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Reactivity of metals Investigation

Extracts from this document...

Introduction

Skill Area P: Planning and Investigating Procedures Introduction For this task we are asked to investigate the reactivity of metals. We are asked to investigate into the following metals: * Iron * Calcium * Zinc * Magnesium The above metals will be reacted with dilute hydrochloric acid. The metals react exothermically with dilute hydrochloric acid. The metals react and give off heat. We will have to bare in mind the factors that can vary the reactions between the metals and the acid. Factors We have to bare in mind the following variable factors of the experiment and work out what factors will affect the experiment: * Volume of acid * Mass of metal * Concentration of acid * Equipment * Starting temperature * Type of metal used The type of metal should be the only variable factor that I will change during my experiment. I have chosen to only vary this factor because I don't really need the other factors to create a good experiment. Apparatus This is a list of the apparatus that I will need to create an accurate experiment: * 1 Polystyrene cup * Thermometer * Plastic lid for the cup * 4 metals (Iron, calcium, zinc, magnesium) ...read more.

Middle

0:30 96 1:00 93 1:30 91 2:00 90 Magnesium Reading time (minutes) Temperature (oC) 0:30 75 1:00 70 1:30 67 2:00 66 2:30 65 Zinc Reading time (minutes) Temperature (oC) 0:30 26 1:00 27 1:30 28 2:00 28 2:30 28 3:00 29 3:30 29 4:00 29 Iron Reading time (minutes) Temperature (oC) 0:30 26 1:00 26.5 1:30 26.5 2:00 26.5 2:30 26.5 3:00 26.5 3:30 26.5 4:00 27 4:30 27 5:00 27 5:30 27 Experiment 3 Calcium Reading time (minutes) Temperature (oC) 0:30 98 1:00 94 1:30 91 2:00 90 2:30 90 Magnesium Reading time (minutes) Temperature (oC) 0:30 75 1:00 70 1:30 67 2:00 66 Zinc Reading time (minutes) Temperature (oC) 0:30 26 1:00 27 1:30 28 2:00 28 2:30 29 3:00 29 3:30 29 Iron Reading time (minutes) Temperature (oC) 0:30 26 1:00 26 1:30 26.5 2:00 26.5 2:30 26.5 3:00 26.5 3:30 26.5 4:00 27 4:30 27 5:00 27 Average Results Calcium Reading time (minutes) Temperature (oC) 0:30 97 1:00 93 1:30 91 2:00 91 2:30 90 Magnesium Reading time (minutes) Temperature (oC) 0:30 75 1:00 69 1:30 66 2:00 66 Zinc Reading time (minutes) ...read more.

Conclusion

The equipment should be cleaned to prevent infections. If the acid gets infected the results will probably be incorrect. I could have probably carried out the experiments in a glass beaker instead of a polystyrene cup because sometimes the polystyrene cups were not very clean and could cause and infection. Do I have enough results to create a good conclusion? I think I do have enough results. Repeating the experiment is the best way of getting good results and a good average result. It gives you more reliable results and thus giving you a better conclusion. How could I improve my experiment? I think the only way I could improve my experiment is to have used a glass beaker instead of a polystyrene cup. I could have recorded the results at smaller time intervals but I think 30 seconds is a good time to read the thermometer and write down the results with enough time to prepare for the next reading. What other experiments could I have done? This is a list of the other experiments I could have used to place Calcium, Magnesium, Zinc and Iron In the reactivity series: * Reacting the metals with water * Reacting the metals with oxygen * Reacting the metals with steam - 1 - Alex Selby ...read more.

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