1. Instructor: Denise Stiglich

2.  Career aspirations  Location  How familiar are you with chemistry?

3.  Course Home  Syllabus  Doc Sharing  Units  10 units  Discussion Board  Due Dates  Week goes Wed-Tues  ET zone  Expectations of students  Make main post and then post throughout the week.  Substantive post  No set number, need to be active  Grading rubrics for projects

4.  Is this your first course at Kaplan?

5. ◦ Please be respectful of all other students, their questions, and their answers. ◦ If you have a question, feel free to ask anytime. However, in some cases I will stop and answer all questions at once. Do not worry; I will get to your question, so you do not need to repeat it. ◦ Sometimes I will type *open*. This means the floor is open for discussion. ◦ Please do not interject “I agree” and “Good point”. This clutters the chat. We will assume that unless otherwise noted everyone agrees a point is valid. ◦ Don’t worry about typos; be as clear and concise as possible with your posts. Please refrain from using smiley’s and slang. Use proper English. ◦ Please do not start side conversations. Stay on topic.

6.  How many elements are there?

8. ◦ Think about the objects in the following list, and, answering as if you were an Ancient Greek student, determine which of the four elements make up that object (note: you may choose more than one):  A piece of gold  A drop of honey  Fog  Mud  Coal  Bread  Another object of your own choosing—come prepared to discuss it

9.  Living creatures gave the Greeks a little bit of trouble though—the Greeks could never agree on which elements made up things that were alive. What would you have said, if you were alive 2,400 years ago?  Why might living things have been so difficult to classify using this four-element system?  What about lightning, another item that the Greeks found very confusing?  How might you classify it, using this system?  Most importantly, what are some of the downfalls of such a four- element system?

10.  Atlantic-Pacific Method ◦ Decimal Present  Start counting with first non-zero on “Pacific” side. (Left)  Count every number as move right ◦ Decimal Absent  Start counting with first non-zero on “Atlantic side. (Right)  Count every number as move left Sample problems: 0.0420 cm0.020 ml 5.320 in.10 lb.

11. Addition and Subtraction Multiplication and Division

12.  How many significant figures do the following numbers have? ◦ 1243 ◦ 0.023 ◦ 890 ◦ 91010 ◦ 9010.0 ◦ 3.4 x 10 4 ◦ 9.0 x 10 -3

13.  1)334.54 grams + 198 grams = ___________________  2)34.1 grams / 1.1 mL = ___________________  3)2.11 x 103 joules / 34 seconds = ___________________  4)0.0010 meters – 0.11 m = ___________________  5)349 cm + 1.10 cm + 100 cm = ___________________  6)450 meters / 114 seconds = ___________________  7)298.01 kilograms + 34.112 kilograms = __________________  8)84 m/s x 31.221 s = ___________________

14.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = ___________________  3)2.11 x 103 joules / 34 seconds = ___________________  4)0.0010 meters – 0.11 m = ___________________  5)349 cm + 1.10 cm + 100 cm = ___________________  6)450 meters / 114 seconds = ___________________  7)298.01 kilograms + 34.112 kilograms = __________________  8)84 m/s x 31.221 s = ___________________

15.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = 31 g/mL  3)2.11 x 103 joules / 34 seconds = ___________________  4)0.0010 meters – 0.11 m = ___________________  5)349 cm + 1.10 cm + 100 cm = ___________________  6)450 meters / 114 seconds = ___________________  7)298.01 kilograms + 34.112 kilograms = __________________  8)84 m/s x 31.221 s = ___________________

16.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = 31 g/mL  3)2.11 x 103 joules / 34 seconds = 62 J/s (from 62.0588 J/s)  4)0.0010 meters – 0.11 m = ___________________  5)349 cm + 1.10 cm + 100 cm = ___________________  6)450 meters / 114 seconds = ___________________  7)298.01 kilograms + 34.112 kilograms = __________________  8)84 m/s x 31.221 s = ___________________

17.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = 31 g/mL  3)2.11 x 103 joules / 34 seconds = 62 J/s (from 62.0588 J/s)  4)0.0010 meters – 0.11 m = -0.11 m (from -0.109 m)  5)349 cm + 1.10 cm + 100 cm = ___________________  6)450 meters / 114 seconds = ___________________  7)298.01 kilograms + 34.112 kilograms = __________________  8)84 m/s x 31.221 s = ___________________

18.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = 31 g/mL  3)2.11 x 103 joules / 34 seconds = 62 J/s (from 62.0588 J/s)  4)0.0010 meters – 0.11 m = -0.11 m (from -0.109 m)  5)349 cm + 1.10 cm + 100 cm = 500 cm (from 450.1 cm)  6)450 meters / 114 seconds = ___________________  7)298.01 kilograms + 34.112 kilograms = __________________  8)84 m/s x 31.221 s = ___________________

19.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = 31 g/mL  3)2.11 x 103 joules / 34 seconds = 62 J/s (from 62.0588 J/s)  4)0.0010 meters – 0.11 m = -0.11 m (from -0.109 m)  5)349 cm + 1.10 cm + 100 cm = 500 cm (from 450.1 cm)  6)450 meters / 114 seconds = 3.9 m/s (from 3.9474 m/s)  7)298.01 kilograms + 34.112 kilograms = __________________  8)84 m/s x 31.221 s = ___________________

20.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = 31 g/mL  3)2.11 x 103 joules / 34 seconds = 62 J/s (from 62.0588 J/s)  4)0.0010 meters – 0.11 m = -0.11 m (from -0.109 m)  5)349 cm + 1.10 cm + 100 cm = 500 cm (from 450.1 cm)  6)450 meters / 114 seconds = 3.9 m/s (from 3.9474 m/s)  7)298.01 kilograms + 34.112 kilograms = 332.12 kg (from 332.122 kg)  8)84 m/s x 31.221 s = ___________________

21.  1)334.54 grams + 198 grams = 533 g (from 532.54 g)  2)34.1 grams / 1.1 mL = 31 g/mL  3)2.11 x 103 joules / 34 seconds = 62 J/s (from 62.0588 J/s)  4)0.0010 meters – 0.11 m = -0.11 m (from -0.109 m)  5)349 cm + 1.10 cm + 100 cm = 500 cm (from 450.1 cm)  6)450 meters / 114 seconds = 3.9 m/s (from 3.9474 m/s)  7)298.01 kilograms + 34.112 kilograms = 332.12 kg (from 332.122 kg)  8)84 m/s x 31.221 s = 2600 m (from 2622.564 m)