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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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.
  • Safety goggles.

Measurements:  I am going to use 50cm³ of copper sulfate and then us the following measurements of powdered magnesium 0.5g, 1.0g, 1.5g, 2.0g, and 2.5g.

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Safety:  I will wear safety goggles throughout the experiment, I will be careful when I pour the solution and when I am shaking it I will shake it gently.

Equations:

Magnesium + Copper Magnesium + Copper

     Sulfate                       Sulfate

Mg    +    CuSO4  MgSO4    +    Cu

 

Method:  I will measure out 50cm³ of copper sulfate solution (0.5M) in a measuring cylinder then add it to a polystyrene cup, as polystyrene is a bad conductor of heat. Before I add the magnesium I will wait until the copper sulfate ...

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