Question

6. Many changes have been made to atomic theory since Daltons time.
A. List the key difference between modern atomic theory and dalton's atomic
theory
B. What important aspect of scientific theories is illustrated by these differences

Answer 1

Answer:

A. Modern atomic theory is, of course, a little more involved than Dalton's theory but the essence of Dalton's theory remains valid. ... Also, there are different kinds of atoms (differing by their masses) within an element that are known as "isotopes", but isotopes of an element have the same chemical properties.

B. The explanation becomes a scientific theory. In everyday language a theory means a hunch or speculation. Not so in science. In science, the word theory refers to a comprehensive explanation of an important feature of nature supported by facts gathered over time.