20-21 unit 1 test review.docx

Unit 1 Test Review 2020 Complete the following either on a separate sheet of paper or on word. If completing on word, please type your answers in a different color. Save as “Lastname_Firstnam_unit1testreview”. 1. How does quantitative information differ from qualitative information? 2. Why is it important for a measurement system to have an international standard? 3. List the seven SI base units and the quantities they represent. 4. What is the numerical equivalent of each of the following SI prefixes? a. kilob. microc. centid. millie. mega5. Identify the SI unit that would be most appropriate expressing the length of the following. a. width of a gymnasium b. length of a finger c. distance between your town and the closest border of the next state d. length of a bacterial cell 6. What is a derived unit? a. What is the SI derived unit for area? 7. What is the volume, in cubic meters, of a rectangular solid that is 0.25 m long, 6.1 m wide, and 4.9 m high? 8. What is the mass of a sample of material that has a volume of 55.1 cm3 and a density of 6.72 g/cm3 ? 9. How many grams are in 882 μg? 10. The density of gold is 19.3 g/cm3 . a. What is the volume, in cubic centimeters, of a sample of gold that has a mass of 0.715 kg? b. If this sample of gold is a cube, what is the length of each edge in centimeters? 11. Compare accuracy and precision. 12. Round each of the following measurements to the number of significant figures indicated. a. 67.029 g to three significant figures b. 0.15 L to one significant figure c. 52.8005 mg to five significant figures d. 3.174 97 mol to three significant figures