# Chapter 1, Problem 1SAQ

### Chemistry: A Molecular Approach (4...

4th Edition
Nivaldo J. Tro
ISBN: 9780134112831

Chapter
Section

### Chemistry: A Molecular Approach (4...

4th Edition
Nivaldo J. Tro
ISBN: 9780134112831
Interpretation Introduction

Solution:

(a) The violent reaction witnessed by a chemist on mixing sodium with water is best classified as an observation. Hence, option (a) is correct.

Explanation

Explanation:

Observation is generally regarded as an act to sense the external real objects.

Theory can be described as a scientific explanation of an observed activity or a phenomenon. It explains the observations or events that are based upon any proven hypothesis.

A law is a description of an observed phenomenon or activity. It is generally regarded as a statement of fact.

A hypothesis is a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

In this case, there is a violent reaction that is observed. So, it is an observation.

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