1. Chapter 1

2. What do these have in common? Odd one out???

3. Measuring = units MASS 1 kg LENGTH/DISTANCE 1 m TIME 1 s

4. CONVERT 1 kg = 2.20462262 pounds 1 meter = 3.2808399 feet 1 s = 1 s

5. Scale of the Universe  A super cool applet A super cool applet

7. Convert, use Scientific Notation

8. Examples

12. Practice 1 2.5 days to seconds _____________________ 3.5 km to mm ___________________________ 43 cm to km ____________________________ 22 mg to kg _____________________________ 671 kg to µg _____________________________ 8.76 x 10 7 mW to GW _____________________ 1.753 x 10 -13 s to ps ________________________

13. Precision & Sig. Dig.

14. LAB on Precision  1) Use the solid 1 m stick and measure the length of the lab table  2) Use the 1 m stick marked with dm  3) Use the 1 m stick marked with cm  4) Use the actual meter stick to measure the length of your desk.  Write down the results to the maximum precision in each case.

15. SIG FIGS MADE SIMPLE

17. Sig. Fig. 100 000 100. 00 202 000 0.0050 340 505 0.00505

18. Practice The value of the speed of light is now known to be 2.997 924 58 ×10 8 m/s.Express the speed of light in the following ways: a) 3 SF b) 5 SF c) 7 SF

19. How many Sig.Figs? 300 000 000 m/s 3.00 ×10 8 m/s 25.030 °C 0.006 070°C 1.004 J 1.305 20 MHz

20. Adding and Subtracting # of digits 0.______ (after the decimal point) = the least precise 3345.28 + 0.2 = 3345.48 = 3345.5 57.8 – 0.567 = 52.233 = 52.2

21. A QUICK SELF-CHECK  0.0845 kg ___________  37.00 h _____________  8630000.000 mi _____  0.000 000 0217 g ____  750 in ______  0.5003 s ______

22. Multiplying and Dividing #SF (result) = the least #SF (A*B) 1.34 x 2300 = 3082 = 3.1  10 3 #SF (result) = the least #SF (A/B) 23967 / 45 = 532.6 = 5.3  10 2

23. Practice Bicyclists in the Tour de France reach speeds of 34.0 miles per hour (mph) on flat sections of the road. What is this speed in a) km/h and b) m/s - ? 1 mile = 1.61 km

24. Continued

25. Practice The largest diamond ever found had a size of 3106 carats. One carat is equivalent to a mass of 0.200g. Use the fact that 1 kg (1000.0g) has a weight of 2.205 lb under certain conditions, and determine the weight of this diamond in pounds.

26. Density lab Remember: each student is supposed to turn in his / her own report.