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Chem 3.1 Notes

QuestionAnswer
Chemical Reaction The transformation of a substance or substances into one or more new substances is known as a Chemical Reaction
Law of conservation of mass mass is neither created nor destroyed during ordinary chemical reactions or physical changes
Regardless of where or how a pure chemical compound is prepared, ______________. It is composed of a fixed proportion of elements
Law of definite proportions The fact that a chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or source of the compound is known as the law of definite proportions.
Law of multiple proportions If two or more different compounds are composed of same elements, then ratio of the mass of the second element combined with a certain mass of the first element is always a ratio of small whole numbers
John Dalton An English school teacher who proposed explanations of the three aformentioned laws
Dalton's Theory
Created by: 1531900713
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