Which of the following was originally a tenet of Dalton's atomic theory, but had to be revised about a century ago?
Atoms of the same element are identical.
Atoms are tiny indivisible particles.
Compounds are made by combining atoms.
Atoms of different elements can combine with one another in simple whole number ratios.
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Give one example of a pure (exact) number and of an estimated (measured) number.
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Which of the following was originally a tenet of Dalton's atomic theory, but had to be revised about...
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