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

There are certain factors that affect the rate of reaction the four main factors are:

Extracts from this document...

Introduction

Rate of Reaction A rate of reaction is how slow or how fast a reaction takes place "the speed of the reaction" e.g. a slow reaction like rusting an explosion is a fast reaction. ...read more.

Middle

The increased speed results in a higher frequency of a collision between the reactant molecules and the rate increases. Heated molecules have a greater average kinetic energy, and so at higher temperatures, a greater proportion of them have the required activation energy to react Concentration: If the concentration of ...read more.

Conclusion

Gas/Gas or Liquid/Liquid then its is easy for the particles to mix with each other, giving them a greater opportunity to collide. If the reactant is a solid the reaction can only take place on the surface of the solid. Catalyst A catalyst is a substance that alters the rate of a chemical reaction without being used up or changed. ...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

Here's what a star student thought of this essay

3 star(s)

Response to the question

Very brief and correct at the very basic level. Quite useful for revision just before the exam or to remember facts quickly. The author does not go further and deep into the effect that each factor plays in the rate ...

Read full review

Response to the question

Very brief and correct at the very basic level. Quite useful for revision just before the exam or to remember facts quickly. The author does not go further and deep into the effect that each factor plays in the rate of a chemical reaction. The essay provides nothing extra from information that can be obtained by all school books, maybe even less in some parts.

Level of analysis

The level of analysis is completely basic, yet useful for revision purposes. At the understanding level, this essay is quite weak as it does not provide any sort of evidence or reason for the effect played by each factor. There are many different ways to provide a greater surface area for a reaction to take place. e.g. grinding the solid reactants. Just a definition of a catalyst is not enough to explain its role in a reaction. A catalyst basically lowers the activation energy of a reaction by weakening the bonds of the reactants, therefore less energy is needed to break those bonds. This is called the activation complex so a greater portion of the reactants have enough activation complex.

Quality of writing

There are not many writing errors in the essay except a few mistyping. The technical language level is acceptable but not very strong. When explaining rate of reaction, the term "Successful collisions" must be used to imply that not all collisions result in a reaction taking place. In general the quality of writing is just fine.


Did you find this review helpful? Join our team of reviewers and help other students learn

Reviewed by alireza.parpaei 26/06/2012

Read less
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. Marked by a teacher

    Rate of Reaction Chemistry Coursework

    4 star(s)

    Collect the jar and delivery tube and stick one end of the delivery tube up the end of the burette, this has to be done quickly- We do this as this is where the gas from the reaction goes up and it goes through the delivery tube and will

  2. Marked by a teacher

    Rates of Reaction

    3 star(s)

    Tie the rubber tube to the tip of the syringe with a rubber band. 7. Now that we are all prepared, we can start our experiment. Get a conical flask and add the 2g of CaCO3 powder into the flask, every bit of it.

  1. Peer reviewed

    Rates of Reaction

    5 star(s)

    and reactivity. There are several types of steric effects: Steric hindrance or steric resistance occurs when the size of groups within a molecule prevents chemical reactions that are observed in related smaller molecules. Although steric hindrance is sometimes a problem, it can also be a very useful tool, and is

  2. Rates of Reaction - The Iodine Clock

    was possible to store the Peroxide, water and the starch in one vessel and the Potassium Iodide, Thiosulphate and Sulphuric Acid in another. Pouring into a large conical flask can then quickly mix the contents of the two containers. The stopwatch should be started simultaneously.

  1. RATE OF REACTION

    The greater the difference in free water molecules between two areas, the faster water will pass across the membrane from an area where there is more water to an area where there is less. The time that the potato samples are left in the distilled water for; If some samples

  2. Investigating the rate of a reaction

    Additionally to control variables such as the amount of calcium carbonate I will be using a weighing scale and a scalpel to measure 2 grams of marble. I will also use a ruler to measure the rough size of the chip, keeping it the same to ensure a reliable test.

  1. Rates of Reaction- Hydrolysis of Urea by Urease

    In order to make a solution more acidic hydrochloric acid HCl is used as it contains H+ ions and to make a solution more basic sodium hydroxide NaOH is used as it contains OH� ions. To achieve a neutral pH7, equal amounts of HCl and NaOH are combined, or distilled water can be utilised.

  2. Rate of Reaction

    So I will be using this method. Concentration: The lower the concentration the slower the rate of reaction. This is because the higher the concentration the more hydrochloric acid molecules are present meaning the chances of collision are higher. Method In the reactions I used 3cm strips of magnesium and 50ml of diluted hydrochloric acid.

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