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?

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

2. A natural law is

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

3. A hypothesis is

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

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 law

a theory

a hypothesis

a datum

General Chemistry Online! Quiz: Scientific method