Yes, a microwave oven can heat food and liquids above 212°F (100°C). The boiling point of water is 212°F (100°C) at standard atmospheric pressure. However, microwaves can heat food and liquids beyond the boiling point because they work by exciting water molecules through electromagnetic waves.
Microwave ovens emit electromagnetic waves at a frequency that matches the natural resonance of water molecules. When these waves pass through food or liquids, they cause the water molecules to vibrate and generate heat. As the water molecules continue to absorb energy, the temperature of the food or liquid increases.
The actual temperature reached in the microwave depends on several factors, including the wattage of the microwave, the quantity and composition of the food, and the time of heating. It is essential to be cautious when removing items from the microwave, as the containers and contents may be much hotter than 212°F (100°C). Always use appropriate oven mitts or protective gear to avoid burns.