Paracelsus stated, “All substances are poisons; there is none which is not a poison.” What does this mean? Name a substance you would think would never be considered a poison.

Anything can effect you in some way doesn't matter what it is. A substance that wouldn't be considered poisinous is milk maybe. i really dont know

Explanation:

enzyme speed up the reactions

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.