- Hydrogen is a kind of element
- Oxygen is a kind of element
- Therefore, hydrogen and oxygen are different elements

- Hydrogen and oxygen are different elements
- An element is a kind of substance
- Therefore, hydrogen and oxygen are different substances

- Hydrogen and oxygen are different substances
- Water is a kind of substance
- Hence, hydrogen, oxygen, and water are different substances

- Electrical energy is added to water
- Hydrogen is produced when electrical energy is added to water
- Therefore, electrical energy causes hydrogen to form from water

- Oxygen is produced when electrical energy is added to water
- Electrical energy is added to water
- Therefore, electrical energy causes oxygen to form from water

- Electrical energy causes hydrogen to form from water
- Electrical energy causes oxygen to form from water
- So, electrical energy causes hydrogen and oxygen to form from water

- Hydrogen, oxygen, and water are different substances
- Electrical energy causes hydrogen and oxygen to form from water
- Hence, electrical energy causes different substances to form from water

- Electrical energy causes different substances to form from water
- Chemical changes cause different substances to form
- Therefore, electrical energy causes chemical change to the water

Therefore, electrical energy causes chemical change to the water
Q: An electrical circuit can be used to break down water into hydrogen and oxygen. In this process, electrical energy produces
Context:
- Oxygen is produced when electrical energy is added to water 
- Water is a kind of substance 
- Electrical energy is added to water 
- An element is a kind of substance 
- Chemical changes cause different substances to form 
- Hydrogen is produced when electrical energy is added to water 
- Hydrogen is a kind of element 
- Oxygen is a kind of element