1. Press F5 Press the down arrow to view problems

2. Test Review Questions How many significant figures are in the following measurements? 1. 0.0040 mL ________ 2. 100 g________ 3. 102.0 cm ________ 4. 2010. L ________ 5. 1.45×10 3 g ________ 6. π ________

3. Test Review Questions Write the following measurements in scientific notation 7. 1245 mL ________________ 8. 0.0245 g ________________ Write the following measurements in standard notation 9. 1.45×10 6 mL ________________ 10. 3.98×10 -5 g ________________

4. Test Review Questions Record the following measurements with the correct number of significant figures. 11. ________________ 12. ________________ 1234 cm 100 200 300 mL

5. Test Review Questions Round the following measurements to 2 significant figures. 13. 4,578 mL ________________ 14. 0.024672 g ________________ What is the marked interval in the following measurement? 15. 4.68 mL ________________ 16. 458 g ________________ 17. 0.042 g ________________

6. Test Review Questions 18. How close a measurement comes to a true value is ____________________ 19. A measurement of how much gravity pulls on an object ____________________ 20. The SI unit for mass is the ____________________ 21. The SI unit for energy is the ____________________

7. Test Review Questions 22. A certain substance has a temperature of 100°C what is the temperature in K (K=°C+273) ____________________ 23. Generally, as the temperature of a substance decreases its volume ____________________ 24. Generally, as the temperature of a substance decreases its density ____________________

8. 25. 5.250 m + 9 m CalculationCalculator says:Answer 14.250 m 26. 300.374 g – 23.7 g 276.674 g 27. 450.2 cm × 2.4 cm 1080.48 cm 2 28. 7.2 cm 3 ÷ 5 cm 2 1.44 cm Test Review Questions Round the following answers to the proper number of significant figures

9. Test Review Questions 29. Fill in the blank. 1 m = ______ nm 30. Fill in the blank. 1 km = ______ m 31. Fill in the blank. 1 m = ______ dm 32. The symbol for calcium is ______.

10. Test Review Questions Complete the following problems. Show all relevant work. 33. Convert 3.27 ns to Ms 34. A certain solid has a density of 2.96 g/mL. What is this density in units of mg/gallon? (Note: 1 L = 33.8 oz; 1 oz = 0.125 cups; 1 cup = 0.0625 gallons) 35. A student has 20.4 mL of a liquid that has a density of 8.78×10 -5 g for every microliter. What mass, in grams, does the student have?