sheet of black paper and a sheet of white paper on a table. Set one of the 24-well plates on the table and use scissors to carefully snip off the tips of pipets containing chemicals. Set upright in wells using well plate as a pipet holder. Set the second well-plate on sheet of white paper and arrange so that A1-well is in upper left-hand corner. In well 1, place 4 drops of sodium bicarbonate (NaHCO3) and then add 4 drops of hydrochloric acid (HCl) to sodium bicarbonate. Swirl well-plate as necessary to thoroughly mix two chemicals together. Immediately observe the interaction between chemicals (using white and black sheets of paper as background) and record observations in Data Table 1. From observations, make a conclusion (yes or no) if a chemical change occurred and record in Data Table 1. Repeat...
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...with the eye-tracking research, what other research methods could help Mazda assess the usability of its website? Summarize your advice for how Mazda could use complementary methods to obtain a complete understanding of its website’s usability. Questionnaires are an effective way of quantifying data from a sample group, and testing emotions or preferences. This method is very cheap and easy, where budget is a problem, and gives an element of scale to opinion and emotion. These figures are arbitrary, but at least give a directional method of measuring intensity. Case 11.2- Texas Instruments and E-Lab Case Overview Texas Instruments hired E-Lab to conduct a visible observation to obtain precise information. The information retrieved from the observation will be given to engineers to create an effective and efficient software program for Police Officers. The observation presented numerous things that were unknown to Texas Instruments prior to the research. Situation Analysis Texas Instrument needs to investigate the...
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...understanding1. It is done through observation of natural phenomena, and/or through experimentation that tries to simulate natural processes under controlled conditions. (There are, of course, more definitions of science.) Consider some examples. An ecologist observing the territorial behaviors of bluebirds and a geologist examining the distribution of fossils in an outcrop are both scientists making observations in order to find patterns in natural phenomena. They just do it outdoors and thus entertain the general public with their behavior. An astrophysicist photographing distant galaxies and a climatologist sifting data from weather balloons similarly are also scientists making observations, but in more discrete settings. The examples above are observational science, but there is also experimental science. A chemist observing the rates of one chemical reaction at a variety of temperatures and a nuclear physicist recording the results of bombardment of a particular kind of matter with neutrons are both scientists performing experiments to see what consistent patterns emerge. A biologist observing the reaction of a particular tissue to various stimulants is likewise experimenting to find patterns of behavior. These folks usually do their work in labs and wear impressive white lab coats, which seems to mean they make more money too. The critical commonality is that all these people are making and recording observations of nature, or of simulations of nature...
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...person with a meaning or definition to them. For example, a teacher may use labelling to label students with titles such as bright or thick, trouble maker or hardworking. Participant observation is where a researcher takes part in the event or ordinary life of a group while observing it. There are two types of types of participant observation- covert and overt observation. Covert observation is when the study is carried out undercover, and the researcher’s real identity and purpose are kept a secret. Overt observation is the complete opposite where the researcher makes their true identity and purpose known to those being studied. The provided text looks into researching gender relations in school. Gender relations can cause many issues for the researcher, especially if the researcher is of a different gender. The item suggests that teachers working in the school may disguise their sexist attitudes because they have a professional duty to treat all pupils the same but they may find it hard to put up with this act when being observed over a long period of time. A strength of participant observation is that results are usually valid. Rather than getting a participant to fill out a questionnaire when there is no real way of telling if they are giving accurate answers, participant observation can however provide great amounts of qualitative data and the researcher can put his findings into great detail. By observing ethnic minorities and teacher/student interaction towards them...
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...of different types of observational studies including naturalistic and controlled observations, non-participant and participant observations, structured and unstructured observations. Naturalistic observation is a research method commonly used by psychologists and other social scientists. This technique involves observing subjects in their natural environment. This type of research is often utilized in situations where conducting lab research is unrealistic, cost prohibitive, or would unduly affect the subject's behavior. Naturalistic observation differs from structured observation in that it involves looking at a behavior as it occurs in its natural setting with no attempts at intervention on the part of the researcher. A non-participant observation is a type of observational study whereby the researcher does not join in with the activity being observed. Controlled observation is a type of observational study where the conditions are contrived by the researcher. This type of observation may be carried out in a laboratory type situation and because variables are manipulated is said to be high in control. The Dement and Kleitman study is an example of controlled observation. The weakness of the method is that it will be low in ecological validity compared to naturalistic observation. If participants are aware they are being studied they behave differently. A participant observation is a type of observational study where the observer is also a participant in...
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...Caught your eye yet? : The connection of how spending money comes and its tricky disguises. Ever walked in to a store and saw that huge highlighter colored sign announcing “Big Blowout SALE”? They are pulling you in with things that attract you the most. From posters, human advertising, to the most innocent thing, the Barbie Doll, they are catching your eye and reeling you in and you’re unaware. Many businesses have learned the “Science” of how to arrange items so they may catch your attention. Paco Underhill, a retail anthropologist and an urban geographer, studies shopping behavior and has become valuable guides to store managers who look for the best ways to sell items. I am shocked to know that there are people who watch others for a living. As you approach a store look around and see if there is someone suspicious. Look around to see if you are being watched. Have you ever felt as if you were being watched? That is because they are watching you! Everything you are doing in the store is being observed. Strange is it? Yes but that is someone’s job. What you pick out and how you take in the item is all a part of their plan. Your choices matter in a study that you have no idea about. Your facial expression, happiness, and your disappointment makes a big deal also. The Credit Card Barbie is another marketing disguise. Barbie is, in a way advertising to younger age group. This is catching the eyes of your children and showing the fun and happy side spending...
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...23, 2015, I spent the week among staff to assess these complaints. My assessment was done with a check list and visual observation of the following: I arrived 15 minutes before shift change. I checked the communications and automation maintenance log books. I checked inventory and the storage supply room. I observed the ergonomics of the department. I observed staff etiquette. I survey all recently hired laboratory staff. My findings were that all staff promptly reported 10 minutes before shift change. The communications and automations maintenance log books were legible and satisfactory. Inventory was in its routine order and the supply room was adequate for the needs of the laboratory. In observing the work flow operations of the lab, I’ve estimated it to be an ergonomically correct environment. Phone etiquette and staff interactions made a pleasant atmosphere to work in. However, survey showed that recently hired staff was not trained in how to operate the hospital’s phone system. My assessment of the complaints weren’t that laboratory staff had a lack of technical bench training, but that of new hire training with the phone system. Criticism turned out to be frustration of: dropped, interrupted and improperly transferred calls. I’ve arrange a phone system training to held tomorrow at 7am and 3pm in Conference Room A for all lab personnel who have not been trained or signed off. Please be advised that an email has been generated to those for whom...
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...1.3 Lab: Sharpening Scientific Skills Problem: How can I apply my skill as a scientist to learn more about a substance? Materials: 1 250 ml beaker 1 hot plate 1 pair of beaker tongs 2-3 teaspoons of copper (II) sulfate pentahydrate Observe and Describe the substance (state whether your observations are qualitative/quantitative or direct/Indirect) Blue Powder Crystal Shiny Describe what tests or investigations you could do to learn more about the substance: freeze add water burn Procedure: 1. Place 2-3 teaspoons of copper (II) sulfate pentahydrate in the 250 ml beaker. 2. Place the beaker on the hot plate and turn the hot plate on to the lowest setting. 3. Observe the material as it heated, recording observations in Table 1. 4. When changes cease to occur, turn off the hotplate and remove the beaker from the hot plate using tongs. 5. Once the beaker is cool, rinse the beaker and place in the “to wash” container. Table 1: Heating of copper sulfate pentahydrate qualitative observations Stuff turn white stinks evaporating liquid fizzle Questions Are any of your observations better described as inferences or conclusions? All observations, no inferences or conclusions except for evaporating water. What tests could you now do to learn even more about the material? Write a brief procedure and complete the test(s) if possible. Since the material is CuSO4*5H20. We could add water to the white powder and see if it becomes blue again since...
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