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

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Companion Notes

Introduction

Scientific method

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

	a theory		an experimental observation
	a law		a hypothesis

2. A hypothesis is

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

3. 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.
	Bacteria in the oysters may have caused the illness.
	Symptoms include nausea and dizziness

4. A natural law is

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