Foundations of College Chemistry, Binder Ready Version
Foundations of College Chemistry, Binder Ready Version
15th Edition
ISBN: 9781119083900
Author: Morris Hein, Susan Arena, Cary Willard
Publisher: WILEY
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Chapter 1, Problem 2RQ

(a)

Interpretation Introduction

Interpretation:

The given statement has to be identified as observation, hypothesis, theory, or scientific law.

The given statement is,

The battery in my watch must be dead since it is no longer keeping time.

Concept introduction:

Hypothesis:

A hypothesis is a reasonable guess based on the limited data which acts as a foundation for the further investigation.  A hypothesis is not tested and proven scientifically and the results are uncertain and it relies on the possibility.

Theory:

A theory is a well correct explanation of a natural phenomenon that is validated through observation and experimentation and it is based on wide range of data.  A theory is tested and proven scientifically, the results are certain, and it relies on evidence.

Scientific law:

A scientific law is the description of an observed fact.  It does not explain why the observable fact exists or what causes it.

Example:

A scientific law predicts the results of unborn child’s possible hair colors or how far a baseball travels when launched at a certain angle.

Observation:

An observation is the act of noticing something or judgment from something seen or experienced.

(b)

Interpretation Introduction

Interpretation:

The given statement has to be identified as observation, hypothesis, theory, or scientific law.

The given statement is,

My computer must have virus since it is not working properly.

Concept introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The given statement has to be identified as observation, hypothesis, theory, or scientific law.

The given statement is,

The air feels cool.

Concept introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The given statement has to be identified as observation, hypothesis, theory, or scientific law.

The given statement is,

The candle burns more brightly in pure oxygen that in air because supports combustion.

Concept introduction:

Refer to part (a).

(e)

Interpretation Introduction

Interpretation:

The given statement has to be identified as observation, hypothesis, theory, or scientific law.

The given statement is,

My sister wears red quite often.

Concept introduction:

Refer to part (a).

(f)

Interpretation Introduction

Interpretation:

The given statement has to be identified as observation, hypothesis, theory, or scientific law.

The given statement is,

A pure substance has a definite, fixed composition.

Concept introduction:

Refer to part (a).

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