| Question | Answer |
| 1. Convert to S.N: .000000540 | 5.40 X 10-7
|
2. Convert to long form: 2.3 X 109 | 2300000000
| 3. How could 100 be written with 2 Significant figures? | 1.0 X 102
| 4. Convert .8856 cm to nm. | 8,856,000
| 5. Metric unit of mass? | kilogram
| 6. Type of research that seeks to gain new knowledge | pure research
| 7. When a hypothesis is not supported by the data, what happens? | should be discarded or modified
| 8. You collect data on the % of students that are various ages at LHS. This is what type of data? | quantitative
| 9. You are studying the effects of different temp. on dissolving rates of salt.What is the dependent variable? | dissolving rate/time
| 10. Metric unit of temp? | Kelvin
| 11. List two ways volume is measured. | water displacement, lXwXh
| 12. How close a measurement is to the true value is_________. | accuracy
| 13. A student measured the length of his 3 lab partners' shoes. The lengths were 28.0 cm, 23.538 cm, and 25.68 cm. What is the total length?(using the correct # of S.F.) | 77.2 cm
| 14. What is the importance of determining the correct # of Significant figures in a measurement? | tells the precision of the measurement
| 15. Solve (no calculator!): (4 X 102) X (1 X 108) | 4 X 1010
| 16. Why do we use scientific notation? | makes writing large or small #'s easier
| 17. What is the function of a control in an experiment? | gives standard for comparison
| 18. What is Chemistry? | study of matter and its changes
| 19. Which piece of lab equipment measures volume most precisely? | graduated cylinder
| 20. What should you remember about your hair and footwear in a lab? | pull hair back, no open-toed shoes
| 21. Solve (no calculator!): (9 X 108)/(3 X 10-4) | 3 X 1012
| 22. A graduated cylinder's smallest increments are in 5's. To what decimal place should you estimate? | 10ths place
| 23. Which piece of lab equipment best holds liquids for heating | beaker
| 24. How does a scientific theory differ from a law? | theories explain why things occur and laws are accepted facts about nature
| 25. What is the systematic approach to problem-solving that uses conversion factors to convert from one unit to another? | dimensional analysis |
