Chapter 4, Problem 61A

Interpretation Introduction

Interpretation : The parts of Dalton’s atomic theory no longer agree with the current picture of the atom.

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 61A

There is only one kind of atom that make up an element and the atoms are identical when it comes to the same elements are the parts of Dalton’s atomic theory that no longer agree with the current picture of the atom.

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.