Decomposing hydrogen peroxide with a solid catalyst or soluble transition metal compound. The factors to discuss might be I am going to draw a graph analyse by results properly. Some of the work done here in presenting the results, e. The range of my results were also suitable to make good observations and conclusions By comparing the repeated times on each of the experiments I can see that they were similar and each one was within two seconds of each repeat.
Is there any other factor for the reaction you are studying? There were no points on my scatter graph that were not on or close to the line of best fit.
Enzyme catalysed reactions e. Maybe using a better timer to record my results would have granted me more accurate results.
As the temperature increases the rate of reaction increases too, due to more collisions and more successful collisions, caused by the increase in temperature.
This would make my investigation more of a fair test because during my experiment I used a stronger concentration of the STS solution and so it would have been better if I used the stronger HCL solution.
Results Below is a table showing my results from the main investigation I can see from observing the table that the first part of my prediction was correct. In this experiment I knew when the solution was completely cloudy was until the black cross underneath the flask had disappeared to my sight.
Explain why best data at the start? All my experiments went very well as there was not any mistakes made. Then, they will all be at the same temperature, which should be recorded.
I can also improve my experiment by using a turbidity sensor which judges how cloudy things are. Even with a thermostated water bath normally only available to advanced level studentsall the reactant solutions should be pre-warmed in the bath before mixing and start the timing and recoding of results.
Once I decided the concentration I then carried out my experiment. Evaluation In conclusion I think my experiment was very successful. Evaluating - and how good are your results then?
In order for me to carry out my experiments I would need to follow the following procedures:The effect of concentration is demonstrated using an iodine clock reaction. The effect of temperature is demonstrated using a glowstick. choose your GCSE subjects and see content that's.
Jul 02, · A grade GCSE chemistry coursework, Rates of reaction, Decomposition of sodium thiosulphate, introduction, method, safety, results, discussion. Sodium thiosulphate decomposition for GCSE, grade a mi-centre.coms: Rates of reactions science (chemistry) coursework My coursework is based on rates of reaction.
This deals with the time taken for 1. draw an x on a piece of paper and pour ml of sodium thiosulphate and hydrochloric acid in different beakers. A BRAINSTORM on "Rates of Reaction" for chemistry coursework investigations-projects. Ideas for coursework assignments or projects involving the rates or speed of chemical reactions and is a companion page to see also the DETAILED GCSE Revision Notes on the Factors Affecting the Rates of Chemicals which also has brief descriptions of experimental methods and equations, particle pictures.
Rates of Reaction Coursework.
Introduction. Reaction rates are explained by the collision theory. The collision theory is explained by the rate of reaction. [tags: GCSE Chemistry Coursework Investigation] Research Papers words Evaluation.
My evidence is extremely reliable, I. Investigating the rate of a reaction 1. Preliminary work Analysis and Evaluation This must be an individual activity. As with planning, enabling comments/questions are allowed, but do GCSE Chemistry Coursework: Investigating the rate of a reaction Your task is to plan, and carry out, an experiment to discover how to change the rate the.Download