What types of gases are compounds that can disassociate and recombine under certain conditions?

What types of gases are compounds that can disassociate and recombine under certain conditions?

• A. Reactive gases
• B. Noble gases
• C. Inert gases
• D. Corrosive gases

Answer: (A)

Gases that can break apart into reactive fragments at welding temperatures and then recombine to form new compounds are reactive gases. This ability to disassociate into atoms or radicals and later recombine means they actively participate in chemical reactions in the weld environment, which can alter the chemistry of the weld or the shielding layer. Noble or inert gases, by contrast, are chemically stable and don’t readily form compounds, so they don’t typically dissociate and recombine under normal conditions. Corrosive gases describe a harmful effect rather than the specific reactivity pattern described. So the type described is reactive gases.

Gases that can break apart into reactive fragments at welding temperatures and then recombine to form new compounds are reactive gases. This ability to disassociate into atoms or radicals and later recombine means they actively participate in chemical reactions in the weld environment, which can alter the chemistry of the weld or the shielding layer. Noble or inert gases, by contrast, are chemically stable and don’t readily form compounds, so they don’t typically dissociate and recombine under normal conditions. Corrosive gases describe a harmful effect rather than the specific reactivity pattern described. So the type described is reactive gases.