• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

How does the temperature of catalyse affect the rate of which it reacts with hydrogen peroxide?

Extracts from this document...


How does the temperature of catalyse affect the rate of which it reacts with hydrogen peroxide? Aim The ain of this investigation is to find out how the temperature of the enzyme catalyse affects the rate that it reacts with hydrogen peroxide Prediction I predict that the higher the temperature of the catalyse, the quicker the reaction with hydrogen peroxide but when the temperature of the enzyme excides about 40 C will start to decrease. I think this because of my knowledge about enzymes. I know that enzymes are found in all living things. I have found out when doing previous experiments with enzymes that the optimum temperature for a reaction involving enzymes is about 40 C after about 40 C the bonds in the enzyme begin to brake or denature this makes the enzyme loose its shape and stop working so the reaction rate will decrease and eventually the reaction will stop. Equipment list To carry out the following investigation I will need: o Safety goggles o Clamp and stand o A boiling tube o Measuring cylinders o Delivery tube o Water bath o Bowl of water o Hydrogen ...read more.


Attach the dilivery tube and place end of the dilivery tube under the und of a measuring cylinder, which is filled with water and upside down in a bowl of water. o Start stop watch and time for 1 minute o At the end of 1 minute records the amount of gas given off o Repeat this experiment for 10 C 20 C 30 C and 50 C o Repeat the entire investigation at lease 1 more time so that I can get an average y doing this I reduce my margin of error Diagram Preliminary work From preliminary work that I have carried out I have found out that I will have 2 use 20 cm3 of both hydrogen peroxide and yeast to get a measurable amount of gas and also changing the amount of time I let the reaction go on for before taking the results I will reduce to 1 minute. Results Temperature ( C) Gas given off in 1 minute Experiment 1 Gas given off in 1 minute Experiment 2 Gas given off in 1 minute Average of experiments 1 and 2 10 C 2.1 1.9 2.0 ...read more.


Evaluation I am pleased with what I achieved in the investigation. I believe that my experiment was as accurate as I could make it as it was quite difficult to make sure that the temperature of the enzyme was exactly the temperature need as the water baths would cool down quite quickly and I would have 2 top it up with warmer water which changes the temperature of the enzyme by a few degrease. Another problem I found was with the upside down measuring cylinders to measure off the amount of gas given off, as sometimes I would get small air bubbles before I started the experiment so this affected my results very slightly. So if I did this experiment again I would probably use a gas syringe, as this would give me a more accurate reading. But I don't think these problems had a major impact on the quality of my results because the amount of error was minimal. Further work that I could do to is to investigate the how Ph effects the rate of reaction of catalyze and hydrogen peroxide. Claire Bartlett (set 1) ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Patterns of Behaviour essays

  1. How temperature affects the rate at which bread dough rises and find out the ...

    They are biological catalyst and at the optimum temperature they work the most and with the maximum energy resulting in the highest numbers of collisions. Above this temperature they get denatured. Enzymes have got an active site in which the molecule of substrate fits and the product is formed.

  2. How Does the Changing Temperature Affect the Rate of Fermentation by Yeast.

    Use a stop clock to time 5 minutes. 13. At 5 minutes look at the measuring cylinder to note the volume of gas collected in the measuring cylinder. 14. Repeat with water at other temperatures. 15. Repeat each experiment 3 times. Diagram: See attached sheet. Summary: The variable that I will change in my investigation is the temperature at which the fermentation is taking place.

  1. To investigate the effect of varying the masses of white sugar and yeast and ...

    The most apparent physical change marking the course of fermentation in a dough is the steady increase in the volume of the dough mass. The sponge expands to four to five times its original volume before it recedes, assuming at the same time a light, spongy character.

  2. An investigation to see the difference in the rate of reaction when catalyse is ...

    So if it was cold then the molecules would move about slower and if very cold then they will barely move at all. This makes it more difficult for the catalase to break down the substrate molecule at a fast rate.

  1. To investigate how temperature affects the rate of the reaction with catalyse and hydrogen ...

    Results Test 1 (cm�) Test 2 (cm�) Test 3 (cm�) Average (cm�) 10�C 8 7 3 6 20�C 47 52 42 47 30�C 21 22 20 21 40�C 16 18 15 17 50�C 8 9 7 8 60�C 0 10 1 4 Conclusion The fastest rate of reaction occurred at 20�C.

  2. Investigate the action of the Enzyme Catalyse

    The reason a reaction usually happens faster is because if there is a higher concentration it means there are more parts (molecules) to collide and react within the same amount of ml. E.g. In the concentration of 10 vol. there are 100 active molecules that are going to react but in the concentration 5 vol.

  1. Investigating the factors that affect the rate of hydrogen peroxide.

    Once the chemical bonds are broken, the complex is no longer able to fit in the active site, and breaks up. The enzyme is free to take part in the next reaction. Possible variables & Fair test Below are the possible variables in the investigation, how they will affect the

  2. Investigating the factors affecting the breakdown of hydrogen peroxide by the enzyme catalyse.

    It is also used as a source of oxygen in the fuel mixture for many rockets and torpedoes. As a reducing agent it reacts only with such easily reduced chemicals as silver oxide and potassium manganate Catalyst, a substance that alters the rate of a chemical reaction without itself undergoing any chemical change.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work