At 25°C gallium is a solid with a density of 5.91 g/cm³ and a melting point, 29.8°C, just slightly above room temperature. The density of liquid gallium just above the melting point is 6.1 g/cm³. Based on this information, what unusual feature would you expect to find in the phase diagram of gallium?

Video transcript

Hi everyone to we have hypothetical substance that has a melting point of 32.7 degrees Celsius and extensively as a solid at 30 degrees Celsius is 7.31 g per centimeter cube and its density as a liquid at 32.9 degrees Celsius is 8.92 g per centimeter cubed. Or ask Which statement is true. So the solid density is less than the liquid density, but typically the density of a solid is greater than the density of its liquid. So this substance is atypical. Its solid state is denser or more compact than the liquid, so thus a backward sloping solid. Look at line can be seen on its face diagram like that of water. The answer is going to be a thanks for watching my video and I hope it was helpful.