This website uses cookies to ensure you have the best experience. Learn more

Investigating How Surface Area Affects Rates Of Reaction.

782 words - 3 pages

Investigating how surface area affects rates of reaction.Background Info:Enzymes are biological catalysts. They break down the chemical they are uniquely made for, such as proteins, fats and some harmful substances like Hydrogen Peroxide.An enzyme basically works on a key and lock like system. The enzyme is unique to its self but many others may be close to the exact shape, but not quite. Therefore allowing substrates to fit into its activesite, which then breaks it gets broken down. As all enzymes are different some substrates will have to work harder to fit into the active site of another enzyme of a similar shape, as some will fit perfectly, they all have different shape activesites to deal with each of its designated chemicals.The best conditions for enzymes to breakdown and live is around 37-40°c /body temperature; in a low pH level are if would work best.If the conditions are not suitable then the enzyme will denature, which is when it changes shape, then the substrates wont fit easily. If the enzyme is to hot it will basically melt slightly and change, but if its too cold then it wont have enough energy to digest.This will digest slowing as the substrates are not a good fit forThe active site.Where as.This fits perfectly so it will digest this fast and well.When it's a perfect fit the two substrates join together and you get a product.These processes have an equation.Hydrogen Peroxide Hydrogen + Oxygen2H2O2 2H2O+O2How the surface area can affect reaction time.This half potato only has one side being digested and because it's a small area it will take longer to get through and the amount on enzymes they could have working on it cant as there isn't enough space.This potato has been chopped up into 9 small square pieces this has increased the surface area dramatically. So more enzymes can digest it as there is more space and as each piece is smaller, they have to do less work so its done faster.Prediction:My prediction for the experiment is that the smaller and more pieces you cut the potato into the faster the reaction will be, because more enzymes can work on it as the surface area is increased and they are smaller pieces so it should digest faster.Equipment:Cork border - To get a continuous even sized potato discsStopwatch - To time how long you've been running each testPotato - To test with20 vol. Hydrogen Peroxide - To place potato discs in to record reactionBoiling tube - Place discs in while testingDelivery tube - Take the oxygen into the other water bathMeasuring cylinder - To measure how much oxygen was producedHot water bath...

Find Another Essay On Investigating how surface area affects rates of reaction.

To investigate the effect of surface area on the rate of reaction using the enzyme Catalase, found in potato, and the substrate Hydrogen Peroxide

541 words - 2 pages apparatus including filling glass cylinder with water and placing it upside down in water, measure width of potato borer and apply this to surface area formula2. Read the level the glass measuring cylinder shows3. Cut a piece of potato 4cm and calculate the surface area. (take care when using the scalpel)4. Put the chip in the first conical flask5. Measure 20ml of hydrogen peroxide into the syringe. Care must be taken when handling the hydrogen

rates of reaction Essay

3996 words - 16 pages Investigation Rates of Reaction InvestigationAim: To investigate the effect of concentration on the rate of reaction between hydrochloric acid, water and magnesium. I am investigating the following reaction: Mg + 2HCl MgCl2 + H2 Magnesium + Hydrochloric Acid Magnesium Chloride + Water During this investigation we will be trying to find out how much affect different concentrations of hydrochloric acid has on the production of hydrogen (product

Rates Of Reaction Investigation

1543 words - 6 pages furthest recordings away from the line of best fit.The procedure we took was suitable for the results we wanted to obtain because it was quick, fair and quite accurate. Although, the results were very good, they were not perfect. Some of the reasons for this may be:* When the reaction takes place, bubbles of H2 are given off, which might stay on the Magnesium, therefore reducing the surface area of the Magnesium so the acid cannot react properly

Rates of reaction

2843 words - 11 pages An excellent project, very perceptive -BACKGROUND INFORMATIONWhat affects the rate of reaction?1) The surface area of the magnesium.2) The temperature of the reaction.3) Concentration of the hydrochloric acid.4) Presence of a catalyst.In the experiment we use hydrochloric acid which reacts with themagnesium to form magnesium chloride. The hydrogen ions givehydrochloric acid its acidic properties, so that all solutions ofhydrogen chloride and

Rates of Reaction

2549 words - 10 pages see through as more and more sulphur is formed. This is how I plan to measure the rate of the reaction. I will place a laminated cross underneath the solution and will stop the stop clock when the cross can no longer be seen. I aim to conduct a fair and safe investigation to determine what affects the rate of the reaction. Variables. ---------- Possible independent variables are temperature, amount of hydrochloric acid, concentration of

How Concentration and Temperature Affects the Rate of Reaction

804 words - 3 pages How Concentration and Temperature Affects the Rate of Reaction between Magnesium Ribbon and Hydrochloric Acid. WHAT I AM INVESTIGATING I am going to investigate how concentration and temperature affects the rate of reaction between magnesium ribbon and hydrochloric acid. MY PREDICTION The thing which I expect to happen is the more acid added to water the faster the reaction will happen. Also the hotter the solution the quicker

To study how concentration affects the rate of a reaction

1105 words - 4 pages .*Size of particles (surface area) - A few small fragments of a substance will have a larger surface area than one large piece because the fragments will have more area for the solution to work on.There are three ways you can measure the speed of a reaction.*Precipitation - This is when the product of the reaction is a precipitate which clouds the solution*Change in mass - If the reaction produces a gas, the experiment can be carried out on a mass

Rates of Reaction of the Halogenoalkanes

1616 words - 6 pages Rates of reaction of the halogenoalkanes scientific knowledge and understanding: Halogenoalkanes are classified as either primary, secondary or tertiary. In primary halogenoalkanes the halogen atom is covalently bonded to a carbon atom which is bonded to one other carbon, to two other carbons in secondary and three others in tertiary. Apparatus for a reflux Increasing the size of the halogen atom in the halogenoalkane decreases

Chemistry Report: Experiment on Rates of Reaction

3605 words - 14 pages surface area, the quicker the reaction. The smaller the surface area, the slower the rate. The more collisions there are between particles in a given surface area, the quicker the rate of reaction. I have explained what can change and affect the rates of reaction above. From this, I will be focusing more on the Concentration of acid and how it can change the rates of reaction. Prediction I predict marble powder will react faster than

Rates Of reaction- The reaction between limestone and hydrochloric acid

873 words - 3 pages :*Temperature of acid- this will determine how quickly the reaction happens e.g. the limestone reacts faster or slower under a certain temperature. When the acid is heated, the particles gain*Amount of Hydrochloric acid used*Amount of limestone used*Surface area of limestone- this will determine how quickly the reaction will happen e.g. If the limestone is cubed or powdered*Concentration of acid- this will determine whether the limestone dissolves faster or

How concentration of acid affects the rate of reaction with magnesium ribbon

1171 words - 5 pages PlanningIn this experiment I am going to find out how concentration of acid affects the rate of reaction with magnesium ribbon.Equation for this reaction:Mg + 2HCl --> MgCl2 + H2PredictionIn this experiment I think the higher the concentration of hydrochloric acid the faster the reaction.Scientific knowledgeThe highest concentration reacts faster as the solution is more concentrated which means that there will be more particles in the

Similar Essays

Investigating How The Concentration Of Reactants Affects The Rate Of Reaction

1897 words - 8 pages Investigating how the concentration of reactants affects the rate of reaction Chemistry Coursework This experiment is aimed at investigating how the concentration of reactants affects the rate of reaction: The reaction between hydrochloric acid and magnesium will be used to investigate how different concentrations of the acid affect the rate of reaction. The gas produced from the reaction will be measured and used to display the average rate

Investigating Reaction Rates Of Sodium Thiosulphate And Hydrochloric Acid

2235 words - 9 pages Investigating Reaction Rates of Sodium Thiosulphate and Hydrochloric Acid Aim: To investigate the rate of reaction of Sodium Thiosulphate and Hydrochloric acid. In this investigation I will be varying the concentration of Sodium Thiosulphate only and not the Hydrochloric acid concentration. In this investigation I will use the following word equation: Sodium Thiosulphate + Hydrochloric acid In this

To Investigate The Effect That Surface Area Has On The Rate Of Reaction

1130 words - 5 pages ) can bind. Enzymes are biological catalysts that speed up chemical reactions, without being used up or changed. Reactions can be completed at different rates. The rate of reaction is measured by observing how quickly reactants are used up or how quickly products are forming. The more finely divided the solid is, the faster the reaction happens.Hypothesis: The higher the surface area to volume ratio the higher the rate of reaction.Variables

To Investigate The Effect Of Surface Area On The Rate Of Reaction Using The Enzyme Catalase, Found In Potato, And The Substrate Hydrogen Peroxide

2672 words - 11 pages can also be said, that if I was to double the surface area, I would double the rate of reaction.However, there is a certain extent when there will be no further reaction. This is because a substrate molecule will occupy all the enzyme's active sites. Therefore, it will not matter how much you increase the surface area, there is not enough substrate molecules, to bind with the active site. This statement is only in theory.VARIABLESAs mentioned