General Chemistry Online: Companion Notes: Introduction: Quiz: Scientific method

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Companion Notes

Introduction

Scientific method

1. Which of the following statements is a law?

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

2. A number of people become ill after eating dinner in a restaurant. Which of the following statements is a hypothesis?

	Everyone who ate oysters got sick.
	The cooks felt really bad about it.
	People got sick whether the oysters were raw or cooked.
	Symptoms include nausea and dizziness
	Bacteria in the oysters may have caused the illness.

3. A hypothesis is

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

4. The statement, "Osmium has a density of 22.59 g/mL, which makes it the densest element known" is an example of:

	a law		a hypothesis
	a theory		an experimental observation