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

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Companion Notes

Introduction

Scientific method

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Introduction

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

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

2. 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 law

a theory

a hypothesis

a datum

3. Which of the following statements is a law?

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

4. A natural law is

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

General Chemistry Online! Quiz: Scientific method