Chapter 4, Problem 31A

Whose work is credited with being the beginning of modern atomic theory?

Interpretation Introduction

Interpretation:

Name of the scientist whose work is credited with being the beginning of modern atomic theory needs to be determined.

Concept introduction:

Any substance that has mass and occupies space by having a fixed volume is matter. Everything that exists is a matter for example, table, chair, coins, etc.

Answer to Problem 31A

Work of John Dalton was the beginning of modern atomic theory.

Explanation of Solution

John Dalton’s work is credited with being the beginning of modern atomic theory.

Dalton’s theory of atoms states that:

• Atom is the smallest component of the substance that binds together to form matter.

• Atom can neither be created nor be destroyed into further parts.

• All the atoms of the same elements have the same size, mass and chemical properties.

• Two elements have different types of atoms present in them.

• Chemical reactions cause atoms to separate from each other or to combine.

Conclusion

Hence, John Dalton’s work is credited with being the beginning of modern atomic theory.