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Chapter 1
Scientific Laws In science, a law is defined as a concise, verbal or mathematical, statement that summarizes a vast number of experimental observations. ...
Chemistry is an empirical science. Scientists often pose questions to understand the chemistry in everyday life and seek answers to these questions. To ...
Chemistry is the study of matter and the changes it undergoes. Matter is anything that has mass and occupies space. Matter is all around us; the air, ...
Matter: Pure Substances and Mixtures According to its composition, the matter can be classified into two broad categories — pure substances and ...
The characteristics that enable us to distinguish one substance from another are called properties. Physical Properties of Matter A physical property is ...
The universe is composed of matter in different forms, and all forms of matter contain energy. The different forms of energy on Earth originate from ...
Every measurement provides three kinds of information: the size or magnitude of the measurement (a number), a standard of comparison for the measurement ...
The International System of Units or SI system, by international agreement, has fixed measurement units for seven fundamental properties: length, mass, ...
Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy ...
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such ...
All the digits in a measurement, including the uncertain last digit, are called significant figures or significant digits. Note that zero may be a ...
Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach ...
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