Quiz: Scientific method

1. Which of the following statements is a law?

	An egg cooks in 17 minutes at sea level.
	An egg takes less time to cook in Baltimore than in Denver.
	An egg cooked for 27 minutes in Baltimore was badly overcooked.
	Higher altitude means lower boiling points for water, all other things held equal.

2. A hypothesis is

	a description of a pattern or relationship in experimental data
	a tentative explanation for a natural phenomenon
	a theory that has been proved
	obeyed under any circumstances.

3. A natural law is

	obeyed under any circumstances.
	an explanation that has been proved
	a description of a pattern or relationship in experimental data
	a tentative explanation for a natural phenomenon

4. The statement, "A chemical reaction never creates products that weigh more or less than the reactants", is based on three centuries of experimental observation. The statement is an example of:

a hypothesis

a theory

a datum

a law

General Chemistry Online! Quiz: Scientific method