History of the atomic model

Front

Who proposed the idea of atoms as indivisible particles?

Back

Democritus

Front

What is the term for elements in the same group having similar characteristics?

Back

Properties

Front

Who was the first scientist to discover the electron?

Back

John Dalton

Front

What model did Niels Bohr propose regarding electron movement?

Back

Electrons move around the nucleus in fixed circular orbits.

Front

What is the significance of the atomic model in chemistry?

Back

It helps explain the structure of atoms and the behavior of elements.

Front

What did John Dalton contribute to the atomic theory?

Back

He proposed that matter is made up of atoms, which are indivisible and indestructible.

Front

What is the main idea of Bohr's model of the atom?

Back

Electrons orbit the nucleus at specific distances and energy levels.

Front

What did the discovery of the electron change about the atomic model?

Back

It introduced the concept of subatomic particles and challenged the idea of indivisible atoms.

Front

How do the properties of elements in the same group compare to those in different groups?

Back

Elements in the same group have similar chemical and physical properties.

Front

What is the role of energy levels in Bohr's atomic model?

Back

Electrons occupy specific energy levels, which determine their distance from the nucleus.