1. The following lesson is one lecture in a series of Chemistry Programs developed by Professor Larry Byrd Department of Chemistry Western Kentucky University

2. Excellent Assistance has been provided by: Ms. Elizabeth Romero Ms. Kathy Barnes Ms. Padmaja Pakala Ms Sathya Sanipina

3. CHECK TEST #1 QUESTIONS Scientific Notation (Part 4)

4. SCIENTIFIC NOTATION CHECK TEST #1 QUESTIONS If your instructor requires you to do so, "TYPE" or "PRINT" out each of the following questions and then "show your work“ on 3-holed lined notebook paper. YOU CANNOT DO ANY PART IN YOUR HEAD !!!

5. 1. Give the following in scientific notation. Also, write each in correctly written scientific notation computer form! A.648 = ? B.0.00162 = ? C. 96,000,000 (as two significant figures) YOU CANNOT DO ANY PART IN YOUR HEAD !!!

6. 1. Give the following in scientific notation. Also, write each in correctly written scientific notation computer form! D. 30,000,000,000 x 10 -4 (as one significant figure) E. 0.00468 x 10 -3 (as three significant figures) F. 94.6 x 10 -4 (as three significant figures) YOU CANNOT DO ANY PART IN YOUR HEAD !!!

7. 2. Convert the following into conventional numbers (every-day-way-of-writing numbers). If part of the number is in scientific notation form, then you must get all the given problem into correctly written scientific notation form before converting it back into its conventional number. A. 7.82 x 10 -4 B.9.34 x 10 3 C.0.00381 x 10 -2 YOU CANNOT DO ANY PART IN YOUR HEAD !!!

8. 3. Use scientific notation to work the following problems: "Do" all work in scientific notation! Give "ALL" answers in scientific notation! A. (6.20 x 10 -2 ) (3.00 x 10 -1 ) = ? (answer as 3 significant figures) Make sure every part is in correctly written scientific notation form before you do “ANY” multiplying or dividing. B. (0.514 x 10 -3 ) (4.20 x 10 3 ) (answer as 3 significant figures) IMPORTANT NOTE: If one part of the problem is in a fraction form, then all parts MUST BE converted into fraction forms and then treated as a large fraction. YOU CANNOT DO ANY PART IN YOUR HEAD !!!

9. 3. Use scientific notation to work the following problems: "Do" all work in scientific notation! Give "ALL" answers in scientific notation! C. (124,000) (48.1) (12.0) (1.00) (answer as 3 significant figures) D. ( 87.6 ) = ?(answer as 2 significant figures) E. 4.00 x 10 4 divided by 2.00 x 10 3 (as 3 significant figures) IMPORTANT NOTE: If one part of the problem is in a fraction form, then all parts MUST BE converted into fraction forms and then treated as a large fraction. YOU CANNOT DO ANY PART IN YOUR HEAD !!!

10. 3. Use scientific notation to work the following problems: "Do" all work in scientific notation! Give "ALL" answers in scientific notation! F. 68.0 x 10 -3 (as 3 significant figures) 4.61 x 10 -1 G.(6.20 x 10 -3 ) (3.00 x 10 4 ) (as 3 significant figures) H. [ ] [ 16.4 X 10 -7 ] [ ] (as 3 significant figures) 10.6 x 10 -4 0.0641 x 10 -2 0.111 x 10 4 10.0 x 10 2 IMPORTANT NOTE: If one part of the problem is in a fraction form, then all parts MUST BE converted into fraction forms and then treated as a large fraction. YOU CANNOT DO ANY PART IN YOUR HEAD !!!

11. YOU HAVE COMPLETED JUST PART – IV OF SCIENTIFIC NOTATION