Michelle Yeung Bio 101 Cyrus MacFoy June 16‚2015 Diffusion and Osmosis Exercise I. Molecules are always in constant movement. Molecular motion is a form of energy‚ the kinetic energy of molecules. The Brownian movement is the movement of small particles caused by the bombardment of the particles by millions of water molecule. This movement will continue indefinitely as long as there is water. My prediction for this lab is the solution of the water is hypertonic meaning there is a higher concentration
Premium Chemistry Osmosis Diffusion
The aim of the sixteenth of November experiments was to observe how three different solutions with various sucrose concentration influenced osmosis in relation to three onion cells and the impact on the cells structure. A small square of a red onion skin (membrane) was observed under a microscope at high power (X40) magnification. The observation showed a large number of onion cells. The structure of one onion cell had a general rectangular shape with a developed cell wall‚ which gives the rectangular
Premium Osmosis Cell Concentration
Formal Scientific Lab Report Osmosis Katy Hunter 10-26-2012 Abstract: The objectives of this lab was to be able to create models of cells with the dialysis tubing to show us how the plasma membrane is selectively permeable‚ to study the effects of osmosis on a model cell‚ and to foresee the effect of solute concentration on osmosis. In order to achieve these objectives‚ we had to fill the dialysis tubing with either water‚ or different amounts of sucrose. We then tied off the tubes and put
Premium Diffusion Osmosis Semipermeable membrane
Securing long hair in a ponytail. Materials: Marshmallows. Tortilla chips. Potato chips. Barbeque lighter. Thermometer. Stirring rod. Ring stand. Data: Food Weight Before Burning Food Weight After Burning Tortilla chip‚ 3.2g Tortilla Chip‚ 1.15g Marsh Mallows‚ 8.4g Marsh Mallows‚ 6.1g Potato Chips‚ 7.7g Potato Chips‚ 1.5g Water Temp. Before Burning Water used for tortilla chips‚ 25
Premium Temperature Fahrenheit Potato
happened because the lower the concentration of sugar the greater its water potential and consequently the faster the rate of osmosis. The results show that in each of the five sugar solutions‚ the rate of osmosis decreased with time. This happened because the difference in water potential between the inside and the outside of the beetroot time decreased as the experiment proceeded. Osmosis occurred most in distilled water because this contained the highest water potential when compared with the other
Premium Concentration Purple Chemistry
Western Oregon is a region that is threatened by landslides that can cause hazards to the public’s safety‚ their natural resources‚ and infrastructure. The most hazardous areas are in the mountain terrains. Landslides are a common occurrence in Western Oregon. They can be very devastating to homes and businesses and each year millions of dollars are spent repairing the damage caused by landslides (Hofmeister‚ 2002). Landslides are not individual events‚ they occur in conjunction with other factors
Premium Oregon Hazard United States Senate
forward and reverse reactions occur at equal rates so that the concentration of the reactants and products does not change with time. Before this experiment‚ we were educated on how osmosis functions. Osmosis is a process which molecules and water take to usually get through a selectively permeable membrane in order to reach equilibrium. It is a passive transport which requires no ATF and water moves from high to low water concentration. When osmosis is completed‚ there should be an equal concentration
Premium Osmosis Concentration Cell wall
1. Diffusion and Osmosis‚ June 4‚ 2013 2. Purpose: The purpose of this lab is to help give visual understanding of diffusion which is a solution of high concentration spontaneously (no energy required) moving to an area of low concentration. Also taking a look at osmosis‚ which is the movement of chemicals across the cell membrane. Osmosis requires some type of energy to be put in for this to happen. After these experiments we should have a better idea and visualization of how chemicals transfer
Premium Starch Carbohydrate Concentration
As I’m sitting there‚ watching a hot potato – a literal hot potato‚ fly towards me‚ I’m wondering what I got myself into. Rewind a couple of days and I’m in school talking to the new girl named Jocelyn. She wore converse and had these cool long side bangs that everyone in the eighth grade was jealous of and had come from some far off place called Falls City. As the new kid with the cool hair‚ everyone was competing to lure her into their posses’. I‚ a typically quiet‚ reserved person‚ tended to stick
Premium English-language films High school 2007 singles
OSMOSIS ASSESSMENT TASK Introduction Osmosis is the net movement of water particles from an area where they are in high concentration to an area of low concentration‚ down a concentration gradient. Hypothesis: Will a high concentration of salt solution affect the mass of a potato chip? Variables Controlled variables: -The sizes of the potato chips. Bigger size of potato chips will weigh heavier and the smaller potato chips will weigh lighter‚ if we don’t use the same size of potato chips
Premium