Final answer:The 12-letter word referring to the ability or power to transmit heat,electricity, or sound is 'Conductivity'. It is a property which permits the flow of energy and is high in materials like copper and silver and low in insulators like wood or rubber.Explanation:The 12-letter word for the ability or power to transmit heat, electricity, or sound isConductivity. Conductivity is a property of materials that allows them to permit thepassageof different types of energy. For example, metals like copper and silver have high conductivity, which means they are good at allowing heat or electricity to flow through them. In contrast,materialslike wood or rubber have low conductivity, making them goodinsulatorsthat prevent the passage of heat or electricity.Learn more about Conductivity here:brainly.com/question/35882137#SPJ6...

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