When soldering, why should flux be used?

Name: When soldering, why should flux be used?
Brand: Quizplus
Rating: 4.8 (45 reviews)

Question

Quizplus · Accepted Answer

Flux helps prevent oxidation by removing any oxides present on the metal surface, it also helps keep pipes clean by removing any dirt or debris that may be present on the metal surface. Additionally, flux helps solder flow easier by reducing the surface tension between the solder and metal surface, allowing the solder to flow into all the small crevices and joints. Therefore, all of the above are correct.

When Soldering, Why Should Flux Be Used