Here is a concise summary of the provided transcript:
**Title:** Dry Ice Experiment with 500kg
**Summary:**
* The host celebrates reaching 3 million subscribers with an experiment using over 500kg of dry ice.
* They explain the science behind dry ice (carbon dioxide in solid state, -60°C, sublimation) and its effects when thrown into water (creating fog).
* The team disperses the dry ice into a swimming pool using shovels and a swing, creating a dense smoke-like effect that reduces visibility.
* They observe and react to the extreme fog, noting the lack of oxygen, cold temperatures, and a "sour" smell.
* After the fog dissipates, they find regular ice formed around the pool area due to the dry ice's freezing effect on the water.
* The host reflects on the experiment's success, noting the unexpected intensity of the effect and the physical sensations of breathing in the carbon dioxide.
Here are the key facts extracted from the text, numbered and in short sentences:
**Experiment Details**
1. The experiment involves over 500kg of dry ice.
2. The exact weight is approximately 420kg, but more was obtained.
3. One box of dry ice weighs over 100kg.
**Dry Ice Properties**
4. Dry ice is carbon dioxide in a solid state.
5. Normally, carbon dioxide is in a gas state in the air.
6. Dry ice appears like regular ice but is -60°C.
7. When dry ice is thrown into water, it rapidly turns into a gas state.
8. This rapid change creates fog.
9. Dry ice undergoes a process called sublimation, changing from solid to gas state continuously.
10. To prevent sublimation, everything is kept airtight.
**Safety and Precautions**
11. Direct contact with dry ice can cause burns.
12. Shovels are used to handle dry ice to avoid burning hands.
13. The dense smoke from dry ice can reduce oxygen levels, causing breathing difficulties.
**Environment and Weather**
14. The experiment took place in weather that was around 8°C.
15. It was noted that warmer days were unlikely to return, making outdoor experiments like this timely.
**YouTube Channel Milestones**
16. The creator had just reached 3 million subscribers.
17. There is a YouTube button for reaching 10 million subscribers, which the creator aspires to.
**Miscellaneous**
18. The experiment's setup included a swimming pool.
19. A big swing was used to spread the dry ice over the swimming pool.
20. The creator finished technical high school with a focus on chemistry.