Empirical Data Collection and Analysis

Chemistry, SSC-Punjab Class 9. This chapter is split into 22 topics and has 473 practice questions. The topics covered are listed below, followed by 10 free sample questions from the chapter.

Topics in this chapter

1. Mean, range and percentage error of repeated measurements 23 questions
2. SI base units used in chemistry 22 questions
3. Systematic errors 20 questions
4. Scientific notation and powers of ten 24 questions
5. Measurement uncertainty and error 20 questions
6. Accuracy of measurements 21 questions
7. Random errors 20 questions
8. Systems of units: SI, CGS, MKS and Imperial 21 questions
9. The kelvin and the mole 22 questions
10. SI prefixes and their symbols 24 questions
11. Exercise questions: short, constructed, descriptive and investigative themes 22 questions
12. Key points and learning outcomes of Chapter 12 21 questions
13. Precision of measurements 21 questions
14. The metre, the kilogram and the second 21 questions
15. Science, scientific research and the need for standard units 21 questions
16. Classifying results as accurate and precise 21 questions
17. Exercise MCQs on units, prefixes and conversions 21 questions
18. Practical units used in the laboratory 20 questions
19. Celsius and Kelvin temperature conversions 23 questions
20. Volume units: cm3, dm3 and m3 20 questions
21. Converting units with SI prefixes 24 questions
22. Derived SI units and their calculations 21 questions