Day 9 in SCI110: Water, acids, bases

Spring 2006 Schedule
Last time:
- Discussed results of physical/chemical change experiment
- Chemical bonds
  - ionic bonds - atoms transfer electrons
  - covalent bonds - atoms share electrons
- Discussion of reading: Chapter 10
  - Properties of water
    - hydrogen bonding
    - density changes
    - adhesion, cohesion, and surface tension
  - Acids and Bases
    - Tim and Moby
      - Acids and Bases
      - mole - an Avogadro's number of something - 6.02 x 10²³ units (number of carbon atoms in 12 grams of carbon-12 is a mole).
    - Worksheet, pp. 42-43
Today:
- Homework:
  - Begin reviewing for the exam (next Wednesday). Focus on practical matters. Make sure that you've done all the reading!
  - We'll have a review on Monday -- bring your questions!
  - Check out some of the links below, as well as some of the other links from days past.
- Hand in group proposals -- one page
- Acids and Bases
  - Review
    - Tim and Moby: pH - potential of hydrogen - pouvoir hydrogene
    - Worksheet, pp. 42-43
  - Worksheet, pp. 42-43
- Titration exercise (collecting data for a t-test)
- T-test of results

Links:

Common antacids
What is a salt?
Common salts, including calcium chloride.
ionic and covalent bonding, quantum mechanics -- good site!
electron dot notation
Electron dot practice (some tougher ones -- if you can get these, you are doing great!). Solutions are included.
Rules for electron dot configurations

Website maintained by Andy Long. Comments appreciated.