Question

_____ energy is used to split the compounds into simpler substances in thermal decomposition.

1 Electric current
2 Sunlight
3 Heat
4 Water​

Answer 1

heat energy is used to split the compounds into simpler substances in thermal decomposition.

hope it will help

Answer 2

3) Heat

Explanation:

• Thermal decomposition is a process in which complex or large substances are split into simple or smaller substances by heat.