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

The rate of reaction is how fast/the speed at which a chemical reaction takes place.

Extracts from this document...


SCIENCE COURSEWORK INTRODUCTION The rate of reaction is how fast/the speed at which a chemical reaction takes place. The rate of reaction is found by measuring the amount of a reactant used up per unit of time or the amount of a product produced per unit of time. The rate of reaction is at its fastest speed in the beginning of the reaction & gradually slows down. Some of the things that affect the rate of reaction are: * Concentration * Light * Surface area * Temperature * Using a catalyst * Pressure All these things can affect the rate of reaction because they can increase the chances of successful collisions that take place. A successful collision can only take place when particles collide with each other and a reaction takes place. In order for the Acid and Magnesium particles to react together they must collide with each other and the collision must have enough energy. HOW I AM GOING TO CARRY OUT MY INVESTIGATION In a chemical reaction, reactants change to products. ...read more.


will be too fast so I wouldn't be able to record the right reading, and I wont spread it over 15 seconds because it would be too long and will have a far too big of a gap in between each reading. For each different concentration of acid I will be repeating the experiments three times and then find the average of my result. Repeating the experiment will make the investigation fairer and more reliable. This is because if I have one bad result I can then level it out by finding the average of the three results, therefore my results will be more accurate. PREDICTION I predict that the higher the concentration of the acid the faster the reaction will be. I predicted this because the higher the concentration of the acid the higher number of particles in a given volume, and if there are more particles, there will be more collisions. More collisions means a larger number of successful reactions, so therefore the rate of reaction will increase. ...read more.


* Trough * Measuring cylinder The different concentrations of acid I will be using are: * 0.5Mcl * 1.0Mcl * 1.5Mcl * 2.0Mcl * 2.5Mcl After gathering my equipment I will set it up as shown below: After gathering and setting up my equipment I will then start my experiment by doing these steps: 1. Check the room temperature 2. Put my safety goggles on 3. Measure out 50ml of acid 4. Cut 5cm of magnesium 5. Put the 50ml of acid and the 5cm of magnesium in the flask and start timing 6. Record the results after every 10 seconds until the reaction has stopped EVALUATION I think my procedure was good because it gave me a set of results that proved my prediction was correct. I predicted that the higher the concentration of the acid the faster the reaction would be. CONCLUSION In my results table I can see a pattern; the stronger the acid the faster the rate of reaction is. Acid Time when reaction stopped (sec) 0.5MHCl 80 1.0MHCl 60 1.5MHCl 40 2.0MHCl 30 2.5MHCl 20 Fezaan Haroon ...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. Peer reviewed

    Rates of Reaction

    5 star(s)

    So less energy will be needed for the hydrochloric acid and the calcium carbonate to react. If a catalyst is not used then the rate of reaction stays the same - and so when a catalyst is used the rate of reaction is increased without reacting itself or being used up.

  2. chemistry rate of reaction

    Catalysts though are non-reactants. 3) Stirring - The effect of stirring increases the rate of reaction because it causes the particles to move quicker and so each collision between the particles becomes more violent. As the particles move around faster they gain more energy also which in turn helps to make the collision much more vigorous.


    15 minutes showed a substantial change and would allow me to complete at least three experiments in one lesson. Another important step in making this a preliminary test is to make sure that the potato is fully covered by the solution.

  2. Investigating the rate of a reaction

    * Measuring Cylinder - This will be used to measure the amount of hydrochloric aid, to ensure that we are conducting a fair test. * Digital Scales - This will be used to control the weight of the calcium carbonate chips.

  1. Free essay

    Close Your Eyes

    They can't stop smiling. There's barely a moment when there apart. She even sleeps at his sometimes. I wondered what happened at these overnight stays of hers but she said nothing apart from the occasional kiss. I think she's telling the truth because I'm pretty sure that if she'd gone further she wouldn't be able to keep it to herself.

  2. Rate of Reaction

    Then I will prepare different molars of hydrochloric acid to have a good spread of concentrations. The hydrochloric acid will be diluter so that there are many concentrations. 5) After this, I will measure (x)ml of hydrochloric acid and (y)ml of water to make a dilute molar.

  1. Rates of Reaction

    By this we mean that the particles move around much faster, and consequently the probability of the particles colliding with each other increases by massive and so does the rate of reaction. This is sometimes known as the kinetic theory.

  2. Rates of Reaction

    So the reason we would control this variable is to ensure that in all the experiments, the particles would have the same energy available for reaction, and that no experiments would have an advantage over another experiment. We controlled this variable by carrying out all the experiments in the same room and on the same day.

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