A student is trying to find the melting point of different salts. The student places each sample of salt in a thin tube. The student then heats each tube
Which is most important to record during this experiment?
O A. the time it takes for the salt to change from a liquid to a gas
O B. the time it takes for the salt to change from a solid to a liquid
O c. the temperature at which the salt changes from a liquid to a gas
O D. the temperature at which the salt changes from a solid to a liquid