Chemistry

Chemistry, 31.08.2019 18:30, keshonerice

In the atomic theory it states that all atoms of the same element are identical. in the 21st century, science knows this is incorrect because of the presence of:

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Chemistry, 27.06.2019 23:00, jinxjungkook3

Which of the following is a key tenet of dalton's atomic theory (click on all that apply)? (1 point) all elements are composed of tiny indivisible particles called atoms. atoms of the same element are identical. the atoms of any one element are different from those of any other element atoms of different elements can physically mix together or can chemically combine to form compounds chemical reactions occur when atoms are separated from each other, joined, or rearranged in a different combination. atomic nuclei contained the negatively charges electrons. atoms retain their identity in a chemical reaction.

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Biology, 12.07.2019 11:40, nataliemoore1974

Throughout most of the 1800s, the most widely accepted atomic theories were based on research performed by an english chemist named john dalton. the main tenets of dalton's theory were: elements are made of tiny particles called atoms. atoms cannot be divided into smaller particles. all atoms of a given element are identical. the atoms in one element are different from the atoms in another element. a chemical reaction is a rearrangement of atoms. then, in 1897, while studying electric discharges in a cathode-ray tube, a british physicist named j.j. thomson discovered electrons. which tenet of dalton's atomic theory did thomson disprove? a. elements are made of tiny particles called atoms. b. atoms cannot be divided into smaller particles. c. the atoms in one element are different from the atoms in another element. d. all atoms of a given element are identical.

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Chemistry, 19.09.2019 16:20, vorhees2406

25. which one of the following is not one of the postulates of dalton's atomic theory? a) atoms are composed of protons, neutrons, and electrons. b) all atoms of a given element are identical; the atoms of different elements are different and have different properties. c) atoms of an element are not changed into different types of atoms by chemical reactions: atoms are neither created nor destroyed in chemical reactions. d) compounds are formed when atoms of more than one element combine; a given compound always has the same relative number and kind of atoms. e) each element is composed of extremely small particles called atoms.

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Chemistry, 23.09.2019 20:00, donnafranks2003

Which is one way that dalton's atomic theory has been shown to be incorrect? some atoms of a particular element are identical to atoms of other elements. atoms can be destroyed by chemical reactions. atoms can change identity in chemical reactions. atoms can be split into subatomic particles.

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