The video shows a diagram of the chemical reaction between oxygen and hydrogen. The oxygen atom is shown as a green sphere with the word "Oxygen" written on it, while the hydrogen atom is shown as a red sphere with the word "Hydrogen" written on it. The reaction is represented by two metal rods connecting the two atoms, indicating the transfer of electrons. The background is a brownish color, and the word "Iodine" is visible, suggesting that iodine may be involved in the reaction.