Multiple Choice
Dalton used the lightest element as his standard for atomic mass. What is this element?
2. Atoms and the Periodic Table
Atomic Theory
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is NOT a component of Dalton's Atomic Theory?
A
A chemical reaction rearranges the grouping of atoms.
B
Atoms are composed of protons, neutrons, and electrons.
C
Atoms of a given element are chemical and physically identical.
D
Atoms of different elements combine in simple, whole number ratios to form compounds.
E
Matter is composed of atoms that are unable to divided any further.
Verified step by step guidance1
Begin by reviewing Dalton's Atomic Theory, which was proposed in the early 19th century. It consists of several postulates about the nature of atoms and how they interact.
Understand that Dalton's Atomic Theory includes the idea that atoms are indivisible and indestructible particles, which means they cannot be broken down into smaller parts.
Recognize that Dalton's theory also states that atoms of a given element are identical in mass and properties, and that atoms of different elements can combine in simple, whole number ratios to form compounds.
Identify the statement 'Atoms are composed of protons, neutrons, and electrons' as inconsistent with Dalton's original theory. This is because Dalton's theory did not account for subatomic particles, which were discovered later.
Conclude that the statement about atoms being composed of protons, neutrons, and electrons is not a component of Dalton's Atomic Theory, as it reflects a more modern understanding of atomic structure.
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