Which of the following statements regarding atoms and atomic theory is incorrect?
A) "Atomos" is a Greek word meaning unbreakable.
B) Democritus, a Greek philosopher, believed that matter could be broken down into infinitely small pieces.
C) The ancient Greeks believed that all matter is made of four elements: earth, air, fire, and water.
D) An element is a substance that cannot be broken down into simpler substances.
E) By the 1700s, all chemists believed that elements were made of atoms.
Correct Answer:
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Q4: Which of the following were defined as
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
Q10: 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
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