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

I think that as the surface area of a piece of potato is increased, the number of bubbles released will increase due to the higher rate of reaction creating more gas.

Extracts from this document...

Introduction

Enzymes Prediction I think that as the surface area of a piece of potato is increased, the number of bubbles released will increase due to the higher rate of reaction creating more gas. Scientific information For the experiment we were performing there was 3 possible methods which could have been used. Inverted Measuring Cylinder Advantages : A very accurate volume of how much gas has been released can be measured. Disadvantages : It is very hard for a cylinder to be placed like this with the amount of water required in it. Gas syringe This is the best method available. Advantages : Accurate volume can also be recorded, there is a frictionless movement of the plunger meaning no resistance is added to the amount of gas needed to move the plunger. ...read more.

Middle

is a main factor of our experiment. I will now explain how it will have an effect on the experiment. A solid in a solution can only react when particles collide with the surface, the bigger the area of the solid surface, the more particles can collide with it per second, and the faster the reaction rate is. You can increase the surface area of a solid by breaking it up into smaller pieces. A fine powder has the largest surface area and will have the fastest reaction rate. Through this simple diagram you can see that as we decrease the size of each block we increase the surface area. Apparatus Scalpel knife, plugs of potato, stop clock, goggles, white tile, ruler, conical flask, delivery tube, hydrogen peroxide, beaker of water, measuring cylinder, tube rack, boiling tube. ...read more.

Conclusion

The theory studied helps us understand about how the rate of reaction has increased this is very obvious in the results obtained as there is a diagonal line pointing upwards showing an increase in the size. Evaluation The method we followed was a simple method which enabled us to follow closely and obtain some accurate results from the experiment. The very last result had to be obtained from another test as we ran out of time so had to borrow some one else's results. We don't have too many anomalies but the ones we do have may have been caused by swapping to a new potato as it is a natural source and we can not choose how many enzymes it contains. The procedure used was suitable for us but it could have been improved by organising the time available for us to do the experiment. The evidence we obtained is quite reliable and is sufficient to support the conclusion put forward. ...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. Change in reaction times due to alcohol consumption.

    However, environmental factors (drinking habits) and genetic factors (activities of the enzymes involved) may affect the rate of alcohol metabolism. Specific groups, like about 30-50% of Asians, have an inactive acetaldehyde dehydrogenises enzyme, which results in higher acetaldehyde levels in the blood upon alcohol consumption.

  2. Record the effect that the enzyme catalase found inside the potato has, when added ...

    will be an increase in the amount of oxygen given off in the reaction. This is because of the link between the number of catalase molecules available to react with the hydrogen peroxide - the more catalase to react with hydrogen peroxide, the more oxygen emitted.

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