Chapter 1
Introduction: Matter and Measurement

In science, a law is defined as a concise, verbal or mathematical, statement that summarizes a vast number of experimental observations. It…

Chemistry is an empirical science. Scientists often pose questions to understand the chemistry in everyday life and seek answers to these questions.…

According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is…

The characteristics that enable us to distinguish one substance from another are called properties.
A physical property is a characteristic of…

Every measurement provides three kinds of information: the size or magnitude of the measurement (a number), a standard of comparison for the…

The International System of Units or SI system, by international agreement, has fixed measurement units for seven fundamental properties: length,…

Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process.…

All the digits in a measurement, including the uncertain last digit, are called significant figures or significant digits. Note that zero may be a…

Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions
Free SampleFree access at this time
The use of natural gas continues to grow with increased discovery and production of unconventional shale resources. At the same time, the natural gas…

Agricultural ammonia (NH3) emissions (90% of total EU emissions) are responsible for about 45% airborne eutrophication, 31% soil acidification and…