Liquid Essays & Research Papers

Best Liquid Essays

  • Liquids And Solids - 358 Words
    Ocean County College Department of Chemistry Liquids and Solids Date Submitted: June 21, 2015 Date Performed: June 19, 2015 Lab Section: Chem-181DL1 Course Instructor: Prof. Amal Bassa Purpose The purpose of this experiment was to determine the boiling point of isopropyl alcohol and determine the melting point of acetamide. Procedure To begin I tied the test tube and thermometer together and inserted an inverted closed-end capillary tube into the test tube. I...
    358 Words | 2 Pages
  • liquids and solids - 510 Words
     Purpose The purpose of this lab is to find the boiling point of the liquid and find the melting point of the solid. Procedure Boiling point: To find the boiling point of Isopropyl Alcohol I put about 1 mL of it in the test tube. Then I attached the thermometer to the test tube with a rubber band(make sure the thermometer bulb is lined up with the end of the test tube). After that I made a water bath with a beaker and put in the test tube with the thermometer. I then used a burner and a...
    510 Words | 2 Pages
  • Liquids and Solids - 384 Words
    Date of Experiment October 7, 2012 Report Submitted: October 7, 2012 Title: Liquids and Solids Purpose: The purpose of this experiment is to determine the boiling point of liquids and the melting point of solids. Procedure: I got all of my materials together and set up. I poured rubbing alcohol in a beaker and rubber banded it with the thermometer. I logged the last bubble that came out of the capillary tubes. After that I crushed the acetamide and carefully put it in the capillary tube...
    384 Words | 2 Pages
  • Liquids and Solids - 1437 Words
    Liquids & Solids Pre Lab Questions: 3pts 1. What are the learning goals of this lab? The learning goal of this experiment is to view and experience the melting point and boiling point of different substances. 2. Why is acetamide not allowed in contact with your skin? What precautions does one have to take to work with this chemical? Acetamide is a carcinogen, which can cause cancer. Therefore, it should not be allowed to come in contact with a person’s skin. Any person working with this...
    1,437 Words | 5 Pages
  • All Liquid Essays

  • Liquid to Solid - 413 Words
    Liquid to solid: Freezing Freezing or solidification is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point. When I hear the word “Freezing”,ice will be the first one that will pop out of my head,why? Because for me ice is the simplest of of how to express freezing and it is a great example to easily understand freezing.Many people get curious of why do ice,that is liquid that turned into solid melts in water?Its because Ice...
    413 Words | 2 Pages
  • Chemistry Lab Liquid-Liquid Extraction
    Laboratory #16: Analysis of Grease in Water by Solvent Extraction Experiment Date: 2/19/10 Due Date: 2/26/10 II. Objective The goal of this lab was to determine the amount of impurity, in the form of oil, in water using the method of solvent extraction, also known as liquid-liquid extraction, a method of separating two materials with different physical and/or chemical properties. Two methods of evaporation will be used to finally determine the concentration of impurity- one using an...
    1,458 Words | 5 Pages
  • The Viscosity of Liquids - 2087 Words
    39. The Viscosity of Liquids After studying the present lecture, you will be able to Define viscosity and viscosity coefficient Outline the method to measure viscosity using Ostwald viscometer Determine the average molecular weight of a polymer Determine the surface concentration of 1-butanol in aqueous solution Measure the distribution coefficient of a solute betweenn two solvents 39.1 Introduction Viscosity, one of the transport properties, arises because of...
    2,087 Words | 9 Pages
  • Liquid and Solid - 359 Words
    Name:Shin Park|Date:06/14/2013| Exp 5: Liquids and Solids|Lab Section: | Data Table: Boiling Point Trial 1 Trial 2 Trial 3 Temperature when the last bubble has emerged ___83_˚C __82__˚C __82__˚C Average temperature from all three trials ___82.33_˚C % error ___.0849_% Melting Point Trial 1 Trial 2 Trial 3 Temperature when the acetamide melts __82__˚C _81___˚C __82__˚C Average temperature from all three trials ___81.66_˚C % error...
    359 Words | 2 Pages
  • Viscosities of Liquids - 658 Words
    Objective: The objective of this lab was to find and examine the viscosities of ideal and non-ideal solutions. The ideal being the toluene/p-xylene and the non-ideal being the methanol/water. The second objective of this lab was to investigate the temperature dependence of viscosity (Halpern, 17-1). Introduction: Viscosity is the resistance to flow of a certain fluid. In this experiment two solutions are used. According to the definition of viscosity mobile liquids have a...
    658 Words | 3 Pages
  • Liquid and Evaporation - 937 Words
    Rate of Evaporation of Different Liquids Objective of the Project This project is of the rate of evaporation of different liquid, in which we also discuss the factors which affect the rate of liquid. Introduction When liquid is placed in an open vessel. It slowly escapes into gaseous phase ventually leaving the vessel empty. This phenomenon is known as vaporization or evaporation. Evaporation of liquids can be explained in the terms of kinetic molecular model although there...
    937 Words | 9 Pages
  • Experiment: Vapor Pressure of a Liquid
    The vapor pressure of a liquid is the equilibrium pressure of gas molecules from that liquid (i.e., the results of evaporation) above the liquid itself. A glass of water placed in an open room will evaporate completely (and thus never reach equilibrium); however, if a cover is placed on the glass, the space above the liquid will eventually contain a constant amount of water vapor. How much water vapor is present depends on the temperature, but not on the amount of liquid that is present at...
    282 Words | 1 Page
  • Viscosity of Liquids Lap Report
    Experiment 1: Viscosity of Liquids Victoria Kulczak Lab Partners: Laina Maines & Heidi Osterman Date of Lab: 2/21/11 Due Date: 2/28/11 Abstract: The goal of this experiment was to determine the viscosity of given liquids. Two different methods were employed, the first measures time of flow of several methanol-water solutions, from point A to point B. The second method involves dropping a foreign object, in this case a sphere, into a cylinder of glycerol and measuring the time it takes...
    1,827 Words | 7 Pages
  • Rate of Diffusion Within a Liquid
    Rate of diffusion within a Liquid Introduction: In this experiment, I and my teammates choose to investigate with the temperature because in the lesson that we investigate “which will be the best method”, we find out that temperature will be a good way to choose. Aim: To know how the temperature will affect the rate of diffusion within a liquid. Hypothesis: The result of the experiment will be the highest temperature will be the fastest and the lowest temperature will be the...
    360 Words | 2 Pages
  • Determination of the identity of an unknown liquid
    Chemistry Lab Report Purpose The purpose of this lab is to determine the identity of an unknown liquid by measuring its density and its boiling point and try to match it with those solutions given in Table 2 of experiment 2. Procedure Part A In Part A, The main purpose was to find the determination of the density of the unknown (j41) and by doing that we had to determine volumes of the unknown liquid (j41) using three different volumetric devices which are graduated cylinder,...
    1,647 Words | 11 Pages
  • Atmosphere and Volatile Liquids - 577 Words
    SECTION - A 1. Name the technique to separate [1] (a) Salt from Sea – water (b) Butter from curd 2. Define velocity. [1] 3. What do you mean by free fall? [1] 4. Mention any 2 advantages of using Italian bee variety in honey production. OR (a) Identify soluble and solvent in the following solutions: [3] (i) Aerated drinks (ii) Tincture of iodine (iii) Lemon water (b) State the principle of each if the following methods of separation of...
    577 Words | 3 Pages
  • Experiment 5 Solids and Liquids
    Experiment 5 Liquids and Solids Chemistry 1211 Fall 2012 Section 1: Abstract, Experiment and Observation Abstract: The purpose of this experiment is to determine the boiling point of a liquid and the melting point of a solid. We also were able to observe the difference between boiling and melting point Experiment and Observation: We used isopropyl alcohol and set up an experiment to observe the boiling point. We set up a second experiment using acetamide to...
    800 Words | 3 Pages
  • Density of Liquids and Solids Lab
    Name Date Lab: Denisty – Solids and Liquids Part 1: Density Background Information: The density of an object is how much “stuff”, or molecules, a substance is made of. Density is how tightly packed the molecules are. To calculate the density of a substance we need to know the mass (weight) of the substance and the volume (how much space) of the substance. Mass is determined by weighing an object. Volume of regular shaped objects is calculated by...
    323 Words | 2 Pages
  • Solids Liquids and Gases Physics Gcse
    Look at these pictures. Label them as solid, liquid or gas. Use them to help you cross out the wrong information in the table below so you are left with only the correct information. solid liquid gas Extension: Using your table above, explain the following a) Why does a solid have a fixed shape? A solid has a fixed shape because the particles are very close together and arranged in strong regular lines although they vibrate the particles are so packed...
    298 Words | 2 Pages
  • Capillarity: Surface Tension and Liquid Surface
    Determination of Cleansing Action of Detergents (Using Capillary rise) Synopsis This project report explains about the surface tension and capillarity of liquid through a simple experiment of finding the capillarity of various detergents. Oil stains and grease on dirty clothes cannot be removed, using water alone, because water does not wet them. If detergents added , surface tension is decreased, the area of contact is...
    4,798 Words | 23 Pages
  • Viscosities: Surface Tension and Liquid Viscosity
    My report is dealing with liquid viscosity and how they are used to help us measure liquids and gives us the accurate temperature that we have today. I first want to talk about viscosity and the role it plays in all of our lives. Viscosity is a liquid that does not have the ability to know the flow and what it is measuring like NS m-2. Then there is viscometers and there roll is to measure liquid viscosity which we still use today for plenty of things such as, chemical engineering, chemical...
    348 Words | 2 Pages
  • Density of Liquids Lab Report Paper
    FE 106 GENERAL CHEMISTRY EXPERIMENT-1 DENSITY OF LIQUIDS PREPARED BY BURAK COBAN PURPOSE: In this experiment we will learn how can we find the density of liquids and liquids of density how change effect of temperature, pressure, mass, volume and concentration. For this reason we will take NaCI solutions with different concentrations and we will measure their densities, so we will find out the effects of concentration on density of solutions. THEORY:...
    1,257 Words | 7 Pages
  • Why Do Some Liquids Flow More Freely
    Why do some liquids flow more freely than others? Liquids vary in their viscosity (resistance to flow). A definition of viscosity; “Viscosity is a measure of a fluid's resistance to flow. It describes the internal friction of a moving fluid. A fluid with large viscosity resists motion because its molecular makeup gives it a lot of internal friction. A fluid with low viscosity flows easily because its molecular makeup results in very little friction when it is in motion. Gases also have...
    704 Words | 3 Pages
  • 4 Identifying Which Liquid Evaporates Faster
    June 28, 2013 FORMAL REPORT Group 4 Signature Leader: Issabette Pajarillaga __________________ Members: Jolly Cire Angeles __________________ Lyndon David Bumacas __________________ Christalyn De Guzman __________________ Danielle Clarisse Mariano __________________ April Bernadette Pantaleon __________________ Joerelyn Ruedas __________________ Charisse Brittney Ann Vicente __________________ THE SCIENTIFIC METHOD: IDENTIFYING WHICH LIQUID...
    337 Words | 2 Pages
  • Experiment 2: Determination of the Identity of an Unknown Liquid
     The purpose of this experiment is to identify an unknown substance by measuring the density and boiling point. I will be able to conclude which substance is my own from a list of known options stating what its real boiling point and density is. My given unknown liquid code is G9R. This liquid is clear, has a fluid consistency similar to water, and has a strong odour that reminds me of alcohol. Density using a graduated cylinder: Trial 1 Trial 2 Trial 3 Volume of liquid (mL)...
    1,168 Words | 7 Pages
  • Liquid Crystals from Coconut Oil Fatty Acids -
    Liquid Crystals from Coconut Oil Fatty Acids - Investigatory Project Liquid Crystals from Coconut Oil Fatty Acids Abstract Liquid crystals are fluids that are between the solid and conventional liquid phases. Liquid crystals are in widespread use, especially in optical technologies. They are synthesized by combining fatty acids with cholesterol. This study aims to utilize coconut oil as an alternative source of fatty acids for synthesizing liquid crystals since coconut is cheap and...
    451 Words | 2 Pages
  • Gaseous Diffusion Coefficient - 515 Words
    UNIVERSITI TUNKU ABDUL RAHMAN Faculty : Engineering & Science Unit Code : UEME3213 Course : Unit Title : Heat and Mass Transfer Year/ Semester : Year 3/ Semester 2 Lecturer : Session : Experiment 2: Gaseous Diffusion Coefficient Objective To determine gas diffusion coefficient of acetone Introduction The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the...
    515 Words | 4 Pages
  • Lab Experiment 5 - 492 Words
    Title: Liquids and Solids Purpose: The experiment will help determine two important physical properties, boiling and melting point, of liquids and solids. Procedure: Before starting the experiment I gathered all materials appropriate for the experiment and prepare a safe environment for my experiment. I record the boiling point of the Isopropyl Alcohol and the melting point of powdered Acetamide with lab equipment such as the thermometer, capillary tube, beaker, test tube, and burner...
    492 Words | 2 Pages
  • Salt And Sand Lab Report
    Nupoor Matieda October 10, 2014 PD 9/10 Lab Report Separation of a Mixture of Sand and Salt Goal(s): To separate a mixture of sand and salt and to find the percent of each component by mass of each mixture Background Theory: A mixture is a combination of two or more pure substances in which each pure substance retains its individual chemical properties. Mixtures can be separated by physical processes such as filtration and evaporation. Filtration is a process where...
    1,057 Words | 3 Pages
  • Recovery Efficiency of an EOR method
     CHAPTER 2 RECOVERY EFFICIENCY OF AN EOR METHOD 2.1 SWEEP EFFICIENCY The overall recovery factor (efficiency) RF of any secondary or tertiary oil recovery method is the product of a combination of three individual efficiency factors as given by the following generalized expression: Fluid properties influence all three components of recovery efficiency. 1. Viscosities are found in the definition of mobility ratio, which affects areal and vertical sweep efficiency, including viscous...
    1,241 Words | 5 Pages
  • Question of Chemistry - 552 Words
    Q-3. * Because the perfumed incense is in solid state and by lighting of it, it changes from solid state to gaseous state the moment it turns in to gaseous state and gases have a property to spread in all directions. After lightening the incense the molecules of perfume are in a gaseous state and mixing with the molecules of air in the room. All of them undergo random motion at all times as a result of the internal ("heat") energy that they have absorbed. The molecules often bump into each...
    552 Words | 2 Pages
  • Swag Notes - 1014 Words
     Unplug & peel back wiring from water temp sensors, alternator regulator, OX sens, PS sol. Remove the Ancillary belt. DO NOT LET THE ANCILLARY BELT TENSIONER SNAP BACK - IT CAN DAMAGE THE HOUSING Removing the alternator. Remove the lower radiator hose from pump housing. Remove the 2 bolts attaching the metal engine coolant pipe to the rear pump housing. Remove the 2 bolts holding the top water outlet pipe to block - this is best done by removing the front turbo inlet pipe bolts so...
    1,014 Words | 5 Pages
  • Emulsion in mayonnaise - 469 Words
    As we known, water and oil do not mix up together because the density of water is higher than that of oil, thus the oil will upside the water. Emulsion is a mixture of two nonsoluble liquids that one liquid into other, in the form of drops. There are two kinds of emulsion: oil in water and water in oil while depends on whether the continuous phase is the water or oil. Mayonnaise is an example of oil in water emulsion consists egg yolk and oil that formed a stable emulsion by adding oil into egg...
    469 Words | 2 Pages
  • Properties of Matter - 820 Words
    1. What is the ability of one substance to dissolve in another substance called? The ability of one substance to dissolve in another is called solubility. 2. What are the three properties of matter? The three properties of matter are gas, solid, and liquid. 3. What is matter made up of? Matter is made up of tiny particles. 4. Compare and contrast the movement of particles in solids, liquids, and gases. Solids: They move back and forth. They do not change places with each...
    820 Words | 3 Pages
  • Solid control Equipment - 259 Words
    In the mud solid phase, we can according to their function can be divided into two classes. One kind is useful solid phase, such as bentonite, chemical treatment agent, barite powder, etc; Another kind is useless solid phase, such as drilling cuttings, inferior bentonite, sand, etc. So-called drilling fluid solids control, is to eliminate the harmful solid phase, save useful solid phase to meet the requirements of drilling technology to drilling fluid performance. The importance value of the...
    259 Words | 1 Page
  • Soap Making - 411 Words
    ----------Significance of the PROJECT------ We chose a recipe that would be very easy for beginners. The productivity--achieving the quantity and quality while making a wide array of options in soap making. The main idea of our study is try to come up with the other ways on how to help out the conditions of poverty in our country, this study might give them a chance on how to be more productive or maybe inventive, be more efficient, and provide information on how to use some...
    411 Words | 3 Pages
  • Diffusion Coefficient Apparatus - 508 Words
    EXPERIMENTAL MANUAL Mass Transfer Lab Diffusion Coefficient Apparatus DEPARTMENT OF CHEMICAL ENGINEERING UNIVERSITY OF GUJRAT, GUJRAT. GENERAL OPERATING PROCEDURES General Start-up Procedure:  Prior to running an experiment, students are advised to perform the following startup procedure.  Fill the water with clean (preferably filtered) water to approximately 20 mm from the top.  Plug the main cable to the electrical supply. Be sure that the voltage of the supply is correct...
    508 Words | 4 Pages
  • Experiment 3 of General Biology I
    EXPERIMENT 3: IDENTIFICATION OF FOOD CONSTITUENTS IN MILK. INTRODUCTION: In this experiment two milk samples are given and its compositions are tested using different methods such as using benedict solution to test the presence of reducing sugar, using copper II sulphate to test the presence of protein, using K3( to test the presence of fat. However in this experiment, not only are the milk tested for its composition, the amount of the particular substance such as reducing sugar, protein...
    1,221 Words | 5 Pages
  • Evaporation - 350 Words
    Evaporation is one of the main methods used in chemical industry for concentration of aqueous solutions that means the removal of water from solution by boiling the liquor in a suitable type of evaporator and withdrawing the vapor (Coulson & Richardson,1983). The objective of evaporation is to concentrate a solution consisting of non-volatile solute and a volatile solvent. In the overwhelming majority of evaporations the solvent is water. Normally, in evaporation the thick liquor is the valuable...
    350 Words | 2 Pages
  • na lie - 261 Words
     INTRODUCTION. SOLIDS, LIQUIDS AND GASES have properties that are use to describe how they behave, e.g. for solids it has a definite shape, you can hold a solid rock in your hand. You can push on a solid brick wall. Scientists say a solid is something that has shape. A solid resists any change in its shape. TASKS 2. LOOK AT THE PICTURES BELOW FOR SOLID, LIQUID AND GAS AND WRITE DOWN THREE PROPERTIES OF EACH? Wood as a Solid. Solid has a fixed shape Its particles...
    261 Words | 2 Pages
  • Apsa 80 - 597 Words
    What is APSA-80? APSA-80, a product of Amway is an all purpose spray adjuvant which on mixing with insecticides, fungicides, herbicides and defoliators increases their efficacy. As a result of that, the crops, fruits and vegetable are better protected from diseases, pests and unwanted herbs, resulting in more productive yield. This adjuvant has 80% of active ingredients and this can be mixed in any solution to improve its performance many times Note : APSA-80 is neither an insecticide nor a...
    597 Words | 2 Pages
  • Succsess - 2080 Words
    The differences in the characteristics of states of matter are given in the following table. S. No. | Solid state | Liquid state | Gaseous state | 1. | Definite shape and volume. | No definite shape. Liquids attain the shape of the vessel in which they are kept. | Gases have neither a definite shape nor a definite volume. | 2. | Incompressible | Compressible to a small extent. | Highly compressible | 3. | There is little space between the particles of a solid. | These particles have a...
    2,080 Words | 10 Pages
  • Density Pre Lab Report
    Student: Keila Dukuze Date: Feb/10/2013 Lab# 3 Section: 110 Pre-Lab Report Determining the Density of Various Liquids and Solids The purpose of this experiment is to determine the weight (density) of certain liquids and solids in chemistry. These liquids include; Water, Hexane, Carbon Tetrachloride, and solids include; Copper, Zinc, Lead and, Aluminum. It’s important to know the weight of these products so you can properly conduct experiments and make clear observations. Different...
    292 Words | 1 Page
  • Lord of the Flies Civilization vs Savagery
    Name____________________ Comparing Rates of Evaporation Several factors determine how fast a sample of liquid will evaporate. The volume of the sample is a key factor. A drop of water takes less time to evaporate than a liter of water. The amount of energy supplied to the sample is another factor. In this lab, you will investigate how the type of liquid and temperature affect the rate of evaporation. Problem: How do intermolecular forces affect the evaporation rates of liquids?...
    527 Words | 3 Pages
  • Density and Ml - 426 Words
    Reporter:___________________ Instructor:___________________ Section:___________________ Date Performed:__________________ Group No.:_________________ Date Submitted:__________________ Experiment # 2 Density INTRODUCTION: The density of a substance is physical property that requires measurements of mass and volume. The ratio of the mass per unit volume is density, d and is written as (D = m/v). Using the metric system, the ratio for solids and liquids is expressed in g/mL or...
    426 Words | 2 Pages
  • Investigatory Project - 858 Words
    “HOW TO MAKE NATURAL INSECTICIDES” Natural insecticides can be non-toxic to humans and pets and safe for the environment. The simplest homemade insecticide combines water and liquid soap. You can also base a natural insecticide on neem oil, or on painted daisies grown in your garden. You can make a natural insecticide with ingredients you buy at local stores or markets, the garden store or herb shop. Soap Insecticide 1.Make a basic homemade bug killer by mixing 2 tbsp. (29.6 ml) of liquid...
    858 Words | 3 Pages
  • Science Fair - 318 Words
    Fill the bottle 3/4 full with vegetable oil. Put some water 2.Add water to the remainder of the bottle, almost to the top but without it overflowing. 3.Add 10 drops of food coloring, to make the solution appear fairly dark. 4.Cut the Alka-Seltzer into 8 pieces. 5.Drop one of the tiny pieces into the oil and water mixture. 6.The mixture will start to bubble. 7.Wait until the bubbling stops and add another piece of Alka-Seltzer. 8.Continue until there is no more...
    318 Words | 2 Pages
  • Exp 5 Soo Jin Park 73426
     Name: Soo Jin Park Date: 02/20/15 Exp 5: Liquids and Solids Lab Section: 73427 Data Table: Boiling Point Trial 1 Trial 2 Trial 3 Temperature when the last bubble has emerged __86.5˚C _89.4_˚C 87.6_˚C Average temperature from all three trials 87.8˚C % error __6.55_% Melting Point Trial 1 Trial 2 Trial 3 Temperature when the acetamide melts _85.7_˚C 89.5__˚C 87.4_˚C Average temperature from all three trials __87.5˚C % error __8.07__%...
    326 Words | 2 Pages
  • Lab for Chemistry - 397 Words
    Discussion The purpose of the Density Lab was to determine the identity of four unknown solids and two unknown liquids by calculating their densities and comparing them to a density chart, taking into account error analysis and finally classifying the substances. In order to calculate this density, we first found the mass of the container that was to be holding the substances. We then found the volume of the substance, and lastly determined the mass of the container and substance. We...
    397 Words | 2 Pages
  • Viscosity Lab Report - 986 Words
    Results: Since the mass of the ball bearing used in this experiment was very light, 20 balls were measured and the result was divided by 20 for better accuracy. This procedure was repeated for the sizes and the results are as follows: Diameter (mm) Mass (kg) 2 0.04 3 0.075 4 0.11 To find out the densities of the three balls, the following formula was used: Density= (mass of the ball)/(Volume of the ball)= mass/(4/3 π r^3 ) Density of 2mm ball = (0.04⁄1000)/(4/3 π 〖(0.001)〗^3...
    986 Words | 5 Pages
  • density - 257 Words
    Purpose: The purpose of this lab was to help students analyze and determine the density of various objects. Also, this lab helped students to become more confortable with the use of the different instruments to determine the densities. Questions: 1) There were a few major sources of error. One source of error is the inaccuracy of a human. The calculations provided by a person, may not have been exactly accurate. Another source of error was that the objects given to us may have not been...
    257 Words | 1 Page
  • Surface Tension - 662 Words
    INTRODUCTION Wetting is a phenomenon that we see every day. It may be a rain drop on a leaf or soup on a spoon. It is also seen in how an ink an ink, adhesive or coating spreads on a film. Wetting, in simple terms, is the ability of a liquid to spread across the surface of a solid to produce a uniform, continuous surface. How a solid is settled by a liquid is measured by the surface tension of the liquid relative to the surface tension of the solid. For a coating Adhesive or ink to be usable...
    662 Words | 2 Pages
  • Lab Report Cellular Respiration
    Cellular respiration lab Procedure Materials: 2 water baths 2 rulers 2 thermometers ½ mL of germinated seeds (in each syringe) 2 syringes ½ mL non-absorbent cotton (in each syringe) ½ mL absorbent cotton (in each syringe) KaOH (3 drops in each) 2 capillaries tubes 4 washers (2 in each syringe) Tape Ice Soap-nanometer fluid (one drop in each syringe) Steps: For each respirometer 1. Glue the capillary to the syringe making sure there are no leaks and that it is not clot...
    359 Words | 2 Pages
  • Lolol - 445 Words
    Analysis The melting temperature of sodium thiosulfate can be determined by checking our data. Since a substances temperature remains constant while it undergoes a phase change, we can see that our sample changed from a sold to a liquid at 46.0°C. This is the temperature of the sample between time periods t1= 130s and t2= 480s. In order to find the Heat of Fusion (∆H Fusion) of sodium thiosulfate we used to calculate how much energy the water bath lost during the sample’s melting period....
    445 Words | 2 Pages
  • master - 530 Words
    Unit 004: Understand how to apply scientific principles within mechanical services engineering Glossary of terms Term Explanation Alloy A metal made up of a combination of two or more materials. Atmospheric pressure The weight of air creates a pressure on the Earth’s surface and the pressure exerted by the weight of air pressing down on the ground below will vary depending on the ground’s height above sea level. Boiling When a liquid vaporises. Capillary action When water is...
    530 Words | 3 Pages
  • biology - 894 Words
    Emulsifiers What does an emulsifier do? Emulsions in food are mixtures of oil and water. These normally do not mix and will separate if left without an emulsifier. Emulsifiers are among the most frequently used types of food additives. They are used for many reasons. Emulsifiers can help to make a food appealing. The example of the mayonnaise without the emulsifier shows how unappealing it would be if the oil and water separated before it was used. Emulsifiers have a big effect on the...
    894 Words | 4 Pages
  • Gating Systems - 916 Words
    Casting Lab 3: Gating Systems and Fluidity Introduction The purpose of the lab was to compare the difference in cross sectional areas, sprue size and location in gating systems as well as the totest the influence of the molten aluminum temperature had on the fluidity of the mold. We investigated which areas in the gating system filled, the time it took to pour the metal, the temperature effects on the fluidity. These tests are important when designing the mold, also when choosing which...
    916 Words | 3 Pages
  • Organic Lab Report - 916 Words
    Background The melting point of a compound is the temperature at which the solid is in equilibrium with its liquid. A solid compounds changes to a liquid when the molecules acquire enough energy to overcome the forces holding them together. A mixture melting point is useful in confirming and used to indentify an unknown compound, which we will be doing in this particular experiment. Purpose Measure the melting points of pure benzoic acid and pure mandelic acid. Determine the eutectic...
    916 Words | 4 Pages
  • Isolation of organic compounds from mixtures by solvent extraction.
    EXPERIMENTAL PROCEDURE: 1. 2.07 g of the mixture of naphthalene and benzoic acid was weighed accurately on a balance. The mixture was then dissolved in 40 ml dichloromethane and the solution was poured into a separatory funnel. 2. 20 ml of aqueous sodium bicarbonate solution was added to the dichloromethane. A stopper was placed on the separatory funnel and was shaken and pressure was frequently released. The 2 liquids separated into clear layers and the lower layer (dichloromethane layer) was...
    277 Words | 2 Pages
  • Melting Point Lab OC
    Objective: The objective of the Melting Point Lab was to learn the technique of melting point determination. Also, to discover the identity of an unknown compound from using the mixed melting point method. Introduction: The range of temperatures between the temperature at which the first crystal just stats to melt and the temperature at which the last crystal disappears is known as a melting point. There are two many reasons that melting points provided us. The first purpose is to...
    848 Words | 3 Pages
  • Density and Specific Gravity - 656 Words
     Difference of Density and Specific Gravity Lab Report Class 237 Performed: October 1, 2013 Due: October 7, 2013 Introduction Purpose: The Determining Density and Specific Gravity lab tests student capabilities of using equipment to measure volume, mass, density, and specific gravity of solids and liquids with accuracy. Equipment: Students use the electronic balance to measure the mass of metals, pipettes, and...
    656 Words | 5 Pages
  • Bio Lab - 285 Words
    EXERCISE 3 PHYSICO-CHEMICAL REACTIONS IN THE CELL ACTIVITY SHEET BROWNIAN MOVEMENT: 1. What is Brownian movement? - 2. Is there a difference in the speed of movement among the different sized particles of India ink? If so, explain the difference. - 3. Is there a difference in the speed of movement of the India ink particles in hot and cool slides? If so, explain. - DISPERSION SYSTEMS IN PROTOPLASM 4. DEFINE THE FF: a. Solute: The dissolve matter in a solution; The...
    285 Words | 2 Pages
  • The Phase Change - 265 Words
    Benjamin Martinez #827 Ms. Thompson Science November 3, 2014 The Phase Change There are three main stages of matter, solid, liquid, and gas. With these stages of matter are six types of phase changes, two for each stage. When going from solid to a liquid, it is referred to as melting, and when going from liquid to a solid freezing. In melting, the solid’s molecular movement increases while the attraction decreases. In freezing, the molecular movement decreases while the attraction increases....
    265 Words | 1 Page
  • The persona COmputer - 624 Words
    Name: Ramlee Rudebaugh IPS 8- Chapter 3 Questions, 43-52 Score March 3, 2014 38 Use complete sentences and show your work with units on each problem. 43. How can you distinguish between unlabeled pint cartons of milk and of cream without breaking the seals? 2 By calculating the mass and dividing it by the volume to get the density, then compare densities. 44. A student has several different-size samples of substances I and II. She measures the masses and volumes of...
    624 Words | 3 Pages
  • Viscosity Experiment - 390 Words
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