Self-reacting solids are described as?

Self-reacting solids are described as?

• A. Solids that require oxygen to ignite.
• B. Thermally unstable and may undergo a strongly exothermic decomposition without participation of oxygen.
• C. Solids that react only with water.
• D. Solids that do not react at all.

Answer: (D)

Self-reacting solids are materials that can undergo a chemical reaction on their own, driven by internal heat, even without an external oxidizer like air. They are thermally unstable and may decompose in a strongly exothermic way, and this decomposition can proceed without participation of oxygen. So describing them as solids that do not react at all would miss their defining hazard—the potential for self-sustained, energetic reaction. The other ideas, such as needing oxygen to ignite or reacting only with water, don’t capture the danger profile of self-reacting solids, which is their tendency to react energetically without external oxidizers.

Self-reacting solids are materials that can undergo a chemical reaction on their own, driven by internal heat, even without an external oxidizer like air. They are thermally unstable and may decompose in a strongly exothermic way, and this decomposition can proceed without participation of oxygen. So describing them as solids that do not react at all would miss their defining hazard—the potential for self-sustained, energetic reaction. The other ideas, such as needing oxygen to ignite or reacting only with water, don’t capture the danger profile of self-reacting solids, which is their tendency to react energetically without external oxidizers.