Name three chemical elements that are found in water.
1. Hydrogen
2. Oxygen
3. Chlorine (in small amounts in tap water as a disinfectant)
Complete the following task based on the instruction and optional input provided.### Instruction:
Name three chemical elements that are found in water.

### Output:
1. Hydrogen
2. Oxygen
3. Chlorine (in small amounts in tap water as a disinfectant)