• 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

Investigate which fuels contain the most energy between; firelighter, wood, ethanol, paraffin and wax.

Extracts from this document...

Introduction

Contents 1. Aim 2. Prediction 3. Apparatus 4. Method 5. Results - Preliminary test 6. Conclusion 7. Results for Ethanol and Firelighter 8. Conclusion 9. Evaluation 10. Sources Aim: I am going to investigate which fuels contain the most energy between; firelighter, wood, ethanol, paraffin and wax. Prediction: I think that the fuel that contains the most energy is the one that produces the highest rise in temperature of the water. I know this because... Heat + fuel + oxygen => CO2 + H20 + energy. And because of the fire triangle: Apparatus: List: Stop watch Thermometer Splint Clamp Matches Boiling tube Heat proof mat Fuels: Firelighter, Wood, Ethanol, Paraffin, Wax. Method (Preliminary test): first of all, I will make sure I take all of the safety precautions, I.e. tie back long hair, use goggles and make sure the room is well ventilated. Secondly I will set out the apparatus and get all the equipment from the list (shown on the previous page). Using the measuring cylinder, I will put 20cm3 of distilled water into a boiling tube, and take the starting temperature. In order to make this a fair test I will burn the fuel for one minute only, use 20cm3 of water and make sure the tip of the fuel's flame is under the boiling tube. ...read more.

Middle

I have tested those two against each other three times, found the average of each time and have come up with the following results. Results for ethanol and firelighter: Table of results for ethanol: TEMP (�C) TIME IN SECONDS First time Second time Third time Average time 30 25 23 14 21 40 64 63 56 61 50 83 102 86 90 60 154 129 108 130 70 184 157 131 157 80 226 183 161 123 90 275 211 179 222 100 395 229 203 276 Table of results for fire lighter: TEMP (�C) TIME IN SECONDS First time Second time Third time Average time 30 23 26 18 22 40 131 106 59 99 50 202 202 116 173 60 215 301 130 215 70 238 337 141 239 80 306 409 150 288 90 356 430 157 314 100 446 455 209 370 Conclusion: To conclude; I think that ignoring the result taken under 80�C, ethanol is more of a steady line of best fit, but did not double with a set amount of time therefore also did not increase 10�C every 10 seconds so it was not directly proportional. whereas firelighter has more of a curve of best fit, which after reaching 70�C increases to a steeper line of best fit. ...read more.

Conclusion

transferred to the water. I got this equation, from information in a science book saying it requires 4200J to heat up 1 kg of water by 1�C so then to change that to ml as my investigation was in ml I know that 1 kg = 1L of water which =1000 ml, so then 4200/1000 = 4.2, Then x 20, as that's how many millilitres I used for my experiment, which = 84 then to get the (J) I do 84 x the amount of degrees the water had risen to = the amount of energy transferred to it in (J)! Another way to improve the accuracy of the experiment would be to improve the fact that unspecified amounts of fuel where used, as we did not weigh the fuel therefore it was not a completely fair experiment. For instance it can be safely assumed that if we used twice as much ethanol, we would get a flame twice as big. So the water would reach 100�C much quicker and probably in half the time. Although you will need to do a separate experiment to prove this assumption. If this experiment is repeated, I recommend that the same amount of each fuel is used and the experiment continues until all the fuel runs out. To make the experiment even more fair all the fuels should be at the same temperature at the start. Sources: Letts, GCSE Science. ...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 Organic 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 Organic Chemistry essays

  1. Peer reviewed

    Burning Fuels Coursework

    4 star(s)

    This was put down to the Bunsen burner; the amount of gas that it used was not constant, and as such it could not be relied upon to produce suitable results.

  2. Comparing fuels

    There was some incomplete combustion which I should have thought about and maybe changed some things in the experiment because of them. The size of the wick may have been different in the different fuel pots. I did the butanol experiment under different conditions than the ethanol and methanol.

  1. Energy Transfer in Fuels

    As the initial and final temperature is the same so is the temperature change. So the formula will be the same for each fuel. = This shows us how much energy was transferred to the water by using temperature change as the factor.

  2. The Energy Content Of Different Fuels

    On the left-hand side of the equation: 2 x ?7 x C-H (413 kjmol-1) 2 x ?2 x C-C (347 kjmol-1) 2 x ?1 x C-O (360 kjmol-1) 2 x ?1 x O-H (463 kjmol-1) 9 x O=O (498 kjmol-1) Total energy required to break the bonds: (14 x 413)

  1. Hydrocarbons As Fuels.

    fuel should not burn to give products that are difficult to dispose of, or are unpleasant or harmful. This is a considerable problem for most fuels, as hydrogen is the only fuel with a safe, non-polluting product from its oxidation reaction to water.

  2. This is a mini-project on fuel - topics include petrol and fossil fuels.

    From there the oil is sent to a refinery * OFFSHORE OIL Rigs drill wells down to oil deposits, and oil production platforms bring the oil to the surface. The platforms either float on the sea or stand on the seabed.

  1. Burning fuels.

    METHANOL CH3OH + 3O2 CO2 + 4 H2O H 2(H - C - O - H) + 3 (O=O) (C=O) + 4 (H - O - H) H Bonds Broken: C - H x 6 = 413 x 6= 2478 C - O x 2 = 335 x 2= 670

  2. GCSE Chemistry Revision Notes - everything!

    At the anode, electrons are transferred from the chlorine ions to the anode and the ions are changed into chlorine atoms. Two chlorine atoms combine to form a chlorine molecule. The new electrons on the anode are pumped away by the power source to help fill the spaces being created at the cathode.

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