Question 1
Which of the following is a part of Dalton's atomic theory?
◦ Atoms contain protons, neutrons, and electrons.
◦ Atoms break down during radioactive decay.
◦ Atoms are rearranged but not changed during a chemical reaction.
◦ Isotopes of the same element have different masses.
Question 2
Which of the following is
not explained by Dalton's atomic theory?
◦ conservation of mass during a chemical reaction
◦ the law of definite proportions
◦ the existence of more than one isotope of an element
◦ the law of multiple proportions