Question

question 2
what happens to the electrons in the atoms of chemical compounds when heated?
1 they become invisible and disappear
2 they become stable and remain in the same energy level
3 they become relaxed and move to lower energy levels
4 they become excited and jump to higher energy levels

Explanation:

When atoms in chemical compounds are heated, they absorb thermal energy. This energy is transferred to the electrons, causing them to gain energy and move from their normal, lower energy state to higher, less stable energy levels; this state is called being 'excited'.

Answer:

1. They become 'excited' and jump to higher energy levels