Does plastic have high heat capacity?

No, plastic generally does not have a high heat capacity. Heat capacity is a measure of the amount of heat required to raise the temperature of a material by one degree Celsius. Materials with high heat capacities, such as water, require a significant amount of heat to increase their temperature. Plastics, on the other hand, typically have lower heat capacities compared to water and other common materials. This means that plastics require less heat to experience a change in temperature.