Semipermeable membrane

Bubble Research What is a bubble and how does it from? Bubbles are a pocket of soap and water that floats in the air. Bubbles form when soap and water mix together. air is blown into it. The soap trap the air and creates a bubble. You can see bubbles in liquid like water. Bubble are in everything you drink. Bubbles don’t have to form with soap. Bubbles in drinks can’t float freely in the air. Only bubbles with soap can flow freely in the air. What is the science behind how bubbles form? When soap

For my egg I took a piece of cardboard and cut it into a small square. Following that I cut three slits in the cardboard in the form of a smaller square. I then took small popsicle sticks and put them into the holes in the cardboard and then hot glued them to the cardboard. To lessen the impact I took rubber bands and attached them across the cardboard from the popsicle sticks. I also did the same on the top with the egg in between. I also slowed the fall by creating a parachute. To make the parachute

the temperature. Dialysis tubing is commonly used to mimic a cell membranes semi-permeable bi-layer. This tubing is commonly used for patients being treated via dialysis by removing toxins from the blood. The clear tubing consists of microscopic pores that allow certain molecules to pass through. Certain molecules will pass through the makeshift membrane if small enough. If they are too large, they will be confined inside the membrane. The first part of the lab focused on varied concentrations of Potassium

The Effect of a Solute in Osmosis through a Solanum Tuberosum Introduction: In this experiment, I will be studying if the type of a solute in water affects the rate of osmosis through the insides of a potato. I will be using three water solutions, one with salt and one with sugar, and plain water as a control group. Two of the solutions will have 250 milliliters of water with molarities of one for the two salt and sugar solutions. There will be two other solutions that will have 250 milliliters

between white potatoes and sweet potatoes, and if they affected osmotic potential, and cause the potatoes to differ in their isotonic point in sucrose solution. Osmosis is a form of diffusion in which water diffuses through a selectively permeable membrane from region where they are in a high concentration to a region where their concentration is lower. White potato tubers contain 79% water content and 17.9% carbohydrates, but only 1-3% of the carbohydrates is water-soluble sugars, while 15% is starch

AIM The aim of the experiment was to observe the effects the concentration as on the rate of osmosis. HYPOTHESIS The smaller the amount of concentration the quicker osmosis will occur. VARIABLE Independent variable: concentration of glucose Dependent variable: rate of osmosis CONTROLLED VARIABLES: 1. Time 2. Height of funnel 3. Amount of water 4. Height of glucose bag in the beaker APPARATUS 1. Thistle funnel 2. Distilled water 3. 500ml breaker 4. Retort stand 5. Clamp 6. Cellulose bag

Investigating the water potential of a potato Aim Osmosis is the movement of water molecules from a region of high water concentration to a low water concentration through a semi-permeable membrane. Our aim is to investigate the water potential of a potato through osmosis, by finding the difference in weight before and after the potato has been set in a solution of water, sugar or salt. Trial Method Firstly we collected the equipment. This included a scalpel, potato cutter, and test tubes. Then

Introduction: This experiment was used to examine the hypothesis that: Osmosis is dependent on the concentrations of the substances involved. Diffusion is the passage of solute molecules from an area of high concentration to an area of low concentration (Campbell & Reece, 2005). An example is ammonia diffusing throughout a room. A solute is one of two components in a chemical solution. The solute is the substance dissolved in the solution. The solvent, the other component, is any liquid in

soil will have a more concentrated water solution than inside the cell, thus leading to the water solution in the soil osmosing into the root-hair cell. The cell which is next to the root hair cell is separated by the partially permeable membrane. This leads to the more concentrated water solution in the root hair cell osmosing into the cell next to it. This procedure of osmosis through the cells carries on until the cells reach the xylem. The xylem finally carries the water

solution to osmosis in a potato cells by putting potato pieces in test tubes of water containing different concentrations of sucrose solution. Scientific Theory: Osmosis is defined as the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration. In a high concentration of water the amount of solute (e.g. sugar) is low. This could be called a weak or dilute solution. In a low concentration of water the amount