The video shows a close-up of a Bunsen burner with a flame burning a test tube. The flame is bright orange and yellow, and the test tube is filled with a dark liquid. As the flame burns, the liquid inside the test tube begins to emit a thick, white smoke that rises and curls upwards. The smoke is dense and billowy, and it continues to rise until it dissipates into the air. The background is a dark, solid color, providing a stark contrast to the bright flame and white smoke.