CHE 11, Fall 1998
Quiz 1
September 11, 1998

Show your work for full credit. Give your answers with the correct number of significant figures.

1. Science fiction often uses nautical analogies to describe space travel. If the starship U.S.S. Enterprise is traveling at warp factor 1.71, what is it speed in knots? (Warp 1.71 = 5.00 times the speed of light; speed of light = 3.00 x 10⁸ m/s; 1 knot = 2000 yd/h, exactly; 1 meter = 1.0936 yards)

2. Use Dalton’s atomic theory to account for the Law of Conservation of Mass. (This law states that Mass is neither created nor destroyed in a chemical reaction.)

3. Explain the difference between theory and experiment. How are these concepts related?

4. Describe one property of atoms that is inconsistent with Dalton’s atomic theory.

5. Two spherical objects have the same mass. One floats on water; the other sinks. Which object has the greater diameter? Explain your answer briefly.