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

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Companion Notes

Introduction

Scientific method

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Companion Notes

Introduction

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1. Which of the following statements is a law?

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

2. 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

3. 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

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 law

a theory

a datum

General Chemistry Online! Quiz: Scientific method