Horizontal line
* X-axis: Temperature (°C)
* Y-axis: Time (minutes or any time unit)
Explanation:
* Melting Point: Naphthalene has a specific melting point, around 80°C. At this temperature, the solid naphthalene will start to melt and turn into a liquid. This transition happens at a constant temperature.
* Freezing Point: The freezing point of naphthalene is the same as its melting point – 80°C. When liquid naphthalene cools down to this temperature, it will begin to solidify, again at a constant temperature.
On the graph:
* You would see a horizontal line at 80°C.
* The line would start at the point where the naphthalene reaches its melting point.
* The line would continue horizontally until the entire sample of naphthalene is melted (for melting) or solidified (for freezing).
Important Note:
* The graph will show the temperature remaining constant during the phase change (melting or freezing). The temperature will only start to change again once the phase change is complete (all solid is melted, or all liquid is frozen).
Let me know if you'd like me to provide a visual representation of this graph!
