Chemicals: sodium hydroxide, potassium peroxidisíran, carbon dioxide from the extinguisher
Procedure: on the white paper to build two 400 ml beakers and in the middle of them at a distance of 20 cm is placed 100 W bulb. The temperature inside the beaker measure the best non contact thermometer (Raytek example). In one beaker sprayed solid carbon dioxide, the temperature inside the freezing point of water. This beaker was poured 100 ml of 10% sodium hydroxide solution with 2 g of potassium peroxodisulfate
cooled to 20 ° C. When measuring the temperature inside the beaker after 2 minutes we find that the temperature inside the empty beaker is lower than in the beaker with carbon dioxide, which demonstrates the greenhouse effect.