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Questions and Answers
According to Dalton's Atomic Theory, what are atoms of an element like?
According to Dalton's Atomic Theory, what are atoms of an element like?
- Differ in size, mass, and other properties
- Identical in size, mass, and other properties (correct)
- Combine in whole-number ratios to form compounds
- Can be subdivided, created, or destroyed
How do atoms of different elements differ according to Modern Atomic Theory?
How do atoms of different elements differ according to Modern Atomic Theory?
- They can be subdivided
- They differ in mass only
- They have different chemical properties (correct)
- They are not composed of atoms
Which statement aligns with Dalton's Atomic Theory?
Which statement aligns with Dalton's Atomic Theory?
- Atoms have different chemical properties
- Atoms have unique average masses for each element
- Atoms cannot be subdivided, created, or destroyed (correct)
- Atoms combine in ratios to form compounds
What distinguishes the behavior of atoms in ordinary chemical reactions according to Modern Atomic Theory?
What distinguishes the behavior of atoms in ordinary chemical reactions according to Modern Atomic Theory?
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In which theory do atoms of the same element have the same chemical properties?
In which theory do atoms of the same element have the same chemical properties?
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What aspect of atoms is unique to each element according to Modern Atomic Theory?
What aspect of atoms is unique to each element according to Modern Atomic Theory?
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Study Notes
Dalton's Atomic Theory
- Atoms of an element are identical and indestructible, meaning they cannot be created, destroyed, or changed into atoms of a different element.
- Atoms of different elements have different masses and properties.
Modern Atomic Theory
- Atoms of different elements differ in their atomic number, which is the number of protons in an atom's nucleus.
- Atoms of the same element have the same atomic number and chemical properties.
- In ordinary chemical reactions, atoms do not gain or lose protons, meaning their atomic number remains the same.
- The unique aspect of atoms that distinguishes one element from another is their atomic number or the number of protons in an atom's nucleus.
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