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Vocabulary words from the 4th edition of Chemistry: An Atoms-Focused Approach
Atom
the smallest particle of an element that cannot be chemically or mechanically divided into smaller particles
Scientific Theory
a concise, extensively tested explanation widely observed natural phenomena
Element
a pure substance that cannot be separated into simpler substances
Compound
a pure substance composed of two or more elements that are chemically bonded in fixed proportion
Scientific methods
approaches to acquiring knowledge by observing phenomena, developing a testable hypothesis, and carrying out additional experiments that test the validity of the hypothesis
Scientific laws
a concise and generally applicable statement of a fundamental scientific principle
Law of definite proportions
the principle that a compound always contains the same proportion of its component elements
Note 
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