Welcome to 1C.

1. Welcome to 1C.

2. Procrastination:http://www.ufunk.net/en/humour/procrastination/Procrastination:http://www.ufunk.net/en/humour/procrastination/ • Longitudinal study of first year students :http://http-server.carleton.ca/~tpychyl/prg/conferences/apa2002/apaslides2002/sld002.htm • Higher stress • Poorer coping strategies, avoidant coping styles (denial, behavioral, mental) • Higher alcohol/smoking/recreational drug use • Fewer wellness behaviors (healthy eating habits, sleeping) • Greater health problems • “But cramming makes me do better on tests, I don’t care if it kills me, I want an A” • No it doesn’t! • Howell, A. J., Watson, D. C., Powell, R. A., Buro, K. (2006) Academic procrastination: The pattern and correlates of behavioural postponement • Tice, D. M., & Baumeister, R. F. (1997) Longitudinal Study of Procrastination, Performance, Stress, and Health: The Costs and Benefits of Dawdling [2]

3. Curve of Forgetting Day 2: 50-80% Retention Day 7: <50% Retention Day 30: 2-3% Retention If you don’t study till midterms, you are relearning nearly EVERYTHING from scratch, without help…… Study a little bit every day and you don’t have to study as much!!!!!!

4. So how do I fight this? Before class. • Skim lecture slides. • Skim book material on this topic. Special attention to figures. • Try to remember/connect it to things you have seen before. • Should take about 10 minutes per class period.

5. So how do I stop procrastinating? • Use easy to handle time gaps. • Immediately after class: (preferably within 10 minutes, but at absolute latest, before sleep. • 2+ questions you have • 3+ sentence summary of class from notes • This should not take more than about 10 minutes. The sooner you do it, the faster it will go.

6. So how do I stop procrastinating? • Use easy to handle time gaps. • Realistic goals for increased studying. • I will study, do problems, review chemistry at least ____ minutes per day. Suggested 20 minutes. No interruptions (turn off your phone/messager/email/facebook, lock your doors). • Alternative: I will do ____ number of problems per day. Suggested, do sapling problems related to each class immediately afterwards. On “off” days pick 2 book problems.

7. Other tips!Go to this webpage and read/do the things recommended • http://www.fullerton.edu/DSS/new_handbook/sec7/steps.htm

8. Note about in class: • Technology Use: Only for subject material use. • Block SMS: *35*0000*16#, simply redial to reinitiate. • Ban yourself from non-class social networking/youtube/email. • Stay engaged. • If you can’t focus, take a minute to work an example problem by yourself. Then come back to me. You might miss some information, but you weren’t really learning anyway. (come to office hours to get any missed notes) • Write lots of questions for later.

9. Chapter 11: Acids and BasesWhy do we care and real life explanation goals?

10. Acid Rain NatGeo • Sulfuric and Nitric acids in the air are flushed out by rain. • Acids fall to earth eroding and killing • More details to follow!

11. Acid and Bases in Human Biology Healthtap.com • Stomach acid: pH 1.5-3.5. Used to digest proteins by denaturing (unraveling) them. • How do antacids work? • We will explain: • Acidosis and Alkalosis • Lactic acid: The myth

12. pH of common substances Acid: <7 Neutral: 7 Alkaline: >7 • Some Things to notice: • Soda pH in relation to acid rain • pH range of blood • Tap water more acidic? Atkins

13. Definition Time

14. Acids Acids donate a proton (or accepts electron pair) pH<7 + +

15. + + -

16. Bases • Bases accept a proton (or donates electron pair) • pH>7 OH- + +

18. Lewis Acids and Bases: Review of Definitions • Bronsted: • Acid: Donate H+ • Base: Accept H+ • Includes all Arrhenius, but also includes NH3 or CH3NH2 • Lewis • Acid: Accepts lone pair • Base: Donates lone pair • Includes all the rest, also things like BF3, Ag+, CO2 • Arrhenius: • Acid: Donate H+ • Base: Donate OH- • Works for substances likeHCl and NaOH, but what about NH3? Arrhenius Bronsted Lowry Lewis Venn Diagram

19. Conjugate Acid/Base pairs • Acids lose a proton to become the conjugate base. • Bases gain a proton to become it’s conjugate acid Conjugate Base Acid Conjugate Acid Base

20. Name the conjugate base of the following weak acids H2SO4 HSO4- - + + Conjugate Base

21. Name the conjugate base of the following weak acids • HCN • CN- + + - Conjugate Base

22. Name the conjugate base of the following weak acids • C6H5COOH • C6H5COO- + + -

23. Bases and Nitrogen .. N • Many of our bases will be due to a nitrogen’s lone pair. • Contains a nitrogen with 3 bonds and a lone pair • The conjugate acid will have 4 bonds (1 to a hydrogen) with a + charge. Simplest Example NH3

24. Write the conjugate acid of the base: Base Conjugate Acid

25. Bases and Nitrogen .. N • Many of our bases will be due to a nitrogen’s lone pair. • Contains a nitrogen with 3 bonds and a lone pair • The conjugate acid will have 4 bonds (1 to a hydrogen) with a + charge. Simplest Example NH3 Dimethyl Amine (CH3)2NH

26. Write the conjugate acid of the base: Base Conjugate Acid

27. Bases and Nitrogen .. N • Many of our bases will be due to a nitrogen’s lone pair. • Contains a nitrogen with 3 bonds and a lone pair • The conjugate acid will have 4 bonds (1 to a hydrogen) with a + charge. Simplest Example NH3 Pyridine Dimethyl Amine (CH3)2NH

28. Write the conjugate acid of the base Base Conjugate Acid Pyridine