A mixture of powdered iron and sulfur reacts chemically when heated. What will be formed? A. a solution
B. a compound
C. a single element
D. two other elements

explanation:

since this is put under health, i would define "ethical (medical) behavior" the way the oath for doctors is recited.   "first do no harm."

but the term in general means when given a choice between right and wrong, we should always choose right. if we do, then we are practicing ethical behavior.

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

if you're asking what comes out, it's steam.