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I predict that the more magnesium that is added to the copper sulfate solution the higher the temperature from start to 2 minutes will be.

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Introduction

The Plan Variables: The variables for this practical are: 1. The metal that it used- magnesium, copper or iron. 2. The amount of metal that is used- any amount as long as it is divisible by 0.5 grams. 3. The concentration of the solution of the solution- molarity 0.1M or 0.5M. I am going to change the amount of metal. Fair Test: To make this a fair test I must keep everything constant except the variable (the amount of metal). But even the variable must be changed at a consistent rate (going up in 0.5g). Method Apparatus List: * Copper Sulfate solution (0.5M). * Powdered magnesium (15g in total). * 2x Beaker. * Measuring cylinder. ...read more.

Middle

Before I add the magnesium I will wait until the copper sulfate solution is at a consistent temperature and take and record the start temperature. I will then add the desired amount of magnesium (as it already weighed out for me) to the copper sulfate solution. I will observe what happens and measure the temperature change from the start to 1 minute and to 2 minutes. I will repeat this twice and then work out an average temperature change for each separate amount of powdered magnesium. If I get a result that is completely different to the other one then I will record this as a void result and repeat the amount again. This process will be done for 0.5g, 1.0g, 1.5g, 2.0g and 2.5g. ...read more.

Conclusion

19.3 20.2 23.1 38.3 19.0 (2) 19.3 19.8 21.8 36.9 17.5 18.30 Odd Results None None None None None None 1.0 (1) 19.3 20.1 28.3 57.8 38.5 (2) 19.3 20.1 32.4 58.0 38.7 38.60 Odd Results None None None None None None 1.5 (1) 19.3 20.2 39.0 69.4 50.1 (2) 19.0 19.5 32.3 67.2 48.2 49.15 Odd Results None None None None None None 2.0 (1) 19.3 19.9 35.6 70.2 50.9 (2) 19.3 19.8 29.2 71.9 53.6 51.75 Odd Results None None None None None None 2.5 (1) 19.3 21.0 49.8 73.0 53.7 (2) 19.3 20.3 45.3 73.0 53.7 53.70 Odd Results None None None None None None The Graph: The Conclusion: I have found that the more powdered magnesium that is added to the copper sulfate solution, the higher the temperature change will be. I have also found that this experiment is very reliable as I didn't encounter any odd results. ...read more.

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