Let’s Give it a Try… Astronauts undergo some of the most rigorous training ever conceived. They must be able to perform dangerous work while hurtling through space, all without throwing up. China is after only the best of the best for its space program, so candidates are tested for what? A) Hand-eye coordination B) Bad breath C) Sobriety D) Parallel parking skills Source: Wait Wait…Don’t Tell Me! Daily News Quiz, 8/6/09

Answer The correct answer is B. If you want to become a Chinese astronaut, don’t forget to floss; the Chinese training program won’t accept space hopefuls who have bad breath. Ever ready to meet the needs of the marketplace, Altoids quickly responded with a new product line: Asteroids: The Curiously Strong, Suborbital Mint. Source: Wait Wait…Don’t Tell Me! Daily News Quiz, 8/6/09

Clicker Question How many of the following are compounds? S8, NO2, KCl, CH4, H2SO4 A) 1 B) 2 C) 3 D) 4 E) 5

Clicker Question How many of the following are compounds? S8, NO2, KCl, CH4, H2SO4 A) 1 B) 2 C) 3 D) 4 E) 5

Clicker Question How many of the following are examples of a chemical change? I. burning of wood II. pulverizing (crushing) rock salt III. dissolving of sugar in water IV. melting a popsicle on a warm summer day A) 0 B) 1 C) 2 D) 3 E) 4

Clicker Question Which of the following is a homogeneous mixture? A) potting soil B) sodium chloride (table salt) C) pure water D) oil and vinegar dressing E) sports drink (like Gatorade) (not completed in lecture but posted for reference)