Answer:
no but that is what we were taught
Answer:
During the pumping of hot air into the expansion valve.
THE ANSWER IS B SORRY FOR THE CAPS(:
Metals usually become cations since electrons are negatively charged and when they are lost there are more protons than electrons making a positive net charge in the atom. (cations are positively charged ions while anions are negatively charged ions)
I hope this helps. Let me know if anything is unclear.