Answer:
this reaction is an oxidation reaction
I disagree, because a physical change changes the form, and a chemical change is a process where one or more substances are altered into new substances.
Yes, there are vegetarian italian sausages. One example is the Satanic sausage, which is prepared from dough, beans, spices, tomato, yeast, etc. But, yes, majority or I would say almost all of the Italian sausages are non-vegetarian sausages itselves.
Mass number - # of protons = #neutrons, so I would say the answer is 5