9S1 Lesson 5/6 - Experimental design

• Chemistry
• Secondary Education

Lesson 1 - What is IGCSE Chemistry?

Suggest advantages and disadvantages of experimental methods and apparatus

1

Sequencing steps

• Arrange the correct order of the steps using the scientific method.
• Share or give your feedback.

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Sequencing steps

• Arrange the correct order of the steps using the scientific method.
• Share or give your feedback.

Designing an Investigation

• Identify the independent variable and the values you plan to use for it
• Identify the dependent variable and the method to be used to measure it
• Suggest how you will control variables
• Suggest the most appropriate apparatus and techniques
• Outline the experimental procedure in a series of numbered steps
• Identify risks and describe any safety precautions
• Record and analyse the results or data
• Trials or repeat readings and sources of error
• Make your conclusion
• Share your findings with others

2

Experimental design

• Read the important points of a good experimental design.
• Highlight the sentence or line in the sample investigation of the points you can find.
• Decide if the sample investigation has a good experimental design.

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Designing an Investigation

• Identify the independent variable and the values you plan to use for it
• Identify the dependent variable and the method to be used to measure it
• Suggest how you will control variables
• Suggest the most appropriate apparatus and techniques
• Outline the experimental procedure in a series of numbered steps
• Identify risks and describe any safety precautions
• Record and analyse the results or data
• Trials or repeat readings and sources of error
• Make your conclusion
• Share your findings with others

(1) Identify the name of the apparatus.

(2) Read and write the measurement.

(3) Convert the measurement to a given unit.

(4) Identify the number of Significant digits.