Question

Which of the following are examples of chemical energy being released or stored?

I A car battery reacting and releasing energy
II A girl eating a sandwich which helps her move
III Propane burning on a barbecue
I only
I, II, and III
I and III only
I and II only

Answer 1

All of them are examples of chemical energy being released or stored.

Answer 2

Answer:

I, II, and III

Explanation:

A car battery has chemical energy inside it so then it uses it and turns it into mechanical energy. The girl eating the sandwich also uses chemical energy, which also turns the energy into mechanical energy. And the propane is burned and turned into a new substance, which is evidence of chemical energy.