Diffusion Essays & Research Papers

Best Diffusion Essays

  • Diffusion - 579 Words
    "Diffusion - How atoms move through solids" Diffusion means mass transport by atomic motion. The mechanisms of Gases & Liquids is known as random (Brownian) motion
and for solids is known vacancy diffusion or interstitial diffusion. Simply we can define diffusion as, the movement of particles in a solid from an area of high concentration to an area of low concentration, resulting in the uniform distribution of the substance. (Diffusion chapter 5, 2008, p.1) Ronald D. Kriz(1999) suggests...
    579 Words | 2 Pages
  • Diffusion - 431 Words
    Cells make up every living things. One important part of a cell is the cell membrane. The cell Membrane is a thin protective coating around a cell that regulates what goes in and out of the cell. An important part of regulating this is passive transport. Passive transport is the movement of materials through membranes without any input of energy. One type of passive transport is diffusion. Passive transport is the diffusion of substances across a membrane. In diffusion, molecules will...
    431 Words | 2 Pages
  • Diffusion - 514 Words
    Ronald Wilson Pd:4th 11/16/12 Introduction In this experiment diffusion and osmosis is the main idea. When using diffusion and osmosis you are trying to separate different solute concentrations on either side of the membrane. Only a solute's relative concentration, or water potential, affects the rate of osmosis. The higher the concentration of solutes, the faster water will flow through the membrane to equalize the concentration. The way we describe the movement from higher to lower...
    514 Words | 3 Pages
  • diffusion - 828 Words
    Diffusion Introduction Diffusion is the net movement of ions or molecules from a region of high concentration to a region of low along the concentration gradient until equilibrium has been reached. The steeper the gradient the faster the rate of diffusion. There are a few types of diffusion. Three (3) of those are: Facilitated Diffusion- refers to diffusion of substances across a cell membrane with the help of transport protein. Dialysis- refers to the diffusion of solutes across...
    828 Words | 4 Pages
  • All Diffusion Essays

  • Diffusion - 2657 Words
    Scientific Paper on Diffusion 2 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using two tests: the glass tube test and the agar-water gel test. In the glass tube set-up, two cotton plugs soaked in two different substances (HCl and NH4OH) were inserted into the two ends of the glass tube. The substance with the lighter molecular weight value (NH4OH, M = 35.0459 g/mole) diffused at a faster rate (dAve = 25.8cm), resulting in the formation of a white ring around...
    2,657 Words | 8 Pages
  • Diffusion - 1665 Words
     The Effect of Molecular Weight and Time on the Diffusion Rate of Potassium Permanganate, Potassium Dichromate, and Methylene Blue.1 Arantxa Alex Carpio Group 1 Sec. X – 4L March 24, 2015 ABSTRACT The effect of molecular weight and time on the rate of diffusion was determined using the agar-water gel test. A petri dish of agar-water gel with three wells was prepared and a prepared solution of each substance was dropped on each well; one with potassium...
    1,665 Words | 10 Pages
  • Questions of Diffusion - 375 Words
    Simple diffusion and facilitated diffusion both _______. move solutes with their concentration gradient Which of the following would decrease the rate of facilitated diffusion? decreasing the number of carrier proteins What happens to facilitated diffusion when the protein carriers become saturated? The maximum rate of transport will occur. What happened when sodium chloride was added as a solute in the left beaker? There was no change in the transport rate of glucose. Which of the...
    375 Words | 2 Pages
  • Diffusion and Osmosis - 1985 Words
    The Effects of Osmosis and Diffusion The experimentation of last week’s lab was in order to test the many effects of diffusion and osmosis amongst four experiments. One such experiment was testing the effects of molecular weight on diffusion in relation to the use of Agar. The methods performed included the use of two acids, HCl and acetic acid. Both acids were placed into an Agar-filled dish and, over increments of 15 minutes, data collection was taken based off the diffusion rate and...
    1,985 Words | 6 Pages
  • Diffusion Lab - 971 Words
    Diffusion Lab Purpose: - To determine how temperature affects diffusion. - To determine how type of membrane affects diffusion. - To determine how size of solute affects diffusion. - To determine how concentration of solute affects diffusion. - To observe plant cells in hypertonic solution. Hypothesis: - I believe that warm watter will diffuse the fastest. - I believe that the mass of the potato in distilled water will increase. - I believe that the mass of the potato in...
    971 Words | 5 Pages
  • Diffusion of a Liquid. - 421 Words
    Diffusion is the movement of molecules from areas of high concentration to areas of low concentration. With diffusion no energy is required and it is caused by kinetic energy. The rate of diffusion can be affected by many things including temperature, molecular weight, and movement. To test the rate of diffusion a drop of dark food coloring was added to a glass of tap water and it was timed to see how long it took for the drop to reach the bottom of the glass. This procedure was repeated...
    421 Words | 1 Page
  • Osmosis and Diffusion - 1104 Words
    Joshua Annan Biology Section-04 Diffusion and Osmosis December 14,2012 Alexis, Adiba, Elliot and Joey Purpose: The purpose of this lab is to get a better understanding of osmosis and diffusion in molecules. We will do this by studying different solutions and how they move through the permeable membrane. Hypothesis: The three different possible predictions were the lab were that the mass would stay the same, the mass will increase, or the mass will...
    1,104 Words | 4 Pages
  • Diffusion lab - 399 Words
    Erika Veidis AP Biology – Pd. 1 October 5, 2009 Diffusion and Osmosis Pre-Lab Exercise 1A: 1. The purpose of this section is to observe the diffusion of solutes in water by using dialysis tubing. 2. Glucose will be present in the dialysis bag, and not in the cup of distilled water, because it is a small molecule that will be able to pass through the tiny pores in the dialysis tubing. Starch will be present in the cup of water and not in the bag, because starch molecules are much larger...
    399 Words | 2 Pages
  • Diffusion and Glucose - 1471 Words
    Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name Lab Time/Date ___ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Size of material and concentration 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what I...
    1,471 Words | 7 Pages
  • biology-diffusion - 890 Words
    Simple diffusion The term simple diffusion refers to a process whereby a substance passes through a membrane without the aid of an intermediary such as a integral membrane protein. The force that drives the substance from one side of the membrane to the other is the force of diffusion. In order for substances to pass through a cell membrane by simple diffusion it must penetrate the hydrophobic core of the phospholipid bilayer. The types of molecules that can do this are themselves...
    890 Words | 3 Pages
  • Diffusion and Osmosis - 1370 Words
    DIFFUSION AND OSMOSIS: WHAT’S TO EXPECT? Diffusion and osmosis are very important in biological process. Diffusion is the movement of molecules or ions from a region of their high concentration to a region of their low concentration. Osmosis is the diffusion of water molecules across a semipermeable membrane. To gain a better understanding of diffusion and osmosis, we examine multiple experiments to show diffusion and osmosis in animal cell, plant cell and synthetic cell. In our first...
    1,370 Words | 4 Pages
  • Diffusion of Innovation - 1697 Words
    The Anderson School at UCLA POL 2002-05 Numbers 101: The Diffusion of Innovations Copyright © 2002 by Richard Rumelt. This technical note is a quick introduction to the use of diffusion models in forecasting. We use diffusion models in cases where an innovation diffuses through a population. In this note we focus on the simplest diffusion model: the logistic model. This model produces the familiar “S” curve in which a period of rapid acceleration is followed by deceleration and,...
    1,697 Words | 22 Pages
  • Diffusion of Osmosis - 786 Words
    Diffusion Experiment: Osmosis in Sucrose Solutions Abstract We used dialysis tubing to simulate a semi-permeable membrane. Since molecules diffuse from their higher concentration to their lower concentration, water will move across the membrane in response to this concentration. While conducting this lab we were able to observe passive transport through diffusion and osmosis. Introduction Osmosis is a specialized case of diffusion that involves the passive transport of water....
    786 Words | 3 Pages
  • Diffusion in Gases - 342 Words
    Experiment #1 Date: September 13, 2011 Title: Diffusion in Gases I Aim: To observe the diffusion of bromine Apparatus and Materials: Glass tube, bromine, fume chamber Diagram: Procedure: -Liquid bromine was placed in a jar and covered Observations: When first placed in the jar the original color of bromine was red-brown. As it began to diffuse its color changed from dark brown to a lighter brown until it becomes a yellow-like orange color. As it was diffusing liquid bromine changes its...
    342 Words | 1 Page
  • Diffusion and Osmosis - 1606 Words
    Kristen Demaline Bio 1113, Lab 3: Diffusion and Osmosis Osmolarity of Plant Cells In this class, we learned about hypertonic, hypotonic, and isotonic solutions. Hypertonic solutions have a higher concentration of solutes outside of the membrane, hypotonic solutions have a lower concentration of solutes outside the membrane, and isotonic solutions have an equal amount of solutes inside and outside of the membrane (Morgan & Carter, 66). When the solute...
    1,606 Words | 5 Pages
  • Osmosis/Diffusion - 917 Words
    Introduction: Diffusion and osmosis are passive processes of transport. Passive transport involves no disbursement of energy by the cell. Diffusion movement is from high concentration to low concentration, which the driving force for this type of movement is kinetic energy particles themselves. Which crystal (Methylene blue, solid or Potassium Permanganate KMnO4-purple) will move further than the other due to the driving force (kinetic energy)? My prediction is that Potassium Permanganate...
    917 Words | 3 Pages
  • Molecular Diffusion - 2566 Words
    ABSTRACT A molecular diffusion experiment was conducted with the goal of determining the diffusion coefficient of acetone into air. For this experiment, acetone was placed in a capillary tube and was allowed to diffuse into non-diffusing air that was passed over the test tube at the temperature of 50oC.Thetemperature is kept constant and air stream is passed over the top of the tube to ensure that the partial pressure of the vapor is transferred from the surface of the liquid to be air stream...
    2,566 Words | 13 Pages
  • Diffusion Lab - 1341 Words
     Diffusion Through Membranes IB Biology 11 Diffusion Through Membranes OBJECTIVES In this experiment, you will Use a Conductivity Probe to measure the ionic concentration of various solutions. Study the effect of concentration gradients on the rate of diffusion. Determine if the diffusion rate for a molecule is affected by the presence of a second molecule. BACKGROUND Diffusion is a process that allows ions or...
    1,341 Words | 5 Pages
  • Rate of Diffusion - 1524 Words
    The Correlation between the Diffusion Rate of a Substance and its Molecular Weight ABSTRACT To test the effect of molecular weight on the rate of diffusion, various experiments were performed. One of which is the glass tube test wherein cotton balls of the same size were moistened in two different substances (NH4OH and HCl). These cotton balls were plugged at each side of a glass tube. After some time, formation of a white ring occurred. The white ring, in fact, is a product of the reaction...
    1,524 Words | 5 Pages
  • Diffusion of Molecules - 844 Words
    LAB EXERCISE: Diffusion and Osmosis Laboratory Objectives After completing this lab topic, you should be able to: 1. Describe the mechanism of diffusion at the molecular level. 2. List several factors that influence the rate of diffusion. 3. Explain why diffusion is important to cells. 4. Describe a selectively permeable membrane, and explain its role in osmosis. 5. Define hypotonic, hypertonic, and isotonic in terms of relative concentrations of osmotically active substances. 6....
    844 Words | 3 Pages
  • Diffusion and Osmosis - 1962 Words
    Diffusion of Ammonium hydroxide with red litmus paper Definition of diffusion 1. Diffusion is the process in which particles move from an area of high concentration to an area of low concentration in order to evenly spread out. 2 Diagram. 3. During the diffusion tube experiment I noted that firstly ammonium hydroxide was placed on to a piece of cotton wool. The cotton wool (with the ammonium hydroxide) was then placed in to a diffusion tube containing around 10 pieces of curled red...
    1,962 Words | 6 Pages
  • Simple Diffusion - 780 Words
    Simple Diffusion Activity 1: Simulating Simple diffusion 1. What is the molecular weight of Na+? 22.99 or 23 2. What is the molecular weight of Cl-? 35.45 3. Which MWCO dialysis membranes allowed both of these ions through?50,100, 200 4. Which materials diffused from the left beaker to the right beaker? Urea, NaCl and glucose diffused 5. Which did not? Why? Albumin was too large to diffuse into the right beaker. Activity 2: Simulating Dialysis 6. What happens to the urea...
    780 Words | 3 Pages
  • Diffusion Lab - 907 Words
    Lab One – Diffusion and Osmosis SECTION ONE: Methods Lab 1 – Diffusion and Osmosis can be broken down into four parts (A, B, C, and D). Lab 1A – Diffusion In this exercise, we tested diffusion through dialysis tubing. This was done through a demo with the teacher, rather than individually in groups. First, a piece of 2.5cm dialysis tubing was obtained. Then one end was folded and clipped securely so that a solution poured into the bag would not leak out. Next, the other side of the bag...
    907 Words | 3 Pages
  • What Is Diffusion? Explain the Various Form of Diffusion.
    Diffusion is one of several transport phenomena that occur in nature. A distinguishing feature of diffusion is that it results in mixing or mass transport, without requiring bulk motion. Thus, diffusion should not be confused with convection, or advections, which are other transport mechanisms that utilize bulk motion to move particles from one place to another. In Latin, "diffundere" means "to spread out". There are two ways to introduce the notion of diffusion: either a phenomenological...
    766 Words | 3 Pages
  • Diffusion and Albumin Glucose Na+
    Name: Leslie Estrada Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion, molecules move You correctly answered: a. from high concentration to low concentration. 3. Which of the following dialysis membranes has the...
    655 Words | 8 Pages
  • Osmosis and Particles Diffusion - 954 Words
    Diffusion, Osmosis, Active Transport There are two ways in which substances can enter or leave a cell: 1) Passive a) Simple Diffusion b) Facilitated Diffusion c) Osmosis (water only) 2) Active a) Molecules b) Particles Diffusion Diffusion is the net passive movement of particles (atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration. It continues until the concentration of substances is uniform throughout. Some major examples of...
    954 Words | 5 Pages
  • Lab Report on Osmosis and Diffusion
    Lab Report on Osmosis and Diffusion Biology 1, Period 3 March 15, 2010 Lab Team: Jason Perez, Kicia Long, Chris McLemore Purpose: The purpose of this lab is to observe the acts of passive transport: diffusion and osmosis in a model membrane system. The experiment will show how molecules in solution move from areas of higher concentration to areas of lower concentration. The model membrane is dialysis tubing. Materials Used 2.5 cm dialysis tubing 15% glucose...
    750 Words | 3 Pages
  • Osmosis and Diffusion Lab - 2240 Words
    The purpose of this lab was to observe the rate of osmosis and diffusion, as well as the effect of molecular size of the particles on this rate. Part I of the lab was a demonstration of osmosis and diffusion, that dealt with raisins in different liquid environments, each with a different concentration of sugar. Part IV of the lab was using the same idea as the demonstration, by putting objects in different concentrations of a substance; in this case elodea leaves in salt water. In both cases,...
    2,240 Words | 9 Pages
  • Osmosis and diffusion lab report
    Introduction: The purpose of experiment 1 was to demonstrate the principle of simple diffusion and understand how to make % solutions. Exercise 2 demonstrated the principle of osmosis: observing the movement of water by osmosis from an area of lower concentration of a solute to an area of higher concentration of a solute. Materials and Method: Refer to pages 47-51 of Bio 203L Lab Manual. Results/ Discussion: The effect of the chloride ion on its rate of diffusion in agar means it will...
    267 Words | 1 Page
  • Diffusion and Osmosis Ap Bio
    4A- The hypothesis was partially supported because glucose left the bag and is proven by the positive test on the surrounding water. Also the beaker turned orange because of osmosis which attests to glucose leaving the bag. Iodine Potassium Iodine and water entered the bag. This was proven by the color change in the starch test as the bag turned black also because of osmosis. The only thing that the hypothesis lacked was that starch did not move at all. The beaker stayed yellow before and after...
    1,371 Words | 5 Pages
  • Diffusion and Right Beaker - 1006 Words
    PhysioEx™ Lab: Cell Transport Mechanisms and Permeability Activity 1: Simple Diffusion Chart 1 Dialysis Results (Average Diffusion rate in mM/min) Solute Membrane (MWCO) 20 50 100 200 NaCl (—) 0.0150 0.0150 0.0150 Urea (—) (—) 0.0094 0.0094 Albumin (—) (—) (—) (—) Glucose (—) (—) (—) 0.0040 1) Which solute(s) were able to diffuse into the right beaker from the left? NaCl, Urea, Glucose 2) Which solute(s) did not diffuse? Albumin 3) If the solution in the left...
    1,006 Words | 5 Pages
  • diffusion across cell membrane
    Biology Lab Report Title: Diffusion of substances across the membrane Aim: The aim of the experiment is to investigate the relationship between the diffusion and the surface area to volume ratio with the help of agar blocks and hydrochloric acid. The research question is how does the difference in surface area to volume ratio affect the rate of diffusion? Agar is a jelly like substance, which may turn red when kept in hydrochloric acid as the acid diffuses through the membrane of the agar...
    691 Words | 4 Pages
  • Diffusion Osmosis Lab Report
    Ellice Johnson Period 1 October 12, 2012 Diffusion and Osmosis Shown In Solutions Section 1: Abstract This lab, title Diffusion and Osmosis, was centered around the diffusion across a cellular membrane and how exactly materials move and diffuse in concentrations. Both diffusion and osmosis are forms of movement that are part of passive transport dealing with cell membranes. Diffusion is where the solutes move from an area of high concentration to a low concentration. Water goes through the...
    1,308 Words | 7 Pages
  • Brownian Motion, Diffusion and Osmosis
    Brownian motion This is, presumably the random drifting of particles suspended in a fluid (a liquid or a gas) .This movement was discovered and later named after botanist Robert Brown (1773-1858). He was a Scottish botanist and palaeobotanist who made important contributions (including Brownian motion) to botany largely through his pioneering use of the microscope. The scientist who made Brownian motion famous is Albert Einstein, who brought the phenomenon to the attention of the...
    1,076 Words | 4 Pages
  • Simple Diffusion: Lab Activity
    Activity 1: Simple diffusion Introduction: Simple diffusion is the net movement of substances from a region of high concentration to a region of low concentration so its overall net movement is along the concentration gradient, simple diffusion does not require energy therefore it is 'passive', substances are diffused across the membrane between the phospholipids. Materials and methods: * 20 mwco dialysis membrane * 50 mwco dialysis membrane * 100 mwco dialysis membrane * 200...
    2,217 Words | 8 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
  • diffusion across permeable membrane
    Marie Gorjon Mrs. B Anatomy & Physiology 168 March 14, 2014 Diffusion across a Selectively Permeable membrane Introduction: Diffusion is movement of molecules from one area of concentration to another. This process is vital for the life functions of cells. Cells have selectively permeable membranes that allow only certain solutions to pass through them. Osmosis is a special kind of diffusion that allows water to go through semi-permeable membranes of high water potential to a region of...
    679 Words | 3 Pages
  • Osmosis and Diffusion Lab - 600 Words
    Osmosis and Diffusion Title: Diffusion and Osmosis AP Lab 1 Purpose: The purpose of this activity is to determine the effects of a selectively permeable membrane on diffusion and osmosis between two solutions separated by a membrane. Hypothesis: Procedures: In lab manual Material: In lab manual Background Information: Data: Table 1 Diffusion of glucose and iodine. | Color | Glucose | Time | Dialysis Bag | Beaker | Dialysis Bag | Beaker | Start | | | | | 30 minutes...
    600 Words | 3 Pages
  • Diffusion Lab Report - 2287 Words
    1.0 Introduction 1.1 Aim and Assumptions: The aim of this experiment is to observe the rate of diffusion of diethyl ether vapour into stagnant air, and then determine the diffusivity. An error analysis of this calculation also had to be carried out. The following assumptions made were: * Diethyl Ether is an ideal gas * Partial pressure at the top of the tube was equal to zero * Mass transfer resistance between the liquid surface at the bottom of the tube is insufficient, compared...
    2,287 Words | 7 Pages
  • Biology lab report diffusion
    Nikhil Gopalam October Mailbox #55 Affects of Osmosis and Diffusion Introduction: Perfume spreads in a room, hands bloat when left in water for too long (shriveling is a common misconception), a tea bag’s contents diffuse through the water. These are all examples of diffusion and osmosis. These phenomena happen everyday and people don’t realize what is actually happening. The purpose of the lab is to see the effects of diffusion and osmosis. In part B, the higher the concentration of...
    919 Words | 4 Pages
  • Biology Diffusion Experiment - 769 Words
    Title: What is the effect of concentration of acid on the rate of diffusion in agar blocks? Aim: To investigate how the concentration affects the rate of diffusion of hydrochloric acid through agar blocks Research Question: To determine how will different concentrations (0.1M, 0.2M, 0.3M, 0.4M, 0.5M) of hydrochloric acid affect the rate of diffusion of sodium chloride through agar blocks? Introduction-include prediction; information you have researched before Diffusion refers to the passive...
    769 Words | 5 Pages
  • Diffusion and Osmosis Lab Report
    Diffusion and Osmosis NGSSS: SC.912.L.14.2 Relate structure to function for the components of plant and animal cells. Explain the role of cell membranes as a highly selective barrier (passive and active transport). SC.912.L.14.3 Compare and contrast the general structures of plant and animal cells. Compare and contrast the general structures of prokaryotic and eukaryotic cells. AA Background: (Source: www.explorelearning.com) Diffusion is the process in which there is a net movement of...
    1,152 Words | 5 Pages
  • Law of Diffusion of Gases - 689 Words
    Thomas Graham studied the behavior of the diffusion of gases of unequal densities when placed in contact with each other, using air as his control. He wanted to numerically prove how the diffusion of the gas volumes was inversely proportional to the value of the density of the gas, under constant temperature and pressure. The significance of this experiment was that in led to a reevaluation of the concept of the movement of matter, realizing that diffusion dealt with small immeasurable elements...
    689 Words | 2 Pages
  • Diffusion and Osmosis Lab - 2132 Words
    Diffusion and Osmosis Experiment Methods/Materials: 7.1 Experiment: Rate of Diffusion of Solutes In the initial set up of this experiment I had 2 sets of 3 screw-cap test tubes that had each been half-filled with 5% gelatin and 1-mL of the correct dye (either potassium dichromate, aniline blue, or Janus green) in each of the test tubes. I labeled the 3 test tubes of set 1 with which die they contained and marked them “5 ˚C”. Then with the other set I did the same exact thing, except I...
    2,132 Words | 6 Pages
  • Lab Report Gas Diffusion
    S5E1 Gaseous Diffusion 1.0 ABSTRACT In this experiment, our objective is to find out the gas diffusion coefficient, D of acetone in the air. This experiment is conducted at a temperature of 50ºC and atmospheric pressure. The method that is applied to conduct this experiment is called the Winkleman method where the level of acetone (Z) is determined every 15 minutes by using a microscope. With the level of acetone being determined, a graph of t/L+Lo (min /mm) vs. L-Lo (mm) is plotted and...
    3,047 Words | 11 Pages
  • Diffusion Lab Assignment - 1755 Words
    Diffusion Lab Assignment Go to your student portal in eScience and click the “Diffusion” lab. Complete the following assignment: Pre-Lab Questions. Answer the following questions in complete sentences after reading through “Diffusion” information 1. A concentration gradient affects the direction that solutes diffuse. Describe how a molecules move with respect to the concentration. 2. How does the size of a solute affect the rate of diffusion? Consider the size and shape of a molecule in your...
    1,755 Words | 7 Pages
  • Escience Lab 6 Diffusion
    Marshall S. Chavis BIO-110 Lab 6 Diffusion Experiment 1: Table 1: Diffusion Through Liquids Corn Syrup Pickle Juice Time(sec) Blue Dye Red Dye Blue Dye Red Dye 10 15 10 7 10 20 25 30 15 13 30 27 40 17 15 40 28 43 20 17 50 29 46 23 18 60 30 48 24 19 70 31 51 25 23 80 32 51 25 23 90 32 51 25 23 100 32 52 25 25 110 32 52 26 25 120 32 52 26 25 Table 2: Diffusion Rate of Dyes in Corn Syrup Dye Name Molecular Weight Total...
    654 Words | 6 Pages
  • Diffusion and Osmosis of a Potato - 1415 Words
    Diffusion and Osmosis of a Potato Introduction Diffusion labels the spread of molecules throughout unsystematic movement from expanses of higher concentration to areas of lesser concentration. The theory of diffusion is entwined to that of mass transfer propelled by a concentration gradient (Wikipedia). For example, when someone in a room passes gas, the odor will eventually spread out among the room until it has reached equilibrium with the air in the room. Instead of substances moving...
    1,415 Words | 4 Pages
  • Diffusion Review Worksheet - 593 Words
    DIFFUSION REVIEW WORKSHEET 1. Define diffusion and what causes it to occur? The action of spreading the light from a light source evenly so as to reduce glare and harsh shadows. Diffusion is caused when entities are small and moving in molecules. They collide because they are moving at a random pace. The temperature causes diffusion. 2. Define the terms hypertonic, hypotonic, and isotonic solution. * Hypertonic: Having increased pressure or tone, in particular. *...
    593 Words | 2 Pages
  • Osmosis and Diffusion Lab - 275 Words
    Osmosis and Diffusion Lab Observations: Diffusion: | Before | After | Color of liquid sack | clear | blue | Color of liquid in beaker | dirty yellow | golden | Glucose present Stick Test | no | yes | Color of the test stick | No change in color | Green | Osmosis: | Fresh | Salt | Beginning mass of potato | 2.51 | 2.16 | Texture of potato | Dry | Dry | Overnight mass | 3.12 | 1.84 | Overnight Texture | Hard, strong | Squishy, pliable | Data and Analysis:...
    275 Words | 2 Pages
  • Science Diffusion Lab - 466 Words
    Biology Lab #1: Chemical Diffusion Purpose To discover how the size of a cell affects the diffusion of chemicals throughout the cell. Hypothesis I predict that as the cell size increases the diffusion depth and the diffusion rate will decrease. Equipment • Eye protection • 250 mL beaker • Timing device • Scoopula • Ruler • Scalpel • Sodium hydroxide solution • 3 different sized cubes of phenolphthalein agar • Paper towels Purpose...
    466 Words | 3 Pages
  • Blackberry - Innovation-Diffusion - 4582 Words
    Innovation-Diffusion Research Project: Table of Contents Section 1.0 Executive Summary 3 Section 2.0 Background 3 Section 3.0 Literature Review 3 3.1 Theorists Beliefs 3 3.2 Who are the Innovators? 4 3.3 Length of Process of Diffusion / Similar Products 5 Section 4.0 Literature Specific 5 Section 5.0 Consumer Interviews 7 Section 6.0 Conclusions 9 Section 7.0 Works Cited 10 Section 8.0 Appendix A 11 Section 1.0 Executive Summary Section 2.0 Background The BlackBerry...
    4,582 Words | 14 Pages
  • Experiment 5 Gas Diffusion
    EXPERIMENT 5 GAS DIFFUSION COEFFICIENT OBJECTIVES: Determine the gas diffusion coefficient of acetone using the established Winkelmann’s method KEYWORDS Diffusivity, Gas Diffusion Coefficient, Winkelmann’s method OVERVIEW The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and distribution of these materials in bulk. One such property is diffusivity. Mass transfer by diffusion...
    1,211 Words | 7 Pages
  • Diffusion on a Liquid in a Liquid - 1452 Words
    Part A: Diffusion on a liquid in a liquid. I did an experiment with three different glasses of tap water from the faucet. All three cups measured the same which happened to be 13 cm from the top of the cup to the bottom of the cup. I let the water settle, and sit for about an hour so the temperature was the same for all three cups. I then placed one drop of food coloring into the first glass and waited for the coloring to reach the bottom. I calculated 93 seconds. I then went to the second...
    1,452 Words | 5 Pages
  • Lab 6 Diffusion - 325 Words
    Bio Lab Lab 6 Corn Syrup Aloe Vera Gel Time Blue Dye Red Dye Blue Dye Red Dye 10 sec 1 cm 1cm 1cm 1cm 20 sec 2cm 2cm 1.5cm 2cm 30 sec 2cm 1cm 1.5cm 2.5cm 40 sec 2cm .5cm 1.5cm 2.5cm 50 sec N/C .5cm N/C N/C Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 20.00mm 600mm/hr Red Dye 496g 45.00mm 1350mm/hr Aloe Vera Gel Molecular Weight Distance Traveled Speed of Diffusion Blue Dye 793g 15mm 450mm/hr Red Dye 496g...
    325 Words | 2 Pages
  • Factors Affecting Diffusion - 1325 Words
    Factors Affecting Diffusion How does temperature affect diffusion? What is Diffusion? Definition 1: Diffusion is a process where by molecules move from an area of high concentration area to an area of low concentration. Definition 2: Diffusion is an evidence for moving particles. The spreading out of a gas is called diffusion and it takes place in haphazard and random way. Gases diffuse because the particles collide with other particles and bounce of in all directions. For example...
    1,325 Words | 5 Pages
  • diffusion lab reportt - 536 Words
    Fatmata Diffusion Abstract dialysis tubing is, made of cellulose because it’s a selectively permeable membrane. In this experiment, we are testing to see if the solution in the beaker moves into the dialysis bag. Which because of that, Introduction Diffusion and osmosis are two types of transport mechanisms. Diffusion is the movement of molecules from areas of higher concentrations to areas of lower concentration until the molecules are evenly distributed through the area. Osmosis is the...
    536 Words | 3 Pages
  • Osmosis and Simple Diffusion - 651 Words
    Study guide questions: Movements through membrances 1. Prepare a graph that illustrate the diffusion distance of potassium in 10 minutes 2. Explain your graph : 3. Define simple diffusion: 4. Define osmosis: Osmosis can be defined as the movement of solvent molecules across a semipermeable or selectively permeable membrane ,from a region of lower concentration of the solute to that of a higher concentration till equilibrium is attained. 5. What is the change in the level of molasses...
    651 Words | 2 Pages
  • Practice Biology Ia: Diffusion
    Practice Internal Assessment Report Christine Zhu St Pauls Grammar School 00296648 Biology HL Trial 1 & 2: 8/4/13 Trial 3 & 4: 10/4/13 Photo credits: Smarties by Andrew Dean, copyright Rebecca Douglas, retrieved 9/4/13 http://rebeccadouglas.photoshelter.com/image/I0000WDNZi_s2W4A Smarties Diffusion Experiment RESEARCH QUESTION How does changing the colour of smarties affect the extent of its passive diffusion? INTRODUCTION Passive diffusion, also known as simple...
    2,399 Words | 10 Pages
  • Lab 4 Diffusion and Osmosis
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  • The Effect of Molecular Weight on the Diffusion Rate of Substances
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