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Why is it necessary to include units when reporting scientific measurements?

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 1Q Chapter 2

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 1Q

Problem 1Q

Why is it necessary to include units when reporting scientific measurements?

Step-by-Step Solution:

Solution 1Q

Step 1:

A unit of measurement is a definite magnitude  of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same quantity. Any other value of that quantity can be expressed as a simple multiple of the unit of measurement.

Knowing the units of measurement that correspond with a number can give many informations than a digit sitting there by itself. Units can:

  • It help to know the viewer about the exact amount of samples used .
  • Assist in solving a mathematical problem, especially in chemistry, where you can follow the units to get to the answer;
  • It help to distinguish between the measurement system that the person is using (i.e. metric or standard).
  • When scientists take measurements, they generally have two goals—accuracy and precision. Accuracy means to get as close as possible to the true measurement (true value) of something. Precision means to be able to take the same measurement and get the same result repeatedly.
  • Unfortunately, measurement is never 100% precise or accurate, so the true value measure of something is never exactly known. This uncertainty is a result of error.
Step 2 of 1

Chapter 2, Problem 1Q is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. This full solution covers the following key subjects: include, measurements, necessary, reporting, scientific. This expansive textbook survival guide covers 19 chapters, and 2046 solutions. The answer to “Why is it necessary to include units when reporting scientific measurements?” is broken down into a number of easy to follow steps, and 11 words. Since the solution to 1Q from 2 chapter was answered, more than 534 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 1Q from chapter: 2 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295.

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Why is it necessary to include units when reporting scientific measurements?