Which action would you use to determine the melting point of a substance? (1)

Question

O increasing its temperature until it transitions from a liquid to a gas
O decreasing its temperature until it transitions from a gas to a liquid
O increasing its temperature until it transitions from a solid to a liquid
decreasing its temperature until it transitions from a solid to a liquid

Answer 1

To determine the melting point of a substance, you would use the action:

O increasing its temperature until it transitions from a solid to a liquid.

The melting point is defined as the temperature at which a solid turns into a liquid.