Title: Chemical Energy Storage

Q: Which of the following are forms of chemical energy storage?
- Wood (correct)
- Batteries
- Coal (correct)
- Natural Gas (correct)
- All of the above

Q: Chemical energy storage is particularly suitable for long-term energy storage.
A: true

Hydrogen Energy Storage - Fill in the Blanks

Fill in the missing words

Q: Most commonly, hydrogen can be produced from [...]. In this process, water is decomposed into [...] and hydrogen gas.

Hydrogen can be stored as a [...] or as a [...], the latter having a higher energy density. Moreover, gas storage requires [...] of around 350-700 bars wheras liquid storage requires [...] due to the low boiling point of hydrogen.
A: water electrolysis; oxygen; gas; liquid; high pressures; low temperatures

Q: Why can the additional processing of hydrogen be advantageous?
- Hydrogen storage requires many storage constraints (i.e. in high pressures or low temperatures). Hydrocarbons on the other hand, already have storage and transport systems in place. (correct)
- It is much more cost effective and efficient.
- Hydrocarbons are better for the environment.