Answer:
1. Melting
2. Boiling
Step-by-step explanation:
Carbon monoxide (CO) undergoes phase transitions as its temperature changes. Here are the key phase transitions of carbon monoxide:
: The melting point of carbon monoxide is -205.02 degrees Celsius (-337.04 degrees Fahrenheit). Below this temperature, carbon monoxide exists as a solid. As the temperature rises and reaches the melting point, the solid CO begins to transition into a liquid state.
2. Boiling: The boiling point of carbon monoxide is -191.5 degrees Celsius (-312.7 degrees Fahrenheit). As the temperature continues to increase beyond the melting point, the liquid CO transitions into a gaseous state through the process of boiling.
It's important to note that carbon monoxide is typically encountered as a gas at room temperature and atmospheric pressure. The solid and liquid phases of carbon monoxide are less common and require extreme temperatures to occur.
In summary, carbon monoxide undergoes a phase transition from solid to liquid (melting) at -205.02 degrees Celsius and from liquid to gas (boiling) at -191.5 degrees Celsius.