Arrhenius theory is a theory about acids and bases. It says that acids are those substances that produces hydrogen ions (H+) when in solution and bases are the substances that dissiociates and produces hydroxide ions (OH-). It was introduced by Svante Arrhenius.
Flammability is a chemical change because when you burn something, it no longer has the same properties.
No, because humans are much more complex than peas.
