Chemistry ( Quantum Theory and the Atom ) lesson 1

Front

What happens when a photon collides with an electron?

Back

The electron will move to a higher energy level, and its position will change, making it impossible to determine both velocity and position at the same time.

Front

What is the Balmer series of spectral lines?

Back

The Balmer series of spectral lines are formed in the visible region of the electromagnetic spectrum.

Front

What is an example of Bohr’s model?

Back

The hydrogen atom is a classic example of Bohr's model, where electrons orbit the nucleus in defined energy levels.

Front

Define Bohr’s atomic model.

Back

Bohr’s model correctly predicted the frequencies of the lines in the hydrogen atomic emission spectrum.

Front

Why do we need Bohr’s model?

Back

To understand the relationship among atomic structures.

Front

What is a photon?

Back

A photon is a quantum of electromagnetic radiation, which carries energy and momentum.

Front

What is the principle of uncertainty in quantum mechanics?

Back

The principle of uncertainty states that it is impossible to simultaneously know both the position and momentum of a particle with absolute precision.

Front

What is an energy level in an atom?

Back

An energy level is a specific region around the nucleus of an atom where electrons are likely to be found.

Front

What is the significance of the hydrogen emission spectrum?

Back

The hydrogen emission spectrum provides evidence for quantized energy levels in atoms.

Front

What does it mean for an electron to be in an excited state?

Back

An excited state occurs when an electron absorbs energy and moves to a higher energy level.