A physicist, biologist and a chemist were going to the ocean for the first time

The physicist saw the ocean and was fascinated by the waves. He said he wanted to do some research o n the fluid dynamics of the waves and walked into the ocean. Obviously he was drowned and never returned.

The biologist said he wanted to do research o n the flora and fauna inside the ocean and walked inside the ocean. He too, never returned.

The chemist waited for a long time and afterwards, wrote the observation, "The physicist and the biologist are soluble in ocean water

Teacher: What is the formula for water
Student: H, I, J, K, L, M, N, O
Teacher: That's not what I taught you.
Student: But you said the formula for water was...H to O.