Photochemistry is a branch of chemistry that studies the chemical effects of light. It focuses on the interactions between light and matter, specifically how light (typically ultraviolet, visible, or infrared radiation) can induce chemical reactions or cause changes in the properties of substances. Key aspects of photochemistry include: 1. **Mechanisms of Light Absorption**: When molecules absorb photons (light particles), they can reach an excited state, leading to various chemical reactions.
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