IMPORTANT SKILLS FOR CHEMISTRY PRACTICAL

(1) IMPLEMENTING

As we know that chemistry is experiment subject and it always needs a technical skills to perform better experiment. Where implementation of the observations is much necessary.

WORKING UNAIDED IN A HEALTHY AND SAFE WAY

When it is the case of practically you should work cleanly and methodically paying proper attention to health and safety precautions. When learning new skills you may work as a part of group but you will be on your own when being assessed. Only carry out practical work in the presence of qualified supervisor.

DEMONSTRATING PRACTICAL SKILL

You will be judged by your skills results which will depend on the type of experiment you are conducting. Your teacher may make some judgments based on watching at your work in the laboratory. More significant are the outcomes of your work such as the yield and purity of products, your measurements of melting or boiling points, and detail and relevance of your observation and the accuracy of masses, volumes, temperatures and times.

Measurement, observation and recording of data

If your report you must record measurements with precision that matches the quality of the equipment that you have used. Masses should be quoted to the number of decimal places that much the accuracy of the balances you have used. Similarly, with grade B 50 cm burettes, you should always note reading to the nearest 0.05 cm^3.

Note: Never write observation and measurement on scraps of paper that are easy to lose. Include a record of all measurements in your account of the experiment as well as values calculated from the measurement.

(2)ANALYSING EVIDENCE AND DRAWING CONCLUSION.

This is the stage at which you work out the meaning of your observation and measurements. Here you take the raw data and present it in ways that shows you has found out as a result of your practical work.

FORMS OF COMMUNICATION

You should choose ways of analyzing and communicating your findings which are appropriate to you experiment. Consider including labeled diagrams, tables, charts and graphs as well as continuous prose.

You will gain credit for using the language of chemistry correctly. Compare what you write with what you find in textbook or on websites to check that you are working at the right level for an advanced course.

PROCESSING THE DATA

 You should process the data in quantitative investigations to answer the chemical questions: 'how fast?' 'How much?' and 'how far?' your analysis may involve calculations. If so you must show that you understand each step of calculation. Always check that the number of significant figures in your final answer is consistent with the precision of your measurements.

ANALYSIS OF MEASUREMENT UNCERTAINTY

In any quantitative investigation you will need to assess the measurement uncertainty correctly.

Note: Always show the units of physical quantities. Label the axes of graphs and give a scale with units. Set out all calculations in full, step by step giving all the detail of your working.

DRAWING CONCLUSIONS.

Here you have to relate your findings to your knowledge and understanding of chemical theory. You need to convince your teacher, or an examiner, that you understand the chemical nature of the observation or measurements you are analyzing.

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