State the significant figure rule for multiplying and ...



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CHEMISTRY REVIEW

UNIT 1 – SCIENTIFIC MEASUREMENTS

1. Contrast accuracy and precision.

2. Quantities have two parts, a ____________ and a ____________.

3. There are two types of quantities, ____________ and ____________. Which has sig figs associated with it and which does not?

Match the following.

4. ____ 1 sig fig A 600.

5. ____ 2 sig figs B 6.000 x 1012

6. ____ 3 sig figs C 600

7. ____ 4 sig figs D 0.00060

Express 0.0032065614 in scientific notation with the following number of sig figs.

8. 2 sig figs_____________________________

9. 4 sig figs_____________________________

10. 6 sig figs_____________________________

11. State the significant figure rule for multiplying and dividing, and then solve the problem.

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12. State the significant figure rule for adding and subtracting, and then solve the problem.

50.23 + 23.7 + 14.678 = _________

13. Define a base unit and give an example.

14. Define a derived unit and give an example.

15. The SI base unit for time is ____________, length is ____________, mass is ____________, and temperature is ____________.

16. When we multiply by a conversion factor, why does the value of the quantity remain unchanged?

17. Which conversion factor would be used to change feet to inches: 1 foot or 12 inches?

12 inches 1 foot

18. Use dimensional analysis to convert 15 liters to cm3.

19. Use the given apothecary units to determine the mass of 150 grains in ounces.

20 grains = 1 scruple 3 scruples = 1 dram 8 dram = 1 ounce

Use the data for the liquid in class and construct a graph. Be sure to include all parts of the graph discussed in class.

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20. Identify a part of the graph that you could interpolate.

21. Identify a part of the graph that you could extrapolate.

Review your lab equipment list and safety rules. Both are included on the test.

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