Which of the following statements regarding atoms and atomic theory is incorrect?
A) Antoine Lavoisier discovered in the late 1700s that matter is not gained or lost in a chemical reaction.
B) Joseph Proust showed that when elements combine to form new substances, they do so in specific mass ratios.
C) According to the law of multiple proportions, when water forms, the mass ratio of hydrogen to oxygen is variable.
D) John Dalton's atomic theory disagreed with the ancient Greek philosophers' ideas about matter.
E) The Greek philosophers did not conduct experiments to support their ideas.
Correct Answer:
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Q5: In any neutral atom:
A)the number of electrons
Q6: An atom contains
A)as many neutrons as electrons.
B)as
Q7: Which of the following observations does not
Q8: Which of the following elements is not
Q9: Which of the following statements regarding atoms
Q11: Rutherford's scattering experiment demonstrated
A)the existence of protons.
B)the
Q12: Dalton's atomic theory consisted of all the
Q13: The atomic number of an element represents
A)the
Q14: Which of the following is not part
Q15: The figure shows a molecular-level diagram of
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