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

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Introduction

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.

Middle

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.

Conclusion

* 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.

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