Polystyrene Cup Calorimeter with Lid

This polystyrene cup calorimeter is a lightweight tool designed for measuring heat changes during chemical reactions. It includes a secure lid with a hole for inserting a thermometer, allowing for precise temperature readings while minimizing heat loss and spillage. The calorimeter measures 3.75 inches tall with the lid in place (3.38 inches without), with a diameter of 3.5 inches, and weighs only 0.025 pounds. It is suitable for teaching thermodynamics, STEM projects, and chemistry experiments where students calculate heat energy from observed temperature changes.