ionisation

Thân thiện

A scientist demonstrates ionisation using a high-voltage apparatus.

Definition

Ionisation (noun) 1. The process of ionizing; the formation of ions: This refers to the physical or chemical process by which an atom or molecule acquires a net electric charge by gaining or losing electrons, often due to the action of strong electric fields, heat, radiation, or chemical reactions. 2. The condition of being dissociated into ions: This describes the state of a substance (particularly a gas) after it has undergone ionization, where it consists of charged particles rather than neutral atoms or molecules.

Usage

• Ionisation is a scientific term primarily used in physics and chemistry.
• It describes both the of creating ions and the resulting of a material.
• It is often discussed in contexts involving plasmas, radiation, electrical discharges, and chemical analysis.

Examples

• The ionisation of air by a high-voltage spark creates a conductive path for electricity.
• Ultraviolet radiation from the sun causes the ionisation of atoms in the Earth's upper atmosphere, forming the ionosphere.
• The degree of ionisation in the plasma determines its electrical properties.
• Mass spectrometry relies on the ionisation of sample molecules for analysis.

Advanced Usage

• Ionisation energy: The minimum energy required to remove an electron from an atom or molecule in its gaseous state.
  • Helium has the highest first ionisation energy among the elements.
• Degree of ionisation: The proportion of neutral particles that have been converted into ions.
  • At very high temperatures, the gas achieves a high degree of ionisation.

Variants and Related Words

• Ionize (verb): To convert or be converted into ions.
  • The intense heat can ionize the gas.
• Ionized (adjective): Having been converted into ions.
  • An ionized gas is called a plasma.
• Ion (noun): An atom or molecule with a net electric charge.
• Deionisation (noun): The process of removing ions from a substance.

Synonyms

• Ionization (American English spelling)
• Dissociation (specifically into ions)

Related Phrases and Concepts

• Ionisation chamber: A device for detecting ionizing radiation by measuring the electrical charge produced by ionisation within a gas.
• Ionisation potential: Another term for ionisation energy.
• Photoionisation: Ionisation caused by absorption of photons (light or other electromagnetic radiation).
  • Photoionisation is the primary process by which the interstellar medium is ionized.

Học thuật

Noun

1. the process of ionizing; the formation of ions by separating atoms or molecules or radicals or by adding or subtracting electrons from atoms by strong electric fields in a gas
2. the condition of being dissociated into ions (as by heat or radiation or chemical reaction or electrical discharge)
   • the ionization of a gas

Từ đồng nghĩa

• ionization