Chemestry Assessed Practical :: Papers

Chemestry Assessed Practical 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 50cm ³ of copper sulfate and then us the following measurements of powdered magnesium 0.5g, 1.0g, 1.5g, 2.0g, and 2.5g. =================================================================== 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: [IMAGE]Magnesium + Copper Magnesium + Copper Sulfate Sulfate [IMAGE]Mg + CuSO4 MgSO4 + Cu Method: I will measure out 50cm ³ 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 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 Chemestry Assessed Practical :: Papers Chemestry Assessed Practical 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 50cm ³ of copper sulfate and then us the following measurements of powdered magnesium 0.5g, 1.0g, 1.5g, 2.0g, and 2.5g. =================================================================== 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: [IMAGE]Magnesium + Copper Magnesium + Copper Sulfate Sulfate [IMAGE]Mg + CuSO4 MgSO4 + Cu Method: I will measure out 50cm ³ 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 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