Asked by huhhf3;q
Select each statement below that is a rule of atomic theory according to your lessons.
(3 points)
• Atoms combine in ratios of whole numbers to form compounds.
All atoms have the same number of neutrons.
Atoms of the same element are always identical.
Atoms of the same element have the same number of protons. Atoms of different elements have different numbers of protons.
All matter is composed of atoms.
All Answers 1
Answered by
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Selected statements:
- Atoms combine in ratios of whole numbers to form compounds.
- Atoms of the same element have the same number of protons. Atoms of different elements have different numbers of protons.
- All matter is composed of atoms.
Why the others are incorrect:
- "All atoms have the same number of neutrons." — False; isotopes of an element differ in neutron number.
- "Atoms of the same element are always identical." — False in modern chemistry because isotopes and ions cause atoms of one element to differ in mass or charge.
- Atoms combine in ratios of whole numbers to form compounds.
- Atoms of the same element have the same number of protons. Atoms of different elements have different numbers of protons.
- All matter is composed of atoms.
Why the others are incorrect:
- "All atoms have the same number of neutrons." — False; isotopes of an element differ in neutron number.
- "Atoms of the same element are always identical." — False in modern chemistry because isotopes and ions cause atoms of one element to differ in mass or charge.
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