A prefix is a part of a etymology that modifies are word at the start of it: i.e. reconsider, involuntary, uncover.
A suffix is the same thing but it modifies the end of a word: i.e. walked, bigger, reversible.
De is a prefix meaning "down, away" or "denoting removal or reversal". In this case it is referring to demagnetizing something, or removing the magnetization.
Ize is a suffix meaning to "make or become". This is referring to an object becoming magnetized.
Hyperbole If don't know what it means its best to start of with what you do know Process if elimination. It's not a simile because it has no like or as. Its not Personification cause its not giving the object human features. And its not metaphor cause its not literally Applicable. I'm assuming. So that just leaves you with hyperbole.
The tone, or attitude, is the way the narrator is trying to get across to make you feel. They are trying to show how they are feeling without directly saying it.
