![]() The law of conservation of mass states that the total mass present before a chemical reaction is the same as the total mass present after the chemical reaction. Scientists did not account for the gases that play a critical role in this reaction. Study with Quizlet and memorize flashcards containing terms like Based on the article 'Will the real atomic model please stand up,' why did J.J. The modern atomic theory establishes the concepts of atoms and how they compose matter. Test your knowledge of the electron cloud model, the nucleus, the electromagnetic spectrum, and more. Paper Boat Creative, Getty Images By Anne Marie Helmenstine, Ph.D. Learn the terms and concepts of atomic theory with flashcards and quizzes created by GwenHunter. \) shows that the burning of word does follow the law of conservation of mass. Study with Quizlet and memorize flashcards containing terms like Law of conservation of mass, law of definite proportions, Law of Multiple Proportions and more. Chemistry is based on the modern atomic theory, which states that all matter is composed of atoms. Take this fun quiz to see how much you know about the atom. ![]()
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