use words and phrases from the word list to complete the sentences. (a) if energy is not transferred by heat to a gas during expansion, the pressure . (b) when energy is transferred by heat to a gas but the volume doesn't change, the pressure increases . (c) when a gas expands at constant temperature, the energy transferred by heat equals the work done by the system. (d) when a gas goes through an isothermal process, the internal energy remains the same . word/phrase list: is greater than; is less than; equals; increases; decreases; remains the same