Transcription: The process of combustion provides another example of how the conclusions of science must always be tentative. In the late 1600s, scientists thought they had combustion figured out. They thought that anything that could burn had a substance called phlogiston in it. The process of combustion used up this phlogiston and when the phlogiston was completely gone, the substance stopped burning. This view was supported by experiments that showed that when something burned, it got used up. We now know, however, that this explanation is wrong. In fact, combustion is a chemical reaction with oxygen, whe ...
(.mp4)