They are extremely important in chemistry because they allow intimate and varied encounters between. Separation techniques urdu university chemistry club. Extracting metals worksheet this worksheet accompanies extracting metals summary. Check your knowledge of metal extraction and the environment by using the quiz and worksheet. The complete procedure for the extraction is described using a visual format and there is also a worksheet for students that finish. Wells center for the management, utilization and protection of water resources and department of chemistry, tennessee technological university, cookeville, tennessee 2. You are then free to drink and enjoy the water and the extracted substances it contains. Extraction extraction to separate a desired substance from a reaction mixture or natural source liquidliquid extraction depends on the solubility of a substance in two immiscible liquids so that most of the substance can be transferred from one liquid to the other.
Easy example of extraction teamaking is a very basic nonlaboratory extraction. Complete this worksheet as you walk through the steps of. This type of manual optimization was now performed for the different stages in the. Gcse sciencechemistry worksheet on the extraction of metals do online or printout, do, return to check answers. For acidic compounds, aqueous sodium hydroxide is added. An insect pheromone a chemical is being extracted from beetles by shaking a flask containing 1. Pdf solvent extraction is a common technique utilized for both industrial applications and. In a particular experiment in simple extraction or in chemically active extraction, you will be able to figure out which layer, aqueous or organic, will contain the compound you want to isolate. Dec 23, 2017 this is a worksheet that gives the method for the extraction of dna from fruit.
Define a native metal and give examples of methods used to separate them. Answer questions about the solubility of a material in different. Metals, reactivity and extraction worksheet teaching. The picture shows extraction of iron ore in a mine. Liquidliquid means that two liquids are used in the extraction procedure. Identify each of the following substances as pure substances, heterogeneous mixtures, or homogeneous mixtures. Notes and hints keep the isopropyl alcohol very colduse the freezer or ice bucket.
Place the metals lead, calcium, copper, zinc and aluminium into the reactivity series below. Save as pdf chromatography iv ionexchange chromatography worksheet worksheets. These compounds vary greatly in molecular size and chemical composition. The desire is to have three solutions at the end, each in methylene chloride. Extraction of metals occurrence ores of some metals are very common iron, aluminium others occur only in limited quantities in selected areas ores need to be purified before being reduced to the metal this adds to the expense high grade ores are therefore cheaper to process. Here the impure compound is dissolved in an organic solvent.
Solvent extraction although solvent extraction as a method of separation has long been known to the chemists, only in recent years it has achieved recognition among analysts as a powerful separation technique. The compounds can be grouped into broad categories of organic acids, organic bases and neutral organics. Devise a way to separate the materials in the following sample by performing an extraction. Dna extraction virtual lab by julia muglia teachers pay teachers collecting check cells b. Practica in process engineering ii extraction introduction extraction is a process in which one or more components are separated selectively from a liquid or solid mixture, the feed phase 1, by means of a liquid immiscible solvent phase 2. E du click on virtual labs at the bottom half of the screen. Chem 230 exam 1 key short answermultiple choice section. We also acknowledge previous national science foundation support under grant numbers 1246120, 1525057, and 14739.
Gcse notes on metal extraction aqa ccea edexcel ocr 21stc ocr gateway wjec email comment. Extraction california state university, dominguez hills. Mar 14, 2018 devise a way to separate the materials in the following sample by performing an extraction. Amount of acetylsalicylic acid in powder see box 2. Because of this, they are a perfect fruit to use for a simple strawberry dna lab. Prepare a prelab as you have for the last two experiments and do this exercise. But in order to isolate the chemical compounds, one of the techniques thats frequently used is known as extraction. Chemistry science unit2 42 content4 extraction of metals content5 corrosion of iron causes and prevention students build links between the reactivity of metals and the ease of their extraction. Techniques and transformations 1 laboratory 6 natural product chemistry. Gcse science chemistry worksheet on the extraction of metals do online or printout, do, return to check answers.
Pdf workbook covering year 10 chemistry for the australian curriculum. We also acknowledge previous national science foundation support under grant numbers 1246120, 1525057. They should be able to out line the method used for extraction of a metal according to its position in the reactivity series. Dna is extracted from human cells for a variety of reasons. Reduction means gain of electrons and loss of oxygen see diagram. Sons, ltd first published the analytical chemistry by open learning acol. Extraction can be done in your organic chemistry lab using these two main pieces of glassware. Give to students as close to the start of the activity as possible. Gcse sciencechemistry worksheet on the extraction of. Distillation worksheet teacher answers what is distillation. The answers to the questions are available on separate worksheets so you can fill them out and then check your work. The distribution of a solute between two phases is an equilibrium condition described by partition theory. Clove extraction worksheet extraction of eugenol from.
Before you use these worksheets, you may find it valuable to read the education in chemistry article, how to teach the extraction of metals. This is a worksheet that gives the method for the extraction of dna from fruit. Comprehensive worksheet containing a variety of questions, including extension and further research. Amount of acetylsalicylic acid in powder see box or bulk container 2.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. However, occasionally large amounts of emulsion are formed, and it is. Melting point of acetylsalicylic acid observed lit. A spreadsheet algorithm for stagewise solvent extraction1. Electrolytes electrolytes are ionic compounds that conduct electricity. A cheatsheet which gives students key information and definitions on the topic. By the end of this worksheet students will be able to. Place the sep funnel in a ring clamp, allow the layers to separate completely, then drain the lower layer into a 50 ml erlenmeyer flask labeled flask a. You can find a booklet of past paper questions and the examination boards answers by clicking a link below.
The first which is shown in blue is known as the separatory funnel, or the sep funnel for short. Practice chemistry with worked chemistry problems printable periodic tables pdf. Describe how the form in which a metal exists in nature is related to its reactivity. Heterogeneous alphabet soup pure substance salt heterogeneous concrete homogeneous vegetable oil homogeneous air. Chemical technology division, argonne national laboratory, argonne. When a manufacturer lists a chemical as acs reagent grade, they must demonstrate that. The acid compound reacts with the base to form a salt which. Fantastic collection of worksheets and resources available to download today.
Metals, reactivity and extraction worksheet teaching resources. Separations and purifications questions practice khan academy. This set of questions will help you find out if you fully understand the partition law in chemistry. The transfer of the components from the feed to the solvent is controlled by the solubility behavior. Extraction in chemistry is a separation process consisting in the separation of a substance from a matrix. Therefore, the oxidation number of each oxygen atom is. Its full of approaches to solidify students knowledge of extraction, building a bedrock for further learning, including describing reactions in terms of. This is a collection of chemistry worksheets in pdf format. Strawberries are loaded with dna as each cell has eight copies of their chromosomes. Solvent extraction solvent extraction is often used for acidic or basic compounds.
Solvent extraction, also known as liquidliquid extraction, is a method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent. The libretexts libraries are powered by mindtouch and are supported by the department of education open textbook pilot project, the uc davis office of the provost, the uc davis library, the california state university affordable learning solutions program, and merlot. Dna extraction c 21 chemistry in the k8 classroom grades 48 2007, omsi orpapaya or pineapple juice. Using reasons from chemistry, describe the effect on the environment of one of the following. Metals are usually found in nature in compounds called oxides. Distillation is a physical process used to separate a solvent from a solute based upon differences in. At the bottom, you have the stopcock, currently shown in the closed position. Introduction extraction is the drawing or pulling out of something from something else. You boil tea leaves in water to extract the tannins, theobromine, polyphenols, and caffeine out of the solid tea leaves and into the liquid water. The reactivity of a metal determines which method should be used to extract it from an ore. Applying rule one, the oxidation numbers of each atom must add up to the charge of 0 because the net charge on the molecule is zero. At the top of this, this has an opening through which you can pour in liquid.
Extraction or separation of dissolved chemical component x from liquid. Solvent extraction is one of the most extensively studied and most widely used techniques for the separation and preconcentration of elements 6769. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. A worksheet where students complete key questions and definitions on the topic.
Apr 03, 2018 this website and its content is subject to our terms and conditions. Toward the end of the extraction, you may shake more vigorously to be sure the extraction is complete. The sample consists of water with a complex mixture of trace levels of organic compounds. Common examples include liquidliquid extraction, and solid phase extraction. View homework help clove extraction worksheet from co 2 at university of minnesota. Chemistry extracting metals autumn 2006 3 of 27 boardworks ltd 2006 metal extraction is a large and important industry. Isolation of caffeine from tea introduction natural products are organic compounds produced by living plant and animal biochemistry. The desire is to have three solutions at the end, each in methylene. Technetium chemistry in a novel group actinide extraction process. The technique has become more useful in recent years due to the development of selective chelating agents 7073 for trace metal determination. Please read the theory section in the handbook for organic chemistry lab. May 30, 2019 this is a collection of chemistry worksheets in pdf format. You will also need to know which layer will be on top in the separatory funnel.
Use 1 cup of fresh, frozen diluted as directed, or canned juice. Liquidliquid extraction is based on the transfer of a solute substance from one liquid phase into another liquid phase according to the solubility. As shown by the grid, we divide the polymer sheet into 10 000 1 cm. Metal extraction is a large and important industry. Microscale experiments in organic chemistry worksheet lab 31 extraction worksheet 1. Introduction extraction is the drawing or pulling out of. Take a quick interactive quiz on the concepts in solvent extraction. Describe how the method of extraction of a metal is related to its reactivity. This website and its content is subject to our terms and conditions. Microscale experiments in organic chemistry worksheet lab 31 extraction worksheet name. Development of a solvent extraction process for group. An ore is a mineral, which is a metal compound that contains enough quantity of the metal to be extracted. Separation of an acidic, a basic and a neutral substance read pp 142155, 161162, chapter 10 and pp 163173, chapter 11, in ltoc.
Kazuya uezu and kazuharu yoshizuka department of chemical processes and envi ronments, the university of kitakyushu. Extraction of iron in a blast furnace iron is also below carbon in the reactivity series, so therefore carbon can be used to reduce it note. University of groningen enantioselective liquidliquid extraction in. Liquidliquid extraction, mostly used in analysis, is a technique in. Every pot of coffee or cup of tea involves solidliquid extraction, the extraction of.
Strawberry dna extraction teacherleader target audience. Comprehensive worksheet containing a variety of questions, including. Liquidliquid extractions using a separatory funnel are essentially the only kind of extraction performed in the organic teaching labs. A flow sheet of this type of setup is given in figure 1. Gcse chemistry electrcity in chemistry high demand questions questionsheet 3 if two different metals are placed in salt solution, electricity can be made as shown. Ion exchange, solvent extraction, and solidphase extraction separation techniques. Oxidation and reduction redox processes play an important role in radioanalytical chemistry, particularly from the standpoint of the dissolution, separation, and detection of analytes, tracers, and carriers. Gcse sciencechemistry worksheet on the extraction of metals. We will be demonstrating this chemical separation method in lab on a macroscale. Singleuse items, such as water bottles, bags, straws, or paper d.
These practice questions will help you master the material and. Chemistry insights, pg 354, questions, question 12 worksheet 4 12. Also available is a pdf of a pie chart of the elemental composition of the human body. Make sure juice contains raw, uncooked fruit juice. The procedure for extracting dna from a strawberry is simple and the results are usually obvious it is easy to see the white strands of dna within the pink solution of strawberry juice.
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