Modern Atomic Theory Flashcard 1

Front

What causes the phenomena of colors?

Back

The phenomena of colors is caused by the absorption and emission of light energy by electrons as they move away and towards the nucleus.

Front

What property of the electron is used to model the atom in modern atomic theory?

Back

The electron is a particle that can behave as a wave.

Front

Which part of the atom is responsible for absorbing or releasing energy in spectrum tube gases?

Back

Electron.

Front

Define the modern atomic theory.

Back

The modern atomic theory states that atoms are composed of subatomic particles (protons, neutrons, and electrons) and that electrons exhibit both particle and wave-like properties.

Front

What is the role of electrons in chemical bonding?

Back

Electrons, particularly valence electrons, are involved in forming chemical bonds between atoms.

Front

Explain the concept of quantized energy levels in atoms.

Back

Electrons in an atom exist in specific energy levels, and they can only gain or lose energy in discrete amounts when transitioning between these levels.

Front

What is the significance of the wave-particle duality of electrons?

Back

Wave-particle duality explains that electrons exhibit properties of both particles and waves, which is fundamental to understanding atomic structure and behavior.

Front

What is an atomic orbital?

Back

An atomic orbital is a region in an atom where there is a high probability of finding an electron.

Front

Describe the difference between an electron and a proton.

Back

Electrons are negatively charged subatomic particles, while protons are positively charged and found in the nucleus of an atom.

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 exact position and momentum of an electron.