END-OF-CHAPTER QUESTIONS
Completion requirements
- Define hydrogen as a chemical element, its chemical symbol and its protonic number.
- How many isotopes are there in hydrogen, and what are they called?
- At what temperature does hydrogen become liquid?
- In what year has Henry Cavendish discovered hydrogen
- Which French chemist named hydrogen?
- What colours are used to label hydrogen, and which are acquired from fossil fuels?
- Describe the process during which green hydrogen is made.