Based on the stimuli given, you could make the following observations based on thermoreceptors:
1. The ice cream is cold: This observation is related to the temperature of the ice cream, which would be sensed by thermoreceptors in your skin or mouth as a decrease in temperature.
You cannot make the following observations based on thermoreceptors:
2. The ice cream is white: The color of the ice cream is a visual observation and cannot be sensed by thermoreceptors.
3. The ice cream is heavy: The weight of the ice cream is a proprioceptive observation, which is detected by sensors in muscles, joints, and tendons, rather than thermoreceptors.
4. The ice cream is sweet: The sweetness of the ice cream is a gustatory (taste) observation, which is perceived by taste buds and not by thermoreceptors.