Instructor: Denise Stiglich

Career aspirations Location How familiar are you with chemistry?

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

Is this your first course at Kaplan?

◦ 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.

How many elements are there?

◦ 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

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?

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 cm 0.020 ml5.320 in. 10 lb.

Addition and Subtraction

Multiplication and Division

How many significant figures do the following numbers have?◦ 1243◦ 0.023◦ 890◦ 91010◦ 9010.0◦ 3.4 x 104

◦ 9.0 x 10-3

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 = ___________________

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 = ___________________

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 = ___________________

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 = ___________________

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 = ___________________

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 = ___________________

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 = ___________________

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 = ___________________

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)