1 / 32

Is there any way I can get out of this class???

This course provides the necessary foundation for understanding chemistry. Topics include units, prefixes, significant figures, and measurement concepts. The course website and syllabus will guide students on required materials and assignments.

rotero
Download Presentation

Is there any way I can get out of this class???

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Is there any way I can get out of this class???

  2. CHEM 1114: BASIC STUFF YOU NEED • Course Website (see also: Course Syllabus) http://web.alfredstate.edu/faculty/fongjd/GenChem1.htm (use Chrome browser to open) • Course Syllabus (See also: Course Website)

  3. CHEM 1114: MORE BASIC STUFF YOU NEED • Zumdahl hard copy text [Chemistry ( 10th ed. S. S. Zumdahl and S.A. Zumdahl, Brooks-Cole 2017) ISBN9781305957404] • Can substitute hard-copy text above with equivalent e-text…just get PDF text without OWL software. (Must buy `on-line.’ In Google type: `zumdahl chemistry 10th edition e-text’ and select a vendor. ) • Scientific Calculator (phone calculators don’t cut it)

  4. Stuff you don’t need: (unless you take notes on it …a bad idea in my book) <<<

  5. YOUR 1ST HOMEWORK ASSIGNMENT: Homework 1A By Wednesday 24 Jan • Read Course Syllabus (handout in class or find at website) • ReadFong CV (curriculum vitae) and `A letter from your chemistry 1114 instructor’ Both found under Handouts or Miscellaneousat course website: http://web.alfredstate.edu/fongjd/GenChem1.htm

  6. YOUR 1ST HOMEWORK ASSIGNMENT: Homework 1A (continued) By Wednesday 24 Jan: • Write me a letter (no longer than 1 page). Tell about yourself and why you’re here. Turn the hard copy in during class (do not e-mail me!). (3 pts) • Startreadingtext (Zumdahl & Zumdahl chapter 1)

  7. YOUR 2nd HOMEWORK ASSIGNMENT: Homework 1B By Wednesday 24 Jan: Answer the questions to Homework 1B found at the website (and bring the answers in next Wednesday) FYI: You’ll need to finish Homework 1A first !

  8. WHYCHEMISTRY ?

  9. Your first in-class chemistry exercise…. This class is bullshit

  10. Can you locate the chemist’s universal obsession…..? Structure Chemist Nut case chemist Organic Chemist

  11. Molecules • You can’t see molecules directly. • You can’t measure molecules directly. • You can’t watch how molecules react. They’re just too damned small.

  12. Chemistry involves imaginative, BUT deeply abstract metaphors for things (molecules) that we can’t know directly.

  13. WHY CHEMISTRY ? CHEMISTRY…is a 250 year old discipline that can take apart, put back together, manipulate and transform objects (molecules) which are objects we have no chance to directly see nor directly measure. Thinking Like a Chemist (TLC) is powerful

  14. Where do we start to get TLC powerful ? From COURSE OUTLINE Week dates lecture topics reading 1 1/22-1/26 Units, Prefixes, Sig Figs pp. 8-22 and Measurement Concepts: the ground floor

  15. WHY START WITH UNITS ????? (BORING….) What is water, ugly human ?

  16. Fundamental SI (le SystemeInternational) Units (see Table 1.1) Basic biggies to know `mks’ • Length (meters, m) • Mass (kilograms, kg) • time (seconds, s) • Temperature (Kelvin, K) +Chemistry add-on • count of stuff (moles, mol)

  17. The “problem’ with the MKS system… • Width of a human blood cell: ~0.000002 m • time forcomputerto do a single operation: ~ 0.000000003 s • Nimitz class aircraft carrier weighs: ~ 100,000,000 kg • Distance to Sun: ~13,000,000,000 m ….It’s hard to recognize/remember how many the zeroes….

  18. Two ways to keep track of the zeroes and the decimal place: • scientific notation • Prefixes (see table 1.2…assignment 3)

  19. Review of scientific notation: aka: Bunny hop arithmetic Example: Width of a human blood cell in scientific notation 0.000002 m 6 bunny hops to right starting from decimal to form a number (2) which is between 1 and 9…. 0.000002 m= 2 *10-6 m decimal scientific notation

  20. In-class board practice converting decimal to scientific notation…count with me ! • time forcomputerto do a single operation: ~ 0.000000003 s • Nimitz class aircraft carrier weighs: ~ 100,000,000 kg • Distance to Sun: ~13,000,000,000 m 3*10-9 s 1*10+9 kg 1.3*10+10 m

  21. Prefixes are symbolic versions of powers of 10 Example: 10-3 = m= milli

  22. YOUR Third (3rd) ASSIGNMENT: By Friday 26 Jan, get this table in your head see also- Text table 1.2 p. 9

  23. Another reminder about scientific notation: Which is the correct scientific notation for 1,500 m ? • 15 *102 m • 150*101 m • 1.5*103 m • 0.15*104 m The pre-exponent term must be a number > 1 and < 10

  24. Unit prefixes(see also-table 1.2, pg 10 know these by Friday)

  25. Softball: Practicalities of `prefix picking 8*10-2 m Try to pick a prefix that yields a number > 1 8 cm Some choices Mm km m dm cm mm m 1.0*10-3 m Prefixes are picked based on ease of use ball bearing ~1 mm

  26. The prefix implies the measuring tool Which scale to weigh my fur? analytical balance (good to  1 mg) Truck scale (good to  10 kg)

  27. Boardwork Prefix practice summarized 6.1 *10-9 m =6.1 nm 3.2 *108 s =320 Ms 4.6 *10-8 g =46 ng

  28. You are taking Chemistry 1114 because… • I love chemistry and want to be a chemist. • My curricular program forces me to take it. • I’m a sick masochist who revels in pain. • Oops, I thought this was LITR 2603.

  29. Best, prefixed version of 6*10-5 m • 0.6 Mm • 0.06 mm • 60 m • 6 dm

  30. What is the best, prefixed version for 6000 s ? • 0.006 Ms • 6 ks • 6 *103 s • 6 ms

  31. What is the best, prefixed version of 8*10-8 g ? • 80 ng • 0.08 g • 80000 ng • 800 g

  32. More prefix selection problems practice ??

More Related