Abstract: With the continued implementation of national “Double Carbon” strategies, carbon dioxide (CO₂) has emerged as a focal point of attention. However, a comprehensive and in-depth understanding of CO₂ cycling and carbon emission reduction is lacking among the general public. This experiment introduces a set of carbon cycle experiments covering the properties, generation, transformation, and capture of CO₂. It simulates natural and industrial carbon sequestration processes through processes like photosynthesis and chemical absorption, achieving carbon emission reduction and carbon neutrality. The dynamic changes in CO₂ are demonstrated through various forms such as color changes in indicators, fountains, and precipitation. Raw materials for the experiment are sourced from daily life, ensuring simplicity in operation. The experiment incorporates diverse interactive elements, enhancing its appeal and effectively conveying the chemical principles of the carbon cycle. It serves to popularize knowledge related to the “Double Carbon” strategy, fostering a deep-seated understanding of low-carbon energy-saving concepts.

Key words: Carbon cycle, Photosynthesis, Carbon capture, Colorful indicator, Fountain experiment