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In GHS what is EXOTHERMIC and why is that knowledge key in Safety?

When teaching staff about GHS and the safety practices of the chemicals used plus proper PPE selection don’t forget to teach the chemical SAFETY features and dangers of that chemical.

An exothermic reaction is a chemical or physical reaction that releases heat. It gives out energy to its surroundings. The energy needed for the reaction to occur is less than the total energy released.   The absolute amount of energy in a chemical system is difficult to measure or calculate. The enthalpy change, ΔH, of a chemical reaction is much easier to work with. The enthalpy change equals the change in internal energy of the system plus the work needed to change the volume of the system against constant ambient pressure.

When trying to classify a process as exothermic or endothermic, watch how the temperature of the surroundings changes. An exothermic process releases heat, and causes the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.

An exothermic reaction is a chemical or physical reaction that releases heat. It gives out energy to its surroundings. The energy needed for the reaction to occur is less than the total energy released.  

Examples of exothermic reactions

·        Combustion reactions of fuels.

·        Neutralization.

·        Burning of a substance.

·        Deposition of dry ice (carbon dioxide) from the gaseous state.

·        Adding water to anhydrous copper(II) sulfate.

·        The thermite reaction.

·        Reactions taking place in a self-heating can based on lime aluminium.

When trying to classify a process as exothermic or endothermic, watch how the temperature of the surroundings changes. An exothermic process releases heat, and causes the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings. All chemical processes are accompanied by energy changes. When a reaction proceeds, it either releases energy to, or absorbs energy from, its surroundings. In thermodynamics, these two types of reactions are classified as exothermic or endothermic, respectively

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