An Experiment To Investigate The Relationship Between Surface Area and Rate Of Reaction Introduction The rate of reaction (reaction velocity) may be defined as the rate of change of concentration of a stated reactant or product. The rate of a reaction is found by measuring the amount of a reactant used up per unit of time or the amount of a product produced per unit of time. A reaction can be made to go faster or slower by changing a number of factors. In order for a reaction to occur certain things
Investigation to Determine the Relationship Between Surface Area and Rate of Oxygen Production To determine the relationship between surface area and rate of oxygen production when a potato is placed in hydrogen peroxide (H2O2) solution. Background Information ---------------------- Potato contains enzymes such as catalase. Catalase are protein molecules, which are found in animal and plant cells. Catalase speeds up specific reactions in the cells. They all have very specific duty
The Effect of Surface Area on the Rate of Reaction Between Catalase from a Potato and Hydrogen Peroxide Aim To find out the relationship between the surface area of a potato chip and the rate of reaction when hydrogen peroxide is put in with it. Variables As I do this experiment the thing I am going to be changing is the surface area of the potato chip, first I will put it in the beaker as a whole (3cm chip) then I will start cutting it into smaller pieces and repeating the experiment
Demonstrating How Surface Area and Volume Affect Heat Loss in Animals Planning ======== Aim: To investigate how surface area and volume of an animal affects the amount of heat lost. Planning a simple procedure =========================== One standard test tube, one boiling test tube, and one centrifuge test tube will be filled with water at 40°C. A thermometer will be placed in each tube to measure the decrease in temperature of the water. This will be timed for 300 seconds
The surface area to volume ratio is a fundamental of biology. Its affects a variety of things, from the maximum size of a cell, to the shape of an organism, to how internal transport systems are arranged. The surface of a cell (membrane) is the site of exchange between its interior and external environment. This surface has to allow enough exchange to support what is inside of the cell. It is vital to know that as an object increases its volume increases. Therefore the surface area to volume ratio
these consist of: * The surface area of the beetroot cylinder * The volume of the beetroot cylinder * The temperate the experiment is done at * The time the beetroot cylinders are left in the water * Amount of water used * Age and condition of beetroot used The independent variable that I will be changing is ‘the temperature the experiment is done at’. Therefore all other variables must be kept constant. I will do this thusly: The surface area of the beetroot cylinder :
method called the lock and key theory: The Collision Theory - this is when reacting molecules collide with each other with enough energy to react. Surface area, temperature, concentration and the use of an enzyme affect the collision theory. All of these factors increase the rate of reaction if you increase them. If there is a larger surface area then the molecules are exposed and are more available to react as there are more of them. This means there will be more collisions so a faster reaction
This means that they move faster which in turn means that they collide more often and with more energy. · The surface area of calcium carbonate used in the experiment. Hydrochloric acid particles can collide only with calcium carbonate particles on the surface of the marble chip. Therefore, if the marble chip is crushed into a powder, there will be a larger surface area and therefore more collisions. I have chosen the concentration of hydrochloric acid as the variable that I will
well as the collision theory there are also other factors that will effect how quickly and effectively the reactions take place. The four factors that effect the rate of a chemical reaction are: TEMPERATURE, CONCENTRATION OF ACID, SURFACE AREA OF THE REACTANT and USE OF A CATALYST. Temperature ----------- The higher the temperature of the solution, the faster the rate of reaction, and vice versa. This is because as the solution heats up the particles gain energy and begin
investigation I am trying to find out what influences the reaction rate between limestone and hydrochloric acid. The reaction is: The factors that can be investigated are the concentration of the hydrochloric acid, the temperature, and making the surface area of the limestone bigger. Limestone is formed from fossil remains of shells and is a sedimentary rock, which contains almost 100% calcium carbonate (CaCO ). When it is heated it decomposes and produces quicklime (CaO) and carbon dioxide.
Chemistry For You by Laurie Ryan, it states "As you increase the concentration of the acid, there are more acid particles in the same volume. Therefore there is a greater chance of acid particles colliding, and reacting with more particles on the surface of the marble." So, this means that the higher the concentration of my acid the faster the reaction. Method I will weigh out one gram of marble chips using a balance and put it in a conical flask and add to it a concentration of 50cm3 using
detail. Scientific knowledge: Marble chips erode when they are exposed to acid rain or pollution. Erosion is evident when you look at older marble buildings as in certain cases the erosion take a long time. It is more likely to occur in areas, where there is more pollution. This is because there are a greater number of industries in city than in the countryside. Especially the higher amount of cars which release carbon dioxide, formed as a waste gas in reactions such as internal combustion
Box: Prediction I predict that as I increase the amount of chips the rate of reaction will increase because as the nuber of chips increases so does the surface area. Collision theory tells us that if the surface area of one of the reactants is increased then the reaction will speed up. This is because the acid particles have greater surface area to react with. This in turn means more carbon dioxide is produced. Preliminary Results ------------------- Before I decided on a method I carried
Investigate the effect of changing the concentration of hydrochloric acid and the volume of carbon dioxide produced by a reaction between hydrochloric acid and marble chips (calcium carbonate). Chemistry Coursework To investigate the effect of changing the concentration of hydrochloric acid and the volume of carbon dioxide produced by a reaction between hydrochloric acid and marble chips (calcium carbonate) Planning experimental procedures Aim In this coursework I will be investigating
Introduction Safety standards for all laboratories should be designed to eliminate risks due the use of potentially dangerous materials. All laboratories contain some form of potential hazards, and the actions and attitudes of those working within the laboratory are who sets precedence of their safety and others surrounding them. Their actions can also effect not only the laboratory but the community that surrounds the location. The manual identifies the biological agents that are used within the
Osmosis In Potatoes Is Affected By Solution Concentration Aim To investigate how the concentration of a salt and water solution affects the rate of osmosis in a potato. Osmosis Osmosis is the passage of water from an area of high water concentration to an area of lower water concentration, through a partially permeable membrane (a membrane which allows small molecules like oxygen, carbon dioxide, water, ammonia, glucose etc to pass through, but does not allow larger molecules such
How does surface area to volume ratio affect the rate of diffusion? As the gelatin cube sizes were cut into smaller pieces, the surface area to volume ratio increases. Surface area to volume ration is very important in living organisms, since all the nutrients and oxygen need to diffuse through the cell membrane into the cells. The surface area to volume ratio affects the rate in which the salt diffused through the solution by how the salt diffused out of the gelatin and into the water this relates
Surface Area's Effect on the Way Enzymes Work Introduction I am doing an investigation to see how the amount of surface area affects how a enzyme, Catalase works. Catalase is a biological catalyst which means that is speeds up a reaction itself. I am going to see how much foam is created after 5 minutes, this should show us whether the amount of surface gives a better or worse reaction. My input variable will be the surface area. The potato which contains the Catalase will be cut into
rate across four different surfaces. The surfaces were wax paper, paper towel, fine sandpaper, and coarse sandpaper. We had to pull the block across each of these surfaces to determine how much force we need to defeat friction. When I pulled the block over the wax paper, it moved with a small amount of force. Paper towel was also in the low range of force. However, with the fine and coarse sandpaper, much more force was required to move the block along. Therefore, the surface that had the lowest amount
of light intensity on the size of a plantain leaf. Hypothesis: I predict that the size of the plantain leaves would increase as the light intensity decreases. Therefore, plantain leaves found in the shade will have larger surface areas than leaves found in an open area. Theory: Sunlight is an essential factor need to complete the process of photosynthesis. Photosynthesis consists of the following equation: Sun light Carbon dioxide + Water ========> Glucose + Oxygen Chlorophyll