Once you ______________ the gas with an electrical current you get what is known as a ______________ arc. 2. Plasma is considered the ___________ state of matter. 3. Many useable _____________ with this process are: nitrogen, argon, helium most of your ______________ shielding gases that are on the market today. 4. However, most people today use __________________ air. Compressed air is readily _________________ in most shop applications. 5. The ____________ associated with using nitrogen, argon and helium can sometimes play a role in whether or not a company _______________ to use them verses __________________ air. 6. The advantage to using a __________________ gas in a cylinder form in the field or on the job site is you may not have availability to a __________________________ that can plug into a _________________, so you may not have compressed air readily available. 7. ________________ is a common gas used in portable applications when you are on a job site and you can not use __________________ air or you do not have compressed air readily available. Equipment 1. This is a plasma arc torch, this is a ____________ torch, as you can see this is a very _______________ design. 2. There is a trigger and on this trigger it has a ______________________. For you to start or ________________ the arc you literally have to pull this ______________ down and then in to pull the trigger down. 3. The first piece is the ______________. It _______________ off and needs to seat up