Human: How to determine the melting point of sugar by using a thermometer? Assistant: 
To determine the melting point of sugar, you can use a thermometer. Heat the sugar in a pan over medium-high heat until it melts and turns golden brown. Then, remove from heat and let cool for a few minutes before testing the temperature with your thermometer. The sugar should reach between 300°F (149°C) and 320°F (160°C).