Question

sulfar has a melting point of 215 oc. this means that if sulfar has a temperature of 215 oc, what phase(s) of matter can it be in?
both solid and liquid
only liquid
only solid
only gas
both solid, liquid and gas

Explanation:

Step1: Recall the concept of melting point

The melting point is the temperature at which a solid turns into a liquid. At the melting point, both solid and liquid states co - exist.

Step2: Analyze the given temperature

Since the temperature is equal to the melting point ($215^{\circ}C$), sulfur is in the process of melting. So, it exists as both solid and liquid.

Answer:

Both Solid and Liquid