2. There are many transparent dots on the orange epidermis, which are oil glands. It can secrete an aromatic hydrocarbon called limonene, which belongs to the category of organic solvents, and the smell of lemon and orange is its smell. The main materials of balloons are polymer organic compounds of latex and rubber. According to the principle of similar compatibility in chemistry, these two organic compounds will dissolve in each other when they come into contact. The aromatic hydrocarbon of limonene in peel juice is equivalent to solvent, while latex in balloon acts as solute. When the two meet, limonene dissolves the latex, which leads to the local thinning of the balloon surface, the original stress balance of the balloon is broken, and the pressure that the balloon can bear becomes smaller, thus causing an explosion.
3. Actually, it's not just oranges. Orange and lemon peel juice splashes on the surface of the balloon, and the balloon will explode. So if you avoid playing with balloons when eating this fruit, please don't try dangerous actions easily.