• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9
  10. 10
    10
  11. 11
    11

What factors affect the rate of decay of a limestone castle?

Extracts from this document...

Introduction

PLANNING Question What factors affect the rate of decay of a limestone castle? A local town has a castle. The castle is built from Limestone (Calcium Carbonate). The castle has started to crumble. Some people have blamed the new damage on acid rain and have stated that the damage has increased as pollution has increased. Others blame Global warming and claim that the level of acid in the rain has stayed the same. Choose ONE factor to investigate to find the reason for the decay of the castle. The reaction is: Calcium Carbonate + Nitric Acid --------> Calcium Nitrate + Water + Carbon Dioxide Intro * I decided to investigate the affect that acid rain would have on the limestone, which the castle is built of. * For this, I decided to do an experiment involving immersing limestone chips in different concentrations of acid. Hypothesis I think that the acid will dissolve the marble chips in the experiment that I am about to perform. As I change the independant variable, the rate at which the marble chips dissolve and how much they do in the given time will vary. ...read more.

Middle

Therefore, I will be performing the task 5 times to make one single "experiment", which there are three of in this investigation. The Experiments I will try and do my best to ensure as much accuracy as I possibly can throughout the components of experiments 1, 2 and 3. Repeating the experiments 3 times and comparing results ensures an accurate average, as does measuring and ensuring some variables exempt one are of the same value throughout. However, as much as I will try to do this, it is not possible for me to ensure complete and utter accuracy, and the measurements of fluids and marble chips from component to component are bound to vary mildly, which is out of my control as there is a limit to how accurate it is possible to be. OBTAINING EVIDENCE Results Tables I have drawn up some results tables, one for each of the experiments I have done, of which there are three of altogether. Within each of the three experiments are five components. EXPERIMENT 1 Component Water(cm3) Acid(cm3) Height of jar(cm) Water decreased in jar - level of CO2(cm) C.1 40 0 23 1.5 C.2 30 10 " " 2.8 C.3 20 20 " " 4.0 C.4 10 30 " " 5.0 C.5 0 40 " " 6.0 Difference(cm) ...read more.

Conclusion

Therefore, the level of water was lower to start with, which may have contributed to the amount of cm's that the water had dropped due to CO2 gas. They may also be linked to slipped standards of accuracy in my experiments, but I was almost fully sure that I performed them with my best precision. I think that to improve the standards of the experiment and to increase the accuracy, each procedure of the experiment should be followed extremely carefully. The variables that should not be changed should be kept entirely equal, such as the timing of the reaction, the weight of the marble chips, the water in the gas jar and the amount of solution. The glass slide used to keep the water in the gas jar when tipped upside down should be released carefully, and only when the gas jar reaches the beehive in the trough should it be released. To extend my investigation on the decay of the limestone castle, I could repeat the experiment many times over to achieve an even more accurate average. I could also investigate global warming harming the limestone castle, and compare the two types of experiments to see which one would be most detrimental to the limestone castle. ...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 Aqueous Chemistry 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 Aqueous Chemistry essays

  1. Find out how the concentration of nitric acid affects the rate of reaction between ...

    I will also need to control the surface area of the marble chips because if the surface area is increased, the particles have a larger area on which to collide and break bonds. Method: * Weigh out 1g of large marble chips, of similar dimensions.

  2. To investigate three factors that affect the rate of cooling a liquid and to ...

    Equipment In this experiment I will use 3 glass beakers of capacity 200ml, 150ml of water, a Bunsen burner, a heatproof mat, a tripod, a thermometer that can measure between 0?C and 100?C, woollen lagging, corrugated cardboard and a stop clock.

  1. To investigate the factors affecting the volume of carbon dioxide produced when a carbonate ...

    bowl and the delivery tube was placed so that it was inside the measuring cylinder. o 25cm3 of HCl was the poured into the Buckner flask (As close to as possible, because we know that this doesn't matter as it is in excess from the excess equation).

  2. The factors affecting the volume of Carbon Dioxide gas produced when a carbonate reacts ...

    Results For each result that I did I had three results and then took an average. I then plotted two graphs. One of the graphs was for an average volume against mass and the other was for all the volumes against the mass.

  1. How much Iron (II) in 100 grams of Spinach Oleracea?

    By redoing the experiment I had results that I could compare to future experiments. I created a second spinach extract solution using 20 grams of Spinach Oleracea. This was done so that I could compare my results from the two solutions and thus be able to detect whether one of the solutions had been contaminated.

  2. An investigation of the factors which affect the reaction of acid rain on limestone.

    Therefore they all collide more. 3. I believe that the molecules of the reactants would work more effectively and collide more, if the temperature was higher, meaning they would react more. I predict this because the higher the temperature, the more kinetic energy the molecules have.

  1. An Investigation of the weathering of limestone.

    results as we are going to put our results together with another groups who are using the exactly same experiment as us so we will all be able to keep to a fair test. Then with four sets of results we will be able to get a high-quality average, excluding anomalous results.

  2. A Investigation into the Rate of Chemical Weathering of Marble

    Acid: 30ml Acid: 20ml Acid: 10ml Acid: 0ml 10 36 20 11 0 20 48 28 15 0 30 60 38 20 0 40 73 49 26 0 50 82 60 33 0 60 97 70 37 1 The main drawback of my preliminary experiment was that I only timed

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