...iLab week 1 Assignment Lab Report: I. Seperation of a Salt Water Solution Lab II. Introduction In this lab scenario, we were asked to determine the percentage of salt present in a saltwater solution. We are able to reach a conclusion in the lab due to certain chemical properties of water and salt. One main property is that water has a significantly lower boiling point in comparison to the salt in the mixture. III. Procedure First we obtained a 250ml beaker as well as an electronic scale in grams (g) and a Bunsen burner. After weighing the empty glass, we applied the saltwater solution and weighed the beaker again. Then we evaporated the water by placing the beaker on the Bunsen burner. Then we were able to determine the amount of salt present by weighing the beaker contents. IV. Observations and Results Contents | Mass | . Beaker (control) | 75.000g | .Beaker + mixture | 85.175g | .Beaker + salt | 75.175g | . Salt | 0.175g | .water | 10.000g | Percentage of Salt in Mixture | %1.75 | V. Discussion This, in my opinion, is a good Lab to start with. The results seem logical and the lab does a good job of demonstrating the proper application of the scientific method as well as the properties of saltwater mixtures. It also showed good basic practices to use during experimentation like the use of a control group , and measuring and recording data throughout the process VI. Conclusion The experiment...
Words: 256 - Pages: 2
...How Does Salt Affect A Plants Growth? Sharmaine Horton 11/18/11 7th Period Science Fair Project Table of Contents Introduction………………………………3 Materials………………………………….5 Procedures……………………………….6 Data……………………………………….7 Analysis and Conclusion………………..8 Bibliography………………………………9 Acknowledgements……………………..10 Introduction Plants are all around, but do we ever think of things that interfere with their growing? Salt along with other things that occur outside on a regular day might affect the plants growing. My question is does salt affect a plants growth. Well in order to find this out I have to state all the facts and remember what is significant. The basic requirements for any gardening plant to survive are water, nutrients, the right temperature and light, but all in differing amounts depending on the type of plant. Plants also need air and a growing medium, somewhere to put their roots down. Water is essential for a garden plants survival, not only to stop them from dehydrating, but also to get them to absorb nutrients. Water also cools the leaves as it evaporates. Rain and snow will travel down through the soil, some will run off into streams or ditches, some will sink down to the water table, some will be lost to evaporation and some will be left in the soil. Plants will use the water left in the soil, which can be up to two thirds of any rainfall. So, it is important to provide correct watering for any plant to survive, and grow. It is...
Words: 618 - Pages: 3
...Basic Biology Class Assignment #5 1. A. Define hypotonic, hypertonic, and isotonic. Hypotonic is any solution that has less solute compared to another solution Hypertonic is any solution that has a higher solute compared to another solution Isotonic is any solution that has the same solute as another solution B. Using a Loin Fish (salt water) and a Koi (fresh water) as your model organisms, what happens under hypotonic, hypertonic and isotonic conditions to these fish. To the Lion Fish in salt water, it’s a hypotonic conditions and nothing happens to the fish. When put in fresh water being hypertonic conditions the fishes cells fill up with water until they burst and kill the fish. Nothing happens to the Koi Fish when it’s in fresh water being hypertonic conditions. But when put in the hypotonic conditions of salt water the will draws the moisture from the fish’s body and the salt content in its body will get higher until it dies. 2. Explain a process of metabolism in the form a fairy tale or comic-book type story using information provided in your lecture slides. You can choose prokaryotic fermentation, eukaryotic fermentation, or respiration (Krebs & Electron Transport). Do not go overboard with literary tools and adjectives. You cannot use glycolysis. Sam’s Example: Once upon a in the cell cytoplasm, there was a six carbon sugar called glucose and with the input of two ATP molecules the quest of glycolysis was initiated. The two ATP molecules...
Words: 412 - Pages: 2
...Introduction: The Yarra River Catchment covers an over 4000 Kilometres. The water of the Yarra River was clear during the European settlement, but there has been intensive land clearing and ongoing development since the mid 1800’s. As a result of the industrialisation clay particles have appeared. The ecosystem is home to over 240 faunas, including the endangered growling grass frog. Given that over time industrialisation has resulted and therefore the salt from the building products that have been used to construct the buildings may have resulted in affecting the salinity levels. Although with saying this the more rainfall will decrease the salinity levels. Though over the past years there has been little rainfall therefore this means that...
Words: 1201 - Pages: 5
...Assignment: analyze some aspect of society in which the Notes on abu battula * King of the unbelievers dies, they dig for him an underground chamber * Put intimates, servants and 30 sons and daughters of the chief men * Place vessel of wine * A man close to the sultan had a son and the people wanted to place him in it with his father * He replied that how could i do this if he is not from my religion and he ransomed his son from them with alot of money * At Sijilmasa, a place with the finest dates * It resembles the city of Basra but the sijilmasa is better * He was treated with the greatest hospitality from a man named abu muhammed al-bishri. Whose brother he has met in china * Abu battula bought camels and fed them for four months * In muharram, he travelles with a caravan with merchants from Sijiilmasa and others * 25 days after he arrives at Taghaza . its a good country * Houses, mosques are of rock salt and its roofs of camel skins * No trees , but has sand with a salt mine * Dig the earth for the salt “which is found greatly in slabs as if they have been shaped and placed underground.” The camels carried two slabs of it * Nobody lives there except for the masufa who digs for it * They live on dates in which they get it form Dar’a and Sijiilmasa. On camel meat and on anulu which is gotten from sudan FOOD * The Sudanese come for to Taghaza for the salt and one load of the salt is sold ar iwalatan...
Words: 703 - Pages: 3
...Ranking Salt Solutions by pH 6-2: Ranking Salt Solutions by pH In this assignment you will be asked to rank aqueous solutions of acids, bases, and salts in order of increasing pH. This is most easily done by first identifying the strong acids that have the lowest pH, the strong bases that have the highest pH, and the neutral solutions that have a pH near 7. The weak acids will have a pH between 1 and 6 and the weak bases between 8 and 14. The exact order of weak acids and weak bases is determined by comparing the ionization constants (Ka for the weak acids and Kb for the weak bases). After ranking the pH of these solutions, you will then test your predictions in the laboratory. 1. Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN, NaOH, NH3, NaCN, KNO3, H2SO4, NH4Cl, H2SO3, NaHCO3, Na3PO4 and CH3COOH. In order of increasing pH: 1.HCl most powerful acid. 2.H2SO4 a strong acid 3.H2SO3 weak but stronger than 4.HCN from experiments 5.CH3COOH weak acid 6.NH4Cl is an acidic salt 7.KNO3 is Neutral salt 8.NaCH3COO NaCN NaHCO3 Na3PO4 are basic salts. 9.NH3 weak Base 10.NaOH strong Base After doing the experiment this is the order that I got: NH4Cl H2SO4 HCl H2SO3 KNO3 NaHCO3 CH3COOH NH3 HCN NaCH3COO NaCN Na3PO4 NaOH Once you have predicted the nature of each salt solution, you will use Virtual ChemLab to confirm your prediction...
Words: 1119 - Pages: 5
...Assignment Electrodialysis Submitted To Md, Rumman-uz-Zaman (Lecturer) Department of NFE Daffodil International University Submitted By Amanat Ullah ID-153-34-467 Department of NFE (Evening) Submitted Date 11.04.2016 Electrodialysis (ED) Definition - What does Electrodialysis (ED) mean? Electrodialysis (ED) is a membrane technique, during which ions are transported through a semipermeable membrane, under the influence of an electric potential. It is a very versatile technology for the separation of difficult mixtures. ED is very useful for water treatment, aiding in the removal of mineral salts, sulfate, nitrate, etc. from brackish water and seawater. ED is also useful for wastewater reduction or recovery. Some other applications of electrodialysis include: * Water reuse * Pre-demineralization * Food processing * Glycerin purification Corrosionpedia explains Electrodialysis (ED) Electrodialysis is a type of dialysis in which undesired ions are removed from solution by means of a direct current passing between two electrodes, one on each side of the membrane. It is used to desalinate or concentrate a liquid process stream containing salts. ED is a highly efficient method for separating and concentrating salts. It is also very useful in reducing salt content of process streams with high amounts of salts. Electrodialysis uses electrical potential to drive the positive and negative ions of dissolved salts through separate semipermeable...
Words: 1075 - Pages: 5
...4-5: Freezing Point Depression If you dissolve a substance such as ordinary table salt (NaCl) in water, the freezing point of the water will decrease relative to the freezing point of the pure water. This property is used to melt the snow or ice on roads during the winter or to make homemade ice cream. In this assignment, you will dissolve a sample of NaCl in water, add some ice, and then measure the freezing point depression. 1. Start Virtual ChemLab, select Colligative Properties, and select Freezing Point Depression from the list of assignments. The lab will open in the Calorimetry laboratory with a beaker containing 45.00 g of ice and a coffee cup calorimeter on the lab bench. A sample of sodium chloride (NaCl) will also be on the balance. 2. Click on the Lab Book to open it. Record the mass of the sodium chloride in the data table. If it is too small to read, click on the Balance area to zoom in, record the mass, and then return to the laboratory. 3. 100 mL of water is already in the calorimeter. Use the density of water at 25o C (0.998 g/mL) to determine the mass from the volume and record it in the data table. Make certain the stirrer is On (you should be able to see the shaft rotating). In the thermometer window, click Save to begin recording data in the lab book. Allow 20-30 seconds to obtain a baseline temperature of the water. Click the clock on the wall labeled Accelerate to accelerate the laboratory time if necessary...
Words: 640 - Pages: 3
...dissolve a substance such as ordinary table salt (NaCl) in water, the boiling point of the water will increase relative to the boiling point of the pure water. In this assignment, you will dissolve a sample of NaCl in water and then measure the boiling point elevation for the solution. 1. Start Virtual ChemLab and select Boiling Point Elevation from the list of assignments. The lab will open in the Calorimetry laboratory with a calorimeter on the lab bench and a sample of sodium chloride (NaCl) on the balance. 2. Record the mass of the sodium chloride in the data table. If it is too small to read, click on the Balance area to zoom in, record the reading, and then return to the laboratory. 3. 100 mL of water is already in the calorimeter. Use the density of water at 25°C (0.998 g/mL) to determine the mass from the volume and record it in the data table. Make certain the stirrer is On (you should be able to see the shaft rotating). Click on the green heater light on the control panel to turn on the heater and begin heating the water. Click the clock on the wall labeled Accelerate to accelerate the laboratory time if necessary. 4. Observe the temperature until the first appearance of steam comes from the calorimeter. Immediately click the red light on the heater to turn it off and then record the temperature as the boiling point of pure water in the data table. Letting the water boil will decrease the mass of the water present in the calorimeter. Note that the...
Words: 692 - Pages: 3
...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, what is our topic yesterday? 3.2.2 Motivation - Show a 30 seconds video clip. Teacher: What do you notice about these pictures? Base on the presented illustrations, can you guess what will be our topic for today? 3.3 Lesson Proper Teacher’s Activity | Students’ Activity | 3.3.1 Introduction * In chemistry, solution is homogenous mixture of two or more substances. The...
Words: 1391 - Pages: 6
...BTEC Nationals Edexcel level 3 BTEC National Certificate/Diploma Applied Science (Laboratory and Industrial Science) Applied Science (Medical Science) Integrated Vocational Assignment CASE STUDY 2- Johnson Matthey (Catalysts and Chemicals) Unit 3: Workplace practices This case study has been prepared by Mr. M. Hooper & Ms P. Hooper with the co-operation of Johnson Matthey (Catalysts and Chemicals) for the use of learners completing the IVA for the NQF Level 3 BTEC Nationals in Applied Science. Prepared by M. Hooper & P. Hooper. March 2005 The following materials have been authorised for use by students in this context, by Johnson Matthey. Some data is not current, and some is adapted to give a working document to allow completion of the assignment, To complete the assignment students must have access to detailed information about a company. This is often difficult to obtain, and the following information will provide exemplar material for the completion of the IVA. The information is based on the British Company – Johnson Matthey, one of the leading speciality chemicals companies in the world specialising in Catalysts, Precious Metals and Speciality chemicals. Johnson Matthey is a large multi-national company. There is a lot of information available on the various web-sites. The website reflect the...
Words: 6074 - Pages: 25
...Does rock salt I use on my driveway negatively affect lawns Name: Date: Assignment: Unit 1 Individual project Does the rock salt used as ice melt on my driveway effect my lawns growth? Introduction: Being from Ma cold climate, We tend to have rather harsh winters, Ice melt in some sodium form or other is regularly used to de-ice walkways and driveways. When comparing different products available, most ingredients include Sodium Chloride or Calcium Chloride. Salt, lowers the freezing temperature of water, thereby making it more difficult to refreeze. Often times, you find dead grass along the walkways and sidewalks after winter, some people attribute this to the ice melt used. Do rock salt and other deicers negatively affect lawns? That is what we will answer in this paper. Hypothesis: Grass is negatively affected by use of ice melting products, due to the sodium. Prediction: If rock salt and other ice melt products are over used, it will negatively affect the lawn by burning the grass, and causing some of it to die. Controlled Experimental Method: Because it is winter here in Montana, and doing this experiment outside on my lawn would present far too many variables, I researched ways of conducting this experiment with minimal amount of variables. Dr. Muriel Gerhard did a similar experiment for kids and posted her methods on the website education.com. I based my methods for this experiment on her experiment. I purchased...
Words: 774 - Pages: 4
...find out which substance on the suspects matched the one surrounding Professor Chemback. The suspects include Butch, Susie, Joe, Jack, and Sylvia. Butch had flour on him, Susie had sugar, Joe had salt, Jack had acid, and Sylvia had baking soda. Materials and Methods Materials needed: 1. 5 beakers containing the known substances 2. 1 beaker containing the unknown substance 3. 2 beakers for testing 4. 2 stirring rods 5. 2 well plates 6. 1 conductivity tester 7. 6 strips of red Ph paper (basic) 8. 6 strips of blue Ph paper (acidic) 9. water 10. vinegar 11. 6 pipettes Procedure: 1. Combine each substance with water and stir 2. Determine if the substance in soluble 3. Record results on data table 4. Empty and wash the beakers 5. Combine each substance with vinegar 6. Record each reaction on data table 7. Empty and wash the beakers 8. Combine each substances with water again and stir 9. Place the conductivity tester in each beaker one by one, washing it after each use 10. Determine if the substances conducted electricity and record information on the data table 11. Put a little of each substance in separate places in the well plate 12. Using a pipette, add a few drops of water to each of the substances 13. Place a strip of blue Ph paper in each one 14. Record the color change of the paper (if any) on the table 15. Repeat step 11 using a different well plate ...
Words: 581 - Pages: 3
...Assessment Type: | Report | Assignment Title | A region in the developing world is facing a water-supply problem. The government is looking for an affordable solution to this problem and has asked you to investigate different methods of water provision. | Tutor Name: | | Student ID Number: | T0048411 | Date of Submission: | | Word count: | 1075 | Introduction Water is very important for every human being; it is not only used for drinking, as well as to satisfied people’s essential needs. Earth is huge, but there is a limited amount of water that humanity can use. Of all the water on Earth, only 4% is fresh, and only 0.0067% can be used by people (Gleick, 1993). Fresh water are distributed very unevenly around the globe, which is why some countries or entire regions will be left without water. One of these countries is Taiwan. It is very important to find a way to resolve the situation in the field of water supply. Next described will link Taiwan is faced with the problem of water shortages, and will also describe some of the ways to combat this problem. Fresh water is distributed very unequally around the globe, so some countries or entire regions are without fresh water. One of those countries is Taiwan. It is very important to find a way to solve the situation in the field of water supply. Follows will describe a developing country , Taiwan, which faces the shortage of water with its some plans to deal with it. Problems for water supply have to take it seriously...
Words: 1319 - Pages: 6
...Ripe Cherry Tomatoes, Halved Salt & Pepper 4 Tablespoons Slivered Fresh basil Leaves 1 Teaspoon Balsamic Vinegar 1 Pound Pasta of Choice (See Notes Above) 1 (Around 10 Ounce) Ball Burrata Cheese, Cut Into 6 Wedges Garnish: Fresh Basil Leaves Extra Virgin Olive Oil Directions: In a small pot, heat the 1/4 cup of olive oil until lightly smoking over medium heat, then drop in the garlic and pepper flakes if using. Cook until fragrant, about 30 seconds. Add the tomatoes, season with salt and pepper. Remove from the heat, stir in the chopped basil and the balsamic vinegar, then set aside. Cook the pasta in a large pot of lightly salted boiling water until it is “al dente”. Drain the pasta then return it to the pot. Pour the tomato mixture over the pasta and toss to mix well. Serve the pasta in individual bowls topped with a wedge of the burrata, a sprinkling of baby basil leaves, and a drizzle of extra virgin olive oil. Caramelized Onion, Pear & Blue Cheese Bites Yield: Serves 8 - 10 Prep Time: 15 mins Cook Time: 30 mins Ingredients: 1 (1 Pound) Package Puff Pastry, Thawed 1 Medium Onion, Peeled & Chopped Salt & Pepper To Taste 2 Medium Ripe Pears, Peeled, Cored & Cut Into Small Dice 3 Tablespoons Olive Oil, Divided 3 Tablespoons Butter, Divided 3 Tablespoons Finely Chopped Parsley 1/4 Cup Chopped, Lightly Toasted Walnuts 1/3 Cup Blue Cheese crumbles Egg Wash: 1 Medium Egg Beaten With A Tablespoon of Water Directions: Preheat oven to...
Words: 2260 - Pages: 10
