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

An Investigation Into How the Mass of Zinc Effects the Heat Change In the Displacement Reaction Between Zinc and Copper Sulphate.

Extracts from this document...


GCSE Chemistry An Investigation Into How the Mass of Zinc Effects the Heat Change In the Displacement Reaction Between Zinc and Copper Sulphate This investigation aims to look at how a factor can change the amount of heat produced in a displacement reaction. The displacement reaction that will occur during this experiment will be an exothermic reaction, which will mean that heat will be given out to the surroundings. The possible independent variables that could be investigated are: * The mass of zinc * The pressure of the surrounding atmosphere * The concentration of the copper sulphate * The surface area of the solid reactant, i.e. the zinc * The volume of copper sulphate * The light intensity * The pH of the copper sulphate I have chosen to vary the mass of the zinc, as it is simple and easy to measure and control. Therefore the controlled variables will be: * The concentration of the copper sulphate * The volume of the copper sulphate The dependent variable that I will be measuring, will be the temperature change of the reaction. ...read more.


21 20 34 34 13 14 13.5 25 x 4.2 x 13.5 1418 0.65 21 20 39 38 18 18 18 25 x 4.2 x 18 1890 0.8 20 21 45 42 25 21 23 25 x 4.2 x 23 2415 ANALYLSIS The shape of the graph shows us that an increase in the amount of zinc, results in an increase in the heat change. The results obtained from the line of best-fit show that that the amount of zinc (g), is directly proportional to the heat change of the reaction: * At 0.2g the heat change is 600J * At 0.4g the heat change is 1200J * At 0.6g the heat change is 1800J * At 0.8g the heat change is 2400J These results agree with my hypothesis, which is that an increase in the amount of zinc that is added to 25cm�, results in an increase in the heat change of the reaction, and this means that the obtained graph is a similar shape to my predicted graph. I also expected to see that the heat change for 0.2g of zinc would double for the heat change using 0.4g of zinc, and so the heat change would be directly proportional to the amount of zinc. ...read more.


* The amount of copper sulphate not being measured out exactly * The apparatus could have been dirty from the previous experiment that had just taken place, and so there could have been some extra copper sulphate solution or zinc in the cup. I think that my results are accurate as the majority of the results are close to the curve, and there is only one anomalous result. My results are therefore reliable and this is shown when they prove that an increase in the mass of the zinc resulted in an increase in the heat change of the reaction. As a good set of results has been obtained from the experiment, I think that I have chosen an appropriate range of measurements. To improve the result that were produced in a future experiment, the volume of copper sulphate solution would be measured out more precisely, the apparatus would be cleaned out more thoroughly, and the hole around the thermometer could have a seal placed around it. In order to extend this investigation I could investigate the other different independent variables, such as pressure, concentration of copper sulphate solution or volume of copper sulphate solution. ...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 Classifying Materials 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 Classifying Materials essays

  1. Marked by a teacher

    In this CDA I will write about how plastic bags are made, why plastic ...

    Although, people may argue that plastic bags are re used at their homes, many still end up being thrown away and then entering land mines. Plastic bags are also often blown with strong winds and then are exposed to birds or other land animals that may be harmed by them or even killed.

  2. Investigating the Factors Affecting the Temperature Change Between Zinc and Copper Sulphate

    it is an endothermic reaction. When bonds are made energy is released, and therefore it is and exothermic reaction. When copper sulphate and zinc are reacted together, the bonds that are broken are: Cu - SO4 Zn - Zn atoms atoms This is an endothermic reaction because energy is put in so the bonds can be broken.

  1. Investigation into how mass affects the rate of fall.

    On the graph, the highest and lowest results are shown as well as the small range between them. Instead of testing the rate of fall, of the cake case five times, the rate was tested seven times to ensure that the results ere accurate.

  2. The rates of reaction between CaCO3 and HCL

    measured to 0.01ml were to small to measure out 20ml 1 20 x 100 = 5.00% (2 dp) the 5% represents the chance of making an error on measuring the HCl. This 5% does not take in to account human error only machine error.

  1. Investigation of Energy Changes in a Displacement Reaction.

    While stiring with the thermometer regularly check the temperature and when this temperature stops rising record the highest temperature reached before it begins to fall again. 7. Subtract the initial temperature and record the temperature rise. 8. Repeat the process and take an average of the temperature rises recorded as your final results.

  2. An Investigation Into The Factors That Affect The Enthalpy Change During A Displacement Reaction.

    If the copper sulphate solution has a volume of 50cm3 it has a mass of 50g. This is because, density = mass Volume. In using the previously stated equations it should be quite easy to calculate the heat energy produced.

  1. Affect of concentration on reaction

    Method used is almost identical as before, with the only differences of CaCO3 ground into fine powder and weigh accurately to 5g contained within a beaker. Results 2 50cm3 2.0M HCl Starting Mass 5.00g CaCO3 (Powdered) Time (seconds) Mass (grams)

  2. The role of mass customization and postponement in global logistics

    extend the definition to the five MC Performance Dimensions, namely: Design and new product development, Supplier management and supply chain agility, Production flexibility and capacity management, Variety and inventory management, Communications and information management Design and new product development Satisfy customer interests by efficiently (time and resources/cost)

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