Answer:
1. emission spectrum
2. excited state
3. energy level
4. quantum
Explanation:
1. The distribution of light when passed through a prism or other device that breaks the light into its individual components is referred to as emission spectrum.
2. The state where one or more electrons is in a higher energy level than ground state due to the addition of energy, often in the form of heat or light is referred to as excited state.
3. The regions located around the nucleus where the electrons are found is referred to as energy level.
4. The energy available or given off in specific quantities is referred to as quantum.