Key Concept
1. A controlled experiment is when you have some of whatever you're studying that you don't change, so you can compare the results to what you DO change. Which is what he did with the meat.
2. A theory is something you have tested over and over multiple times. A hypothesis is something that you don't need to test, its just something to start with.
3. Usually they do experiments and publish their finding in some sort of journal for scientists.
4. He put a piece of meat in the flask and covered it with mesh to see if flies grew from inside the meat and another flask and he noticed that flies planted there eggs on top of the meat and did not come from inside the meat like it came from no where.
Critical Thinking - Making Judgements
5. Pasteur became confused by the discovery of the chemist Eilhardt Mitscherlich. This guy had shown that tartrates and paratartrates behaved differently toward polarized light. Tartrates rotated the plane of polarized light, whereas paratartrates did not.
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