A-LevelChemistryAtomic structure9701/12 · Oct/Nov 2012 · Q91 Mark
John Dalton's atomic theory, published in 1808, contained four predictions about atoms. Which of his predictions is still considered to be correct?
AAll atoms are very small in size.
BAll the atoms of a particular element have the same mass.
CAll the atoms of one element are different in mass from all the atoms of other elements.
DNo atom can be split into simpler parts.
✓ Correct answer
A: All atoms are very small in size.
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