Chapter 4, Problem 65A

Interpretation Introduction

Interpretation : Dalton’s atomic theory was not correct so it should be criticism of Dalton as a scientist to be explained.

Concept Introduction : John Dalton was the first to make the modern atomic discovery.

Dalton used experimental methods to transform Democritus' ideas on atoms into a scientific theory.

Answer to Problem 65A

Dalton should not be criticized for his incorrect theory. This is because there was very little technology during his time.

Explanation of Solution

John Dalton was the first to make the modern atomic discovery.

Dalton used experimental methods to transform Democritus' ideas on atoms into a scientific theory.

He researched the ratios at which the elements combine during chemical reactions.

Dalton developed theories and hypotheses to explain his observations.

Dalton's atomic theory is the name given to the outcome of his research.

According to Dalton, there is only one kind of atom that makes up an element.

But in the current picture, atoms are made up of subatomic particles (protons, neutrons, and electrons).

According to Dalton, atoms are identical when it comes to the same element.

But in the current picture, atoms have isotopes so the atoms are not identical in such cases.

Though two postulates of Dalton’s atomic theory were not correct.

He should not be criticized. Because in his time there was less technology. But now many technologies give accurate results.